Crypto Expert Witness

₿ Ξ Ð

25+

Years of Real Experience in the Field

About Me

Aviran Vargas, Crypto Expert Witness

"I'm not here to read your documents and guess what happened. I know what happened because I've done it myself - hundreds of times."

Aviran Vargas is the Director of Operations & Infrastructure at EZ Blockchain, a Chicago-based cryptocurrency hosting company managing Bitcoin mining infrastructure across multiple U.S. facilities. He coordinates, organizes, and oversees all facility operations, existing infrastructure, and networks - personally responsible for implementing EZ Blockchain's SB3000 container deployments and driving BTC hashing uptime to well over 95%, with a sustained drive toward five-nines reliability.

If you need a cryptocurrency hosting expert witness - you've found one. Aviran doesn't theorize about Bitcoin mining from a textbook. He operates real ASIC facilities, manages live hashrate, reviews real hosting contracts, and signs off on real P&L - every single day. That daily operational reality is what separates his testimony from every other expert in the room: he has gone head-to-head against opposing witnesses armed with 30 certificates and multiple degrees, and won - because his real-world knowledge exposes the gap between academic theory and what actually happens on a mining floor. Judges, arbitrators, and juries understand the difference. So do the attorneys who hire him.

Recent Trial Outcome - March 2025

Esbrook P.C. Secures Complete Defense Verdict for EZ Blockchain - $15M Crypto Infiniti Dispute

Following a multi-day federal jury trial in Chicago involving over 100 exhibits and three cryptocurrency expert witnesses, the jury entered a unanimous verdict in favor of EZ Blockchain on all claims - including fraud, breach of four contracts, unjust enrichment, and constructive trust. Aviran served as one of EZB's cryptocurrency expert witnesses, providing real-world operational testimony that proved decisive.

Read Esbrook Press Release →

IDCA Data Center Standards Blockchain Fundamentals Excel 2019 Expert Bilingual EN / ES

What "Boots on the Ground" Actually Means

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Physically walked and managed mining facilities across multiple U.S. states

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Racked, cabled, and powered thousands of ASIC units with his own hands

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Managed facility alarms, outages, and emergency response in real time

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Reviewed and negotiated real hosting contracts with real mining clients

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Calculated actual P&L on live mining operations - not theoretical models

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Interfaced directly with utilities, contractors, hardware vendors, and ISPs

Typical Crypto Expert	Aviran Vargas
Works from reports and spreadsheets	Works on real life ASICs, Pools and Components
Academic or financial background	15+ years of physical data center operations
Knows the theory of hashrate	Manages live hashrate every single day
Has never touched an ASIC miner	Personally racked & cabled thousands of ASICs
Testifies what could have happened	Testifies what he has actually done
30 certificates, 3 degrees - and zero field time	Was on the floor this morning

What I Offer

Crypto Expert Witness Services

Whether you need an expert witness for litigation or an operational consultant for your mining business - real-world knowledge, delivered directly.

Case Evaluation & Strategy

Review of case materials with an initial technical assessment - what actually happened in the field and whether it aligns with industry-standard practice.

Expert Reports & Rebuttals

Full written expert reports analyzing operational performance, financial damages, uptime records, and hardware deployment practices. Rebuttal reports also available.

Site Inspections & Audits

On-site visits evaluating power, cooling, cabling, hardware state, maintenance logs, and security. Physical inspection is often the most powerful evidence in hosting disputes.

Crypto Expert Testimony - Deposition & Trial

6× retained, 4× testified. Experienced at explaining complex ASIC mining operations in plain language for judges, arbitrators, and juries.

Financial Loss Assessment

Calculation of actual financial losses based on real hashrate data, power rates, coin prices, and pool performance - not theoretical estimates.

Document & Contract Review

Technical review of hosting agreements, SLAs, and supplemental agreements. Identifies discrepancies between what was promised and what was actually delivered.

Facility Due Diligence

Pre-investment evaluation of a mining facility's real operational capability - power reliability, cooling design, physical security, and management quality.

Hosting Contract Review

Plain-language analysis identifying one-sided clauses, missing SLAs, ambiguous uptime definitions, and pricing structures that don't align with industry standard.

Deployment Planning

ASIC deployment logistics - power budgeting, rack layout, miner configuration, firmware, and monitoring setup. Avoid costly mistakes that come from inexperience at scale.

Decommissioning & Moves

Proper procedures for shutting down and relocating ASIC hardware - chain-of-custody, firmware backup, hardware protection, and verification protocols.

P&L & Profitability Modeling

Real-world mining profitability modeling based on hashprice, power costs, hardware efficiency, and hosting fees. Useful for investors, operators, and deal evaluators.

Operational SRE Consulting

Site reliability engineering for mining operations - alarm management, uptime KPIs, incident response protocols, and customer reporting frameworks.

