Best crypto onchain attestations in Sweden
Sign Protocol ranks highest in ChainChoice’s published onchain attestations ranking among the providers that list Sweden. 30% flat — losses are 70% deductible, so tax-loss harvesting has real value here.
How this page is reviewed
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 Sweden residents use in November 2026?
Sign Protocol ranks highest in ChainChoice’s published onchain attestations ranking among the providers that list Sweden. The order is the published ranking itself; providers whose terms exclude Sweden are removed. Check authorisation with FI before depositing.
- Sweden residents holding capital in SEK
- Users who need FI-aligned compliance and audit-grade reporting
- Buy-and-hold profiles benefiting from Sweden'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 FI does not currently authorise
General guidance for Sweden: 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 Sweden
In ChainChoice’s published ranking order, from this category’s 7 providers: those whose terms exclude Sweden 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 SwedenSign 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 SwedenEthereum 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 SwedenVerax 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 SwedenPrivado 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 SwedenCoinbase 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 SwedenSolana 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 SwedenHuman 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
Provider links appear once we know which country you are browsing from: ChainChoice links to providers only where it serves in full.
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 FI register; a gap shows "—", never an estimate.
| Provider | Taker fee in Sweden | KYC tier | SEK rails | FI 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 FI register; each fee as of its entry's latest verification (accuracy methodology).
Is using a crypto attestation layer legal in Sweden?
Yes. Sweden regulates crypto-asset service providers under MiCA (EU Regulation 2023/1114), enforced from 30 December 2024. FI oversees onchain attestations operating in Sweden; only providers authorised under MiCA may serve retail clients.
How is crypto taxed in Sweden?
Capital gains on crypto taxed at 30% under "income from capital." Losses are 70% deductible against capital income. Editorial summary, not tax advice: consult a qualified tax advisor in Sweden before filing.
What payment methods work for buying crypto in Sweden?
The most common rails for retail onramps in Sweden are: SEPA, Swish, Bankgiro. 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 Sweden?
Most major platforms have completed MiCA licensing for the EU and serve Sweden via passporting. Availability of specific products (staking, derivatives) may vary by member state — the shortlist above filters by what each platform actually offers to Sweden residents.