Reliability Score · methodology v1.0 · updated 2026-10-04
Coinbase: 68/100
Score over time
65 – 68 across 325 daily readings since 2026-06-23. The burgundy point is today.
Score breakdown
Withdrawal reliability weight 25%
59
Why 59 · 2 sources
2 recorded withdrawal incidents within the 24-month window, weighted by severity and recency.
Proof of reserves weight 20%
50
Why 50 · 1 source
No Merkle-tree PoR program; as a US public company it substitutes audited financial statements (annual 10-K audit, quarterly reviews) and funded PoR research grants.
Regulatory standing weight 20%
80
Why 80 · 2 sources
MiCAR CASP licence (Luxembourg CSSF, announced 2025-06-20) and Nasdaq-listed with SEC reporting. Resolved actions: SEC case dismissed with prejudice (Feb 2025); UK FCA fine of GBP 3.5M (Jul 2024, e-money unit onboarding breaches).
Security history weight 15%
81
Why 81 · 1 source
1 recorded security incident within the 24-month window, weighted by severity, recency and reimbursement.
Support quality weight 10%
80
Why 80 · 1 source
Trustpilot ~4.0/5 (2026-06-10; review count approximate, distribution polarised ~44% five-star / ~44% one-star) as a complaint-pattern proxy.
Operational maturity weight 10%
72
Why 72 · 1 source
Founded 2012; largest US exchange, global top-5 spot; public company since 2021. Documented outage pattern in 24 months: AWS outage Oct 2025 (transfers delayed ~3h), Cloudflare Nov 2025 (~3h), AWS thermal event May 2026 (~8h incl. halted withdrawals — official postmortem), plus balance-display failures during the Feb 2024 volatility spike.
Incident timeline · facts with dates
2026-05-07
Withdrawal · sev 3
What happened · sourced
2026-05-07/08: an AWS data-center thermal event halted trading, sends/receives, deposits and withdrawals for ~8 hours (full recovery ~12h later), per Coinbase’s own postmortem.
source2025-10-20
Withdrawal · sev 1
What happened · sourced
2025-10-20: the AWS us-east-1 outage delayed or failed logins, trading and transfers for ~3h17m of degraded time, per Coinbase’s retrospective.
source2025-05-11
Security · sev 4
What happened · sourced
May 2025: insider data breach — overseas support contractors were bribed to exfiltrate customer data of 69,461 customers (PII incl. government-ID images and masked financial data; no passwords, keys or funds). A $20M ransom was refused; Coinbase committed to reimburse customers tricked by follow-on impersonation scams and estimated $180–400M total cost (SEC 8-K).
source2024-07-25
Regulatory · sev 2
What happened · sourced
UK FCA fined CB Payments Ltd GBP 3.5M for onboarding/serving high-risk customers in breach of a voluntary requirement (July 2024).
source
Sources & method: Method → · All exchanges: /exchanges
More on Coinbase: hidden spread · withdrawal fees
Head to head: vs Binance · vs Kraken · vs Bitget · vs Bitpanda · vs Bitstamp
Not investment advice. Skontro is not a CASP under MiCAR. Reliability Scores are information, not recommendations: every negative datapoint is dated and sourced, the methodology is public, and no exchange can pay to change a score.