Simple Process

How to Retain Me

Straightforward from first contact to engagement - most attorneys are on the phone with me within 48 hours of submitting their inquiry.

Step 01

📋

Submit Your Inquiry

Complete the contact form with a brief description of your case or project. Include any relevant deadlines. I respond within one business day - typically same day.

Step 02

📞

Initial Call & Conflict Check

We schedule a confidential call to discuss the matter. I conduct a conflict check at no charge to confirm I can serve your client. If I have a conflict, I will tell you immediately.

Step 03

✍️

Engagement Agreement Signed

Once both parties are satisfied, we execute a formal engagement letter outlining scope, rates, and expectations. Work begins immediately upon execution and receipt of retainer.

⚖️

Court-Qualified Expert Witness

Aviran has been formally qualified by courts and arbitration panels as an expert witness in cryptocurrency mining hosting operations, ASIC hardware deployment and management, and real-world financial loss assessment. He has been retained in matters before AAA arbitrators and has given sworn deposition testimony in federal proceedings. His opinions are grounded in current, active operational experience - not retrospective study.

6×

Qualified as Expert

4×

Testified

Depositions

Active Role - September 2025 to Present

Director of Operations & Infrastructure

EZ Blockchain · Chicago, IL · 60+ MW Portfolio

ezblockchain.net EZ Blockchain on LinkedIn

This is what separates Aviran from every other crypto expert witness - he is not retired from the industry, he isn't working in theory, he isn't living in spreadsheets, he is doing this every day and he has been for 5 years. He holds an active executive role at a real cryptocurrency hosting company, managing live infrastructure, real clients, real contracts, and real hashrate every single day. The knowledge he brings to testimony and consulting is current, operational, and impossible to fake.

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Multi-Site Operations

Directs day-to-day operations across multiple U.S. Bitcoin mining data centers. Responsible for all site supervisors, technicians, and support staff. Serves as final escalation point for every critical operational and client issue.

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Compliance & Security

Implemented SOC II Type 2-compliant cybersecurity frameworks across all sites, ensuring robust protection of client data and mining operations. Developed and enforces company-wide processes and procedures, reducing operational costs by up to 7%.

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Automated Monitoring

Spearheaded deployment of automated monitoring systems including DCIM, Foreman, and OptiFleet - minimizing downtime through real-time network and environmental oversight across the full portfolio.

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Financial Reporting

Oversees financial and operational reporting, delivering actionable metrics on expenses, profitability, and hash rate performance to executive leadership. Forecasts Bitcoin and energy market trends to guide strategic hardware investments.

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Vendor & Client Relations

Negotiates strategic contracts with ISPs, ASIC manufacturers (Bitmain, MicroBT), and energy providers. Conducts client audits and presents performance reports to enhance hosting customer retention and satisfaction.

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Cooling & Infrastructure

Optimizes cooling and airflow strategies through advanced studies - improving equipment longevity and hashing efficiency. Led infrastructure expansions including Smartbox SB3000 deployments and facility upgrades to meet growing demand.

Current Operational KPIs

Portfolio Capacity 60+ MW

BTC Hashing Uptime Target 95%+

Operational Cost Reduction Up to 7%

Compliance Framework SOC II Type 2

Monitoring Systems DCIM · Foreman · OptiFleet

ASIC Hardware Currently Under Management

Bitmain Antminer S21 Antminer S19 XP Antminer S19 Pro WhatsMiner M70 WhatsMiner M60 WhatsMiner M50 Smartbox SB3000 Alt Coin ASICs

Full deployment, operation, RMA, maintenance, and decommissioning lifecycle management.

In the Field - Real Sites, Real Work

EZ Blockchain ASIC mining facility - rows of live miners

EZB Facility - Live ASIC Miners Running

EZ Blockchain Smartbox - ASIC racks deployed inside container

Smartbox Container - ASIC Deployment

Inside Smartbox - Electrical Inspection

On-Site Network Review

ASIC hardware delivery - miners staged in shipping container

ASIC Hardware Delivery & Receiving

Onsite Electrical Testing

Site inspection - inside mining container

Field Site Inspection

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Career History

25+ Years Working the Floor

From pulling Cat5 cable at a startup repair shop to managing 60+ MW of Bitcoin mining infrastructure - every day built the hands-on expertise that defines Aviran's testimony and consulting today.

September 2025 - Present

Director of Operations & Infrastructure

EZ Blockchain · Chicago, IL

Directs strategic operations across multiple U.S. cryptocurrency mining data centers, achieving 95%+ hashing uptime and driving scalability for 60+ MW of capacity. Enforces company-wide processes and procedures; optimizes logistics and RMA workflows; implements SOC II Type 2-compliant cybersecurity frameworks. Deployed automated monitoring (DCIM, Foreman, OptiFleet). Negotiates vendor contracts with ISPs, ASIC manufacturers, and energy providers. Serves as final escalation point for all critical operational and client issues.

