Best crypto rollup-as-a-service in Spain
Karnot ranks highest in ChainChoice’s published rollup-as-a-service ranking among the providers that list Spain. Form 721 reporting for foreign-held crypto over €50,000 — non-filing penalties are steep, so exchange jurisdiction matters.
Re-read due since
The published cadence is 45 days; this page's next read was due on 9 November 2026.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 rollup-as-a-service provider should Spain residents use in November 2026?
Karnot ranks highest in ChainChoice’s published rollup-as-a-service ranking among the providers that list Spain. The order is the published ranking itself; providers whose terms exclude Spain are removed. Check authorisation with CNMV before depositing.
- Spain residents holding capital in EUR
- Users who need CNMV-aligned compliance and audit-grade reporting
- Buy-and-hold profiles benefiting from Spain'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 CNMV does not currently authorise
General guidance for Spain: 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.
8 rollup-as-a-service listed for Spain
In ChainChoice’s published ranking order, from this category’s 8 providers: those whose terms exclude Spain are removed; naming Spain or a region that covers it counts the same, and those whose terms do not state it come last. Each chip names the basis: a dated check, a region listing, or the provider's own claim.
#1 for SpainKarnot#1 globallyProvider states broad availability Starknet appchains on the Madara sequencer stack, with a published monthly mainnet price
A price you can act on before you talk to sales — 9/10Who can change your chain — 7/10#2 for SpainConduit#2 globallyProvider states broad availability Managed OP Stack, Arbitrum Orbit and Agglayer CDK chains with RPC and indexing sold separately
The documented way out — 9/10Independently counted live chains — 8/10#3 for SpainAlchemy Rollups#3 globallyProvider states broad availability OP Stack, Arbitrum Orbit and ZK Stack chains sold alongside Alchemy's node and account-abstraction stack
Independently counted live chains — 6/10Who can change your chain — 3/10#4 for SpainZeeve#4 globallyProvider states broad availability Compliance-oriented managed rollups on Arbitrum Orbit, Agglayer CDK and ZK Stack, with certification claims
Who can change your chain — 6/10The documented way out — 3/10#5 for SpainCaldera#5 globallyProvider states broad availability Managed OP Stack, Arbitrum Nitro and ZK Stack chains plus the Metalayer interop network
Who can change your chain — 4/10Independently counted live chains — 3/10#6 for SpainAltLayer#6 globallyProvider states broad availability OP Stack, Arbitrum Orbit and ZK Stack rollups plus restaked-rollup AVS services
The documented way out — 3/10Independently counted live chains — 3/10#7 for SpainGelato RaaS#7 globallyProvider states broad availability Managed OP Stack, Arbitrum Orbit and ABC Stack chains bundled with paymaster, bundler and RPC services
Who can change your chain — 3/10Independently counted live chains — 2/10#8 for SpainAnkr RaaS#8 globallyProvider states broad availability No-code rollup deployment bundled with Ankr's RPC network; no independently tracked production chain
Who can change your chain — 2/10A price you can act on before you talk to sales — 1/10
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 Who can change your chain · 35% (Karnot 7/10, Conduit 2/10, Alchemy Rollups 3/10)
- Exit failure: you cannot get out at par, on time, or with what is yours.Scored by The documented way out · 20% (Karnot 4/10, Conduit 9/10, Alchemy Rollups 3/10)
- Information failure: the number is wrong or bought, or your data leaks.Scored by Independently counted live chains · 20% (Karnot 4/10, Conduit 8/10, Alchemy Rollups 6/10)
Each cell is verified against the provider's filings or the CNMV register; a gap shows "—", never an estimate.
| Provider | Taker fee in Spain | KYC tier | EUR rails | CNMV license |
|---|---|---|---|---|
| #1Karnot | — | — | — | — |
| #2Conduit | — | — | — | — |
| #3Alchemy Rollups | — | — | — | — |
| #4Zeeve | — | — | — | — |
| #5Caldera | — | — | — | — |
Source: ChainChoice provider catalog cross-referenced with the CNMV register; each fee as of its entry's latest verification (accuracy methodology).
Is using a crypto rollup-as-a-service provider legal in Spain?
Yes. Spain regulates crypto-asset service providers under MiCA (EU Regulation 2023/1114), enforced from 30 December 2024. CNMV oversees rollup-as-a-service operating in Spain; only providers authorised under MiCA may serve retail clients. Verify any provider against ESMA’s interim MiCA register.
How is crypto taxed in Spain?
Capital gains taxed in tiers: 19% up to €6,000, 21% to €50,000, 23% to €200,000, 27% to €300,000, 28% above. Form 721 declares foreign-held crypto over €50,000. Editorial summary, not tax advice: consult a qualified