Best crypto onchain attestations in the United Kingdom
Sign Protocol ranks highest in ChainChoice’s published onchain attestations ranking among the providers that list the United Kingdom. Post-Brexit: not under MiCA. FCA financial-promotion rules (PS22/10) since Oct 2023 require strict cooling-off + risk warnings.
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Reviewed means every product ranked on this page was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
Accountable for this review: Mathias Siemonsmeier, Founder.
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Which crypto attestation layer should United Kingdom residents use in November 2026?
Sign Protocol ranks highest in ChainChoice’s published onchain attestations ranking among the providers that list the United Kingdom. The order is the published ranking itself; providers whose terms exclude the United Kingdom are removed. Check authorisation with FCA before depositing.
- United Kingdom residents holding capital in GBP
- Users who need FCA-aligned compliance and audit-grade reporting
- Buy-and-hold profiles benefiting from the United Kingdom's tax treatment
- Sophisticated retail and family-office treasurers
- Derivatives / perpetuals traders (use a regulated futures venue instead)
- Privacy-focused users avoiding KYC (these are licensed venues)
- Day-traders chasing the lowest spreads regardless of regulator posture
- Anyone needing a service FCA does not currently authorise
General guidance for the United Kingdom: the ranking engine does not compute these notes and they do not change the order below. If none fits you, answer the Find My Best questions for a result for your profile.
7 onchain attestations listed for the United Kingdom
In ChainChoice’s published ranking order, from this category’s 7 providers: those whose terms exclude the United Kingdom are removed; those silent on it come last. Each chip names the basis: a dated check, a region listing, or the provider's own claim.
#1 for the United KingdomSign Protocol#1 globallyProvider states broad availability Permissionless omnichain attestation protocol with schema-enforced validity caps and reasoned revocation, deployed as upgradeable proxies on nine maintained EVM mainnets.
Revocation and expiry semantics — 10/10Verifiable chain deployments — 9/10Cost per attestation — 8/10#2 for the United KingdomEthereum Attestation Service (EAS)#2 globallyProvider states broad availability Permissionless onchain and offchain attestation registry with a schema registry, deployed on 11 EVM mainnets and shipped as an OP Stack predeploy.
Revocation and expiry semantics — 9/10Verifiable chain deployments — 9/10Cost per attestation — 9/10#3 for the United KingdomVerax Attestation Registry#3 globallyProvider states broad availability Consensys-maintained shared attestation registry on four EVM mainnets where issuance runs through named, registry-allowlisted Portal contracts.
Issuer permissioning and identity — 9/10Revocation and expiry semantics — 8/10Verifiable chain deployments — 8/10#4 for the United KingdomPrivado ID (formerly Polygon ID)#4 globallyProvider states broad availability Self-hosted issuer-node stack for W3C verifiable credentials with zero-knowledge presentation and three selectable revocation-status transports, anchored to CREATE2 State contracts on five listed networks, one of which (Polygon zkEVM) has produced no block since 3 July 2026.
Revocation and expiry semantics — 7/10Issuer permissioning and identity — 7/10#5 for the United KingdomCoinbase Verifications#5 globallyProvider states broad availability Coinbase-issued EAS attestations on Base recording verified-account, country-of-residence and Coinbase One status, written by a single permissioned attester contract.
Issuer permissioning and identity — 8/10Cost per attestation — 8/10#6 for the United KingdomSolana Attestation Service (SAS)#6 globallyProvider states broad availability Solana Foundation attestation program using per-issuer Credential accounts with explicit authorized-signer sets and PDA-derived attestations.
Issuer permissioning and identity — 8/10Cost per attestation — 7/10#7 for the United KingdomHuman Passport (formerly Gitcoin Passport)#7 globallyProvider states broad availability Sybil-resistance scoring service that aggregates verified credentials into a score and optionally mints it as an EAS attestation readable through a Decoder contract on seven mainnets.
Verifiable chain deployments — 8/10Issuer permissioning and identity — 6/10
Commission: None of these providers pays ChainChoice anything for these links. Disclosure
Links to providers are paused for UK readers while we complete a UK financial-promotions review.
Crypto products are high risk. Check the provider is authorised where you live before you deposit.
- Control failure: a key or vote changes the rules, freezes or mints.Scored by Revocation and expiry semantics · 32% (Sign Protocol 10/10, Ethereum Attestation Service (EAS) 9/10, Verax Attestation Registry 8/10)Scored by Verifiable chain deployments · 24% (Sign Protocol 9/10, Ethereum Attestation Service (EAS) 9/10, Verax Attestation Registry 8/10)
- Information failure: the number is wrong or bought, or your data leaks.Scored by Issuer permissioning and identity · 26% (Sign Protocol 6/10, Ethereum Attestation Service (EAS) 6/10, Verax Attestation Registry 9/10)
Each cell is verified against the provider's filings or the FCA register; a gap shows "—", never an estimate.
| Provider | Taker fee in the United Kingdom | KYC tier | GBP rails | FCA license |
|---|---|---|---|---|
| #1Sign Protocol | — | — | — | — |
| #2Ethereum Attestation Service (EAS) | — | — | — | — |
| #3Verax Attestation Registry | — | — | — | — |
| #4Privado ID (formerly Polygon ID) | — | — | — | — |
| #5Coinbase Verifications | — | — | — | — |
Source: ChainChoice provider catalog cross-referenced with the FCA register; each fee as of its entry's latest verification (accuracy methodology).
Is using a crypto attestation layer legal in the United Kingdom?
Yes. Crypto onchain attestations are regulated in the United Kingdom by Financial Conduct Authority (FCA). Always verify a platform's licensing status with FCA before transacting.
How is crypto taxed in the United Kingdom?
Capital gains on crypto taxed at 18% (basic rate) or 24% (higher rate) above the annual exempt amount (£3,000 for 2026/27 on gov.uk, read 21 October 2026). Editorial summary, not tax advice: consult a qualified tax advisor in the United Kingdom before filing.
What payment methods work for buying crypto in the United Kingdom?
The most common rails for retail onramps in the United Kingdom are: Faster Payments, BACS, CHAPS. Most regulated platforms support at least the first of these. Card payments may incur 2-4% fees vs. ~0.5% for bank transfers.
Are international platforms (Coinbase, Kraken, Binance) available in the United Kingdom?
Availability varies by platform and product. The United Kingdom has its own licensing regime under FCA, and not every global platform is registered. The shortlist above removes platforms whose terms exclude the United Kingdom; the chip on each row says whether availability is verified, listed or unstated.