60+ MWSOC II Type 2DCIM / OptiFleetBitmain Antminer S21WhatsMiner M70Smartbox SB3000Airflow Studies

October 2021 - September 2025

Data Center Operations Manager - Operations & Site Reliability

EZ Blockchain · Chicago, IL

Implemented and validated the first SB3000 container deployments. Ensured redundant, secure network installation to Tier IV standards. Developed the complete Bitcoin Mining DC Manual. Drove BTC hashing uptime to 95%+, targeting five-nines. Created full metrics suite for expenses, profitability, BTC hash, and daily operational reports. Managed ASIC mining equipment, network infrastructure, and staff. Conducted airflow management studies and improvements for more efficient ASIC cooling and hashing. Grew company revenue through operational excellence and streamlined processes.

Antminer S19 / S19 Pro / S19 XPWhatsMiner M30S / M50 / M60Tier IV StandardsBitcoin Mining ManualCisco MerakiWhite-Box Server Builds

June 2011 - October 2021

Lead Engineer (Engineer III) → Site Manager

Comcast Data Center Services · Northlake, IL

Started as Lead Engineer for a team of 13 engineers, 24/7/365, at one of Comcast's five National Data Centers housing 21,000+ servers. Began managing site after 3 years, also overseeing 35 remote headends, data centers, and communication rooms nationwide. Supervised all installs, decommissions, and migrations; created DC manuals, cabling standards, and Tier I support procedures; managed all field engineer access and badge authorization.

Servers: HP ProLiant DL360 G7/G8/G9, DL380 G7/G8/G9, DL560 G8, DL580 G8, BL460c Gen8/Gen9 (HP BladeSystem c7000/c3000 chassis); Dell PowerEdge R720, R720xd, R620, R520, R730, R730xd, R630, M710/M710HD/M820 blades (Dell PowerEdge M1000e chassis); IBM System x3550 M4/M5, x3650 M4/M5, x3850 X6; Cisco UCS B200 M3/M4/M5, B230 M2, B420 M3 (Cisco UCS 5108 chassis); Supermicro SuperServer 6028R-TR, 2028R-C1R4+; HP Moonshot m710x/m800 cartridge servers.

Networking: Cisco Catalyst 6509-E/6513 (Supervisor 720-3BXL & Sup2T), Cisco Nexus 5596UP, 5672UP, 6004, 7009, 7010, 7706 core fabric; Cisco ASR 9001/9006 edge routers; Cisco Catalyst 3750X, 3850, 4507R+E, 4510R+E access layer; Cisco Nexus 2248TP/2232PP fabric extenders (FEX); Juniper EX4200, EX4300, QFX5100 top-of-rack; Arista 7050SX, 7160 data center switching; F5 BIG-IP LTM 2000s/4000s/6900 load balancers; Palo Alto PA-3020/PA-5020 firewalls; Brocade ICX 6450/6610; APC InfraStruXure/Symmetra LX UPS systems.

Storage: EMC VNX5300/VNX5500/VNX5700, EMC VMAX 10K, NetApp FAS3240/FAS3270/FAS8040, HP 3PAR StoreServ 7200/7400. Certified all copper (Cat6/Cat6A) and fiber (OM3/OM4 multimode, OS2 single-mode) cabling with Fluke DTX-1800 and Fluke DSX-5000 CableAnalyzer.

21,000+ ServersHP DL360/DL380 G7/G8HP BL460c Gen8Dell R720 / R730xdCisco UCS B200 M3/M4Cisco Nexus 5596 / 7009Cisco Catalyst 6509-EJuniper EX4200EMC VNX5500NetApp FAS3270Fluke DTX-1800OM3/OM4 Fiber35 Remote DCs

Comcast Data Center Work

January 2010 - June 2011

Data Center Infrastructure Engineer

Chicago Mercantile Exchange (CME Group) · Chicago & Naperville, IL

Lead technician at CME's Tier IV data centers - the backbone of global financial derivatives trading. Racked, stacked, and cabled thousands of servers including HP ProLiant DL360/DL380 G6/G7, BL490c blades; Dell PowerEdge R710, R610, R510, M610/M710 blades; IBM System x3550/x3650 M2, iDataPlex dx360 M2; Sun Oracle SPARC T4-1/T4-2. Networking: Cisco Catalyst 6506-E/6509-E (Sup 720-3BXL), Cisco Nexus 5020/7010, Force10 S4810 ToR, HP ProCurve 5412zl. Installed and tested OM3/OM4 fiber and Cat6/Cat6A cabling; certified with Fluke DTX-1200/1800.

Cable Labeling Automation: Developed early automation workflows for cable label generation - structured naming conventions, batch-printing scripts, and documentation templates that dramatically reduced labeling errors across thousands of cable runs. These systems became the documentation standards carried through Comcast and later codified into EZ Blockchain's full operational manual.

HP DL360/DL380 G6/G7HP BL490cDell R710 / M610IBM x3550/x3650 M2Sun SPARC T4Cisco Nexus 5020 / 7010Force10 S4810HP ProCurve 5412zlCat6/Cat6AFluke DTX-1200Cable Label AutomationTier IV Ops

February 2000 - January 2010

Central Lead, IT Support

Kiddie Kandids Portrait Studios · IL, IN, MO, WI

Managed computer systems and small networks across 12+ local and remote studios in four states. Installed all PC and Mac hardware, networked all systems, provided remote support via VNC and Timbuktu. Worked with Dell, Photogenic, and Apple on equipment RMA. Traveled 30% of the time for maintenance and emergency break/fix.

Dell WorkstationsApple MacMulti-Site Network AdminVNC Remote Support

September 1996 - January 2000

Manager / Owner - Cathedral Computer Consultants

Chicago, IL

Founded and operated a computer repair and consulting shop. Built white-box systems for retail sale. Pulled and terminated Cat3, Cat5, and Cat6 cable; punched down on phone blocks. Repaired Apple, PCs, laptops, and game consoles. Hired, trained, managed, and terminated employees. Traveled to client locations for break/fix engagements.

Cat3 / Cat5 / Cat6Punch-Down BlocksWhite-Box BuildsApple & PC RepairBusiness Owner

21K+

Servers Managed

Comcast National DC, Northlake IL

60 MW

Mining Capacity

EZ Blockchain portfolio under management

95%+

BTC Hashing Uptime

Targeting five-nines (99.999%)

Remote DCs Supervised

Headends, DCs, comm rooms (Comcast)

6×

Retained as Expert Witness

4× testified · 5 depositions · March 2026 most recent

Certifications & Training

Blockchain Fundamentals (2026) IDCA Data Center Standards (2024) Excel 2019 Expert Outside Plant Cabling (2018) High-Density Fiber Optic (2018) IT Physical Infrastructure Best Practices (2018) Micro Cable & Microduct (2018) Next-Gen Fiber Speeds (2017) Harsh Environments Infrastructure (2017) MS Word & Excel 2013 CPR / First Aid / Seizure Care Excellence Award - DC Management (2015)

Legal Expertise

Types of Crypto Cases

If your case involves any of these areas, Aviran has real operational experience - not just academic knowledge - to support your position with credibility and precision.

Hosting Agreement Disputes

Breach of contract, failure to deliver promised uptime or hashrate, improper billing, unauthorized decommissioning, or "hashrate sold" vs. physical hardware sold disputes.

ASIC Hardware Valuation

Fair market value of ASIC hardware (e.g., Antminer S19 Pro during 12/2024), depreciation calculations, or the value gap between physical machines and equivalent hashrate contracts.

ASIC Maintenance & Hardware Standards

Disputes involving whether proper maintenance procedures were followed for ASIC hardware - including hashboard servicing, PSU replacement, thermal management, firmware updates, and whether downtime resulted from negligence or industry-accepted failure rates.

Financial Loss & Damages

Actual mining revenue lost due to downtime, mismanagement, or breach of contract - based on real coin prices, hashrate data, electricity costs, and pool performance records.

Operational Standard of Care

Was the facility managed to industry standards? Aviran evaluates maintenance practices, alarm response, power management, and hardware care against what a reasonable operator would do.

Decommissioning & Equipment Moves

Improper shutdown, hardware damage during moves, chain-of-custody failures, or failure to follow agreed-upon decommissioning procedures.

Transparent Pricing

Rate Schedule

Service	Rate
Attorney Consultation	$500 / hr
Document Review, Analysis & Reports	$500 / hr
Onsite Visits	$250 / hr
Deposition Testimony	$675 / hr
Trial / Arbitration Testimony	$775 / hr
Site Inspection & Audit	Contact for Quote
Operational Consulting	Contact for Quote

Rate Disclaimer: The rates listed above are general estimates and are subject to change. Final fees depend on the nature, complexity, and scope of each engagement. Rates are not guaranteed until a formal engagement letter is executed. Aviran reserves the right to adjust pricing based on case specifics, required expertise, timeline demands, and travel requirements. All rates are confirmed in writing prior to the commencement of any work.

Travel & Expenses

All reasonable out-of-pocket expenses billed at actual cost - airfare, mileage, ground transportation, lodging, meals, per diem, and exhibit preparation. All travel time billed portal-to-portal.

No Surprise Invoices

Rates listed here do not change without prior written agreement. Retainer agreements available for extended engagements. All billing is transparent and itemized.

Plaintiff & Defense

50% plaintiff, 50% defense. Opinions come from operational reality - not from who is paying. Aviran testifies to what he knows from the field.

Who I've Worked With

Attorney References

These attorneys have worked directly with Aviran on cryptocurrency hosting disputes. Contact them to discuss the quality of his testimony, analysis, and real-world expertise.

Most Recent Case Outcome

Crypto Infiniti v. EZ Blockchain - Federal Jury Trial, Chicago, March 2025

Unanimous defense verdict in favor of EZ Blockchain on all claims in a $15M dispute. Michael Kozlowski and Alex Kontopoulos below tried this case - Aviran served as expert witness.

“Aviran was fearless on the stand — he never backed down under aggressive cross-examination and delivered his testimony with complete confidence. He understood his opinion perfectly and knocked it out of the park.”

Michael Kozlowski

ESBROOK P.C. · Chicago, IL

312-319-7682

“Working with Aviran in the Crypto Infinity trial was outstanding. He explained complex ASIC and hosting issues in a way that was simple, clear, and highly effective for the jury. He truly was a turning point for our case.”

Alex Kontopoulos

ESBROOK P.C. · Chicago, IL

312-910-0957 (office)

847-224-0075 (mobile)

“Aviran is one of the most effective expert witnesses I’ve used. He stayed calm and plain-spoken in front of the arbitrator, making highly technical concepts easy to understand while never losing sight of the client’s objectives.”

Alexander T. Jones

Kutak Rock LLP · Little Rock, AR

501-975-3113

“Aviran does an exceptional job — he is straightforward, credible, and fearless before attorneys. He grasps the case mission immediately and presents his opinions in a clear, powerful manner that resonates with arbitrators, judges and juries.”

McKenzie L. Raub

Kutak Rock LLP · Little Rock, AR

501-975-3127

Media & Recognition

In the Press

Esbrook P.C. Press Release · March 2025

Esbrook P.C. Secures Complete Defense Verdict for EZ Blockchain in $15M Cryptocurrency Dispute

Following a multi-day federal jury trial in Chicago, the jury entered a unanimous verdict in favor of EZ Blockchain on all claims - fraud, breach of four contracts, unjust enrichment, and constructive trust. Aviran served as one of three cryptocurrency expert witnesses, delivering real-world operational testimony that helped defeat Crypto Infiniti's $15 million claim in its entirety.

Read Full Press Release →

Conference Panelist · Donald E. Stephens Convention Center, Rosemont, IL

Speaker - "Disaster Recovery and Business Continuity" Conference

Aviran presented to CIOs, VPs, Directors, DR Managers, and Infrastructure & Security Managers on designing resilient infrastructure, ransomware readiness, avoiding "all or nothing" fail-over approaches, and data center modernization strategies for business continuity.

View Event →

JurisPro Expert Witness Directory

Listed Expert - Cryptocurrency Hosting & ASIC Mining Operations

Retained 6 times, 4 times testified. Qualified expert in cryptocurrency mining operations, ASIC hardware deployment, and real-world financial loss assessment.

View Profile →

EZ Blockchain - Company Profile

Director of Operations & Infrastructure Featured

"With Tier III and Tier IV Data Center experience, Aviran is responsible for Data Center Standards, Processes, Procedures, and Maintenance… He has driven BTC Hashing uptime to well over 95%."

Read Profile →

SEAK Expert Witness Directory

Listed Expert - Cryptocurrency & Bitcoin Mining

Profiled in SEAK, one of the most widely used expert witness directories among attorneys nationwide.

View SEAK Profile

Published Articles

Bylined articles on cryptocurrency, mining operations, and expert testimony.

In progress: The 7 Layers of Crypto, an authoritative paper defining each layer of the crypto stack and the roadmap that connects them.

Media inquiries and speaking opportunities welcome. Contact via the form below.

Operational Insights

Field Insights

In the Media - YouTube Interview

The Bitcoin Angle of the Nancy Guthrie Kidnapping Case

Aviran joined investigative commentator and former FBI Special Agent Jennifer Coffindaffer to break down the cryptocurrency side of the Nancy Guthrie kidnapping case, explaining how bitcoin works, how it moves, and what it means for an investigation of this kind.

Watch the interview

In the Media - YouTube Interview

Follow-Up Q&A: Bitcoin, Blockchain, and the Questions Everyone Asked

In a follow-up conversation with Jennifer Coffindaffer, Aviran answered viewer questions about bitcoin, blockchain, and how digital assets show up in real criminal cases, in plain language anyone can follow.

Watch the interview

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Operations

What Makes a Good ASIC Hosting Contract - From an Operator's Perspective

After reviewing hundreds of hosting agreements, the most dangerous gaps are rarely in the rate schedule. They're in the uptime SLA definition, the force majeure clause, and what happens to your hardware during a dispute.

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Litigation - Crypto Infiniti v. EZ Blockchain, 2025

How Hashrate is Misrepresented in Crypto Hosting Litigation

The difference between selling physical ASIC hardware and selling hashrate is enormous - legally, financially, and operationally. In the $15M Crypto Infiniti trial, opposing experts routinely conflated the two in damages calculations. The jury saw through it - unanimous defense verdict.

🌡️

Operations

ASIC Thermal Management: When Downtime Is the Host's Fault and When It Isn't

Not all ASIC downtime is equal. Understanding the difference between hardware failure, facility failure, and operator negligence requires knowing what normal thermal thresholds, PSU failure rates, and hashboard diagnostics actually look like in the field.

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Finance

Calculating Real Mining Damages: Why Theoretical Models Get It Wrong

Damages experts who have never operated a facility routinely build models using ideal hashrate, peak coin prices, and zero-downtime assumptions. Real operations don't work that way - and the gap between theory and reality can swing damages by millions.

🎙️

Speaking - Disaster Recovery Conference, Rosemont IL

Building Resilient Infrastructure: Beyond the All-or-Nothing Fail-Over

Aviran presented to CIOs, VPs, and Infrastructure Managers on ransomware readiness, data center modernization, and practical disaster recovery strategies - drawing directly from his experience managing live Tier IV infrastructure at scale.

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Always at the Forefront

Continually Learning & Growing

Aviran doesn't just manage mining operations - he lives inside the Crypto ecosystem. From industry conferences to direct relationships with the world's top ASIC manufacturers, he stays on the cutting edge of everything that affects the expert opinions he forms.

Bitcoin Conference

Meeting the Legends of Bitcoin

Building relationships at the top of the industry.

Bitcoin 2022 - Miami · Annual Industry Conference

Bitcoin Conference - industry networking

Speaker & Industry Networking · Bitcoin Conference

Aviran Vargas with Antminer mascot - Bitmain booth

Bitmain · Antminer Booth

Direct manufacturer experience

Canaan · Avalon ASIC

Canaan 10th Anniversary

MicroBT · WhatsMiner

M-series product line experience

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Why This Matters to Your Case

Aviran has direct, personal experience with Bitmain (Antminer), MicroBT (WhatsMiner), and Canaan (Avalon) - the three largest ASIC manufacturers in the world. When a case involves questions about ASIC hardware performance specs, manufacturer warranties, RMA processes, or industry-standard deployment practices, he doesn't need to look it up. That hands-on knowledge translates directly into expert opinions that hold up under the toughest cross-examination.

₿ Ξ

Common Questions

Frequently Asked

Most crypto experts have academic or financial backgrounds. I am an active Director of Operations at a real hosting company - I work with ASIC miners every single day. I have physically deployed, repaired, moved, and decommissioned hardware. That direct, ongoing, daily experience is what shows in testimony. You are hiring someone who was on the floor this week.

Yes - 50% plaintiff, 50% defense. I am retained to provide honest, fact-based analysis regardless of which side hires me. My opinions come from operational reality, not from who is paying. I will not change a technical conclusion based on what a client wants to hear.

Absolutely - I have done it multiple times. I break down hashrate, uptime, ASIC hardware, power costs, and hosting agreements in ways that are clear, credible, and compelling - without oversimplifying the facts that matter.

I am based in Chicago, IL and will travel anywhere in the United States for site inspections, depositions, or trial testimony. I have managed facilities in multiple U.S. states and am comfortable working in rural, industrial, and urban settings. Travel costs are billed at actual cost.

Extensive hands-on experience with Bitmain Antminer series (S19, S19 Pro, S19 XP, S21), WhatsMiner series (M30S, M50, M60, M70), earlier generation hardware and alt coin ASICs. I have managed the full lifecycle - deployment, operation, RMA, and decommissioning - for all major commercial ASIC lines. I can speak to firmware, hashboard diagnostics, PSU compatibility, and real-world efficiency under various power and thermal conditions.

Typically within one to two weeks for an initial case evaluation, depending on document volume. If your matter has a tight timeline, contact me directly to discuss availability. I take a limited number of engagements at any one time to ensure each one receives the attention it deserves.

Yes - I served as one of three cryptocurrency expert witnesses in Crypto Infiniti v. EZ Blockchain, a $15M federal jury trial in Chicago (March 2025). Crypto Infiniti alleged breach of four hosting contracts, fraud, unjust enrichment, and constructive trust. I provided real-world operational testimony on ASIC hardware performance, facility standards, and hosting industry practices. After more than a week of testimony and over 100 exhibits, the jury returned a unanimous verdict in favor of EZ Blockchain on all claims. The case was tried by Esbrook P.C. - Michael Kozlowski and Alex Kontopoulos - who are listed as references on this site.

Yes - I am the Director of Operations & Infrastructure at EZ Blockchain, an active role I hold today. I manage live ASIC mining facilities, monitor real hashrate data daily, negotiate vendor and energy contracts, and oversee actual client hosting agreements. I am not a retired operator or an academic. The knowledge I bring to expert engagements is drawn from what I am doing this week - not from a career I left years ago.

Absolutely - and I'd encourage you to call every single one of them. I have enough confidence in my track record and the quality of my work that I've listed my references directly on this website, names and phone numbers included. These aren't decorative - they're working attorneys who've had me on the stand. Call them. Ask the hard questions. I'm not worried about what they'll say. That kind of confidence is exactly what you want from an expert witness before you put them in front of a judge.

I don't need to memorize facts for cross - I lived them. When opposing counsel challenges my opinions on ASIC performance, facility uptime, hosting contract terms, or power management, I'm drawing from direct, daily operational experience that cannot be drilled away. I have faced aggressive cross-examination from skilled attorneys and held my ground every time - because my opinions are grounded in reality, not in reports I read to prepare for the case. The more technical the challenge, the better I perform.

Credentials tell a judge what someone studied. My testimony tells them what I do every single day. I have gone up against opposing experts with multiple advanced degrees and long lists of certifications - and the outcomes speak for themselves. A unanimous $15M defense verdict doesn't happen because one expert had more letters after their name. It happens because the jury could tell who actually knew what they were talking about. Judges and arbitrators are sophisticated enough to recognize the difference between someone who manages real mining facilities and someone who modeled them in a spreadsheet. I'll take that comparison every time.

For a cryptocurrency hosting or ASIC mining dispute, the most useful materials for an initial review include: the hosting agreement(s) and any amendments or supplemental agreements; power purchase or energy agreements; uptime and hashrate data logs; any RMA or maintenance records; client communications related to performance complaints; financial records showing alleged losses; and the opposing expert's report if one has been produced. The more operational data you can share - actual pool data, power draw records, facility logs - the more precise my analysis will be. Send what you have. I've worked with incomplete records before.

Who I Work With

Who Hires Me

I work equally for both sides of a dispute. My role is to provide honest, fact-based operational analysis - not to advocate.

Plaintiff Attorneys

Building Your Case Against the Host

✓Proving that promised uptime or hashrate was never delivered
✓Quantifying actual revenue lost from downtime or mismanagement
✓Establishing the industry standard of care that was violated
✓Explaining ASIC hardware value vs. hashrate contract value to a jury
✓Reviewing decommissioning records to identify improper procedures

Defense Attorneys

Defending the Host Against Claims

✓Demonstrating that downtime fell within industry-accepted failure rates
✓Rebutting inflated damages calculations with real operational data
✓Showing that ASIC hardware performance was within normal parameters
✓Evaluating opposing expert reports for factual and operational errors
✓Providing context on the realities of large-scale ASIC hosting operations

Case Study - Defense Victory: Crypto Infiniti v. EZ Blockchain (U.S. District Court, Chicago, 2025)

Retained as a defense expert in a $15M jury trial involving claims of fraud and breach of four hosting contracts. Aviran provided real-world operational testimony on ASIC hardware performance, facility standards, and hosting industry norms. The jury returned a unanimous verdict in favor of EZ Blockchain on all claims - fully vindicating the company against all fraud, breach, unjust enrichment, and constructive trust claims.

Read Verdict →

Conflict Check Policy: A conflict check is conducted at no charge before any engagement begins. If a conflict exists, you will be informed immediately. All pre-engagement communications are confidential.

Experience

Expert Witness Engagements

Retained six times as an expert witness in matters involving bitcoin mining operations, infrastructure, ASIC equipment, and the contractual relationship between mining operators and their customers.

United States v. Kovar

2026 · In Progress

Retained by Federal Public Defender · U.S. District Court, D. Nevada

Retained to opine on background information regarding cryptocurrency, blockchain technology, and cryptocurrency mining, and to explain crypto and blockchain technology to a federal jury.

[Confidential]

2026 · In Progress

American Arbitration Association (AAA) - Expert Witness

Retained to opine on the standard of care for bitcoin mining site operators, the cause of ASIC hardware failures following two winter-storm events at Northeast hosting sites, and defects in the claimant's damages model. Testified that the claimant manufactured the faulty conditions that caused the ASICs to fail.

[Confidential]

2026 · In Progress

American Arbitration Association (AAA) - Expert Witness

Retained to opine on the effectiveness of day-to-day mining operations and whether the parties to the dispute followed proper operational procedures.

[Confidential]

2026

American Arbitration Association (AAA) - Expert Witness

Testified to the value of ASIC equipment and to general contract expectations and operational practices in the bitcoin mining industry.

Crypto Infiniti v. EZ Blockchain

2025

U.S. District Court (Federal Litigation) - Expert Witness for Defense

Testified on operational practices in bitcoin mining and on the use of unstable ASIC equipment at the root of the dispute. The jury returned a complete defense verdict in favor of EZ Blockchain on a $15M claim.

[Confidential]

2024 - 2025

American Arbitration Association (AAA) - Expert Witness

Testified on the design and functionality of mining containers (pods) and on the operational practices that contributed to the plaintiff's unsuccessful operations.

Legal

Privacy Policy

Last updated: June 26, 2026

This Privacy Policy explains how Aviran Vargas, operating as BTC Expert Services (Behind The Crypto) ("we," "us," or "our"), collects, uses, and protects information when you visit btcexpertwitness.com (the "Site") or contact us about expert witness or consulting services. By using the Site or submitting information to us, you agree to the practices described below.

Information We Collect

We collect information you provide directly, such as your name, email address, phone number, company or firm name, and any details you share about your matter when you complete our contact form or a Google Ads lead form. We also collect technical data automatically, such as IP address, browser type, device information, pages viewed, referring website, and visit times, through cookies and similar technologies. If you respond to one of our advertisements, advertising partners such as Google may share the information you submitted through a lead form so we can follow up.

How We Use Your Information

We use the information to respond to your inquiries and provide requested services, to run a conflict check before any engagement, to communicate with you about your matter, to operate and improve the Site, to measure and improve our advertising, and to comply with legal obligations and protect our rights.

Cookies and Tracking Technologies

The Site uses cookies and similar technologies to remember preferences, understand usage, and support advertising and measurement, which may include Google Analytics and Google Ads conversion tracking. You can control cookies through your browser settings, and you can opt out of personalized Google advertising at adssettings.google.com. Learn how Google uses data at policies.google.com/technologies/partner-sites.

How We Share Information

We do not sell your personal information. We may share information with trusted service providers who help us operate the Site and our advertising, such as hosting, analytics, and advertising platforms, who may use it only to perform services for us. We may also disclose information when required by law, subpoena, or legal process, or to protect our rights, safety, or property.

Third-Party Links

The Site may link to third-party websites and profiles, such as professional directories and social media. We are not responsible for their privacy practices, and we encourage you to review their policies before providing information.

Data Retention

We keep personal information for as long as needed to respond to your inquiry, provide services, meet professional and recordkeeping obligations, and comply with applicable law. When it is no longer needed, we take reasonable steps to delete or de-identify it.

Data Security

We use reasonable administrative, technical, and physical safeguards to protect the information we hold. No method of transmission or storage is completely secure, so we cannot guarantee absolute security.

Your Choices and Rights

You may opt out of marketing communications at any time by following the unsubscribe instructions in our messages or by contacting us. Depending on where you live, you may have the right to request access to, correction of, or deletion of your personal information, and to ask how it is used. To make a request, contact us using the details below, and we will respond consistent with applicable law.

Confidentiality of Inquiries

We treat the inquiries we receive as confidential. Please note that contacting us through the Site does not create an attorney-client or expert-client relationship, and communications are not privileged until a formal engagement agreement is signed. Avoid sending sensitive case materials until an engagement is in place.

Children's Privacy

The Site is intended for a professional audience and is not directed to children. We do not knowingly collect personal information from anyone under the age of 18. If you believe a minor has provided us information, please contact us so we can remove it.

Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date above. Your continued use of the Site after changes are posted means you accept the updated policy.

Contact Us

You can reach us by phone at 773-312-4124, by mail at 311 S. Wacker Drive, Suite 1410, Chicago, IL 60606, or through the contact form at https://www.btcexpertwitness.com/#contact

Crypto Expert Witness Focus Areas

Aviran Vargas, Crypto Expert Witness

Theory vs. Reality

Crypto Expert Witness Services

How to Retain Me

Submit Your Inquiry

Initial Call & Conflict Check

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Court-Qualified Expert Witness

Director of Operations & Infrastructure

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25+ Years Working the Floor

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Plaintiff & Defense

Attorney References

In the Press

Field Insights

The Bitcoin Angle of the Nancy Guthrie Kidnapping Case

Follow-Up Q&A: Bitcoin, Blockchain, and the Questions Everyone Asked

What Makes a Good ASIC Hosting Contract - From an Operator's Perspective

How Hashrate is Misrepresented in Crypto Hosting Litigation

ASIC Thermal Management: When Downtime Is the Host's Fault and When It Isn't

Calculating Real Mining Damages: Why Theoretical Models Get It Wrong

Building Resilient Infrastructure: Beyond the All-or-Nothing Fail-Over

Continually Learning & Growing

Frequently Asked

Who Hires Me

Building Your Case Against the Host

Defending the Host Against Claims

Expert Witness Engagements

United States v. Kovar

[Confidential]

[Confidential]

[Confidential]

Crypto Infiniti v. EZ Blockchain

[Confidential]

Available Nationwide

Request a Consultation

Privacy Policy

Information We Collect

How We Use Your Information

Cookies and Tracking Technologies

How We Share Information

Third-Party Links

Data Retention

Data Security

Your Choices and Rights

Confidentiality of Inquiries

Children's Privacy

Changes to This Policy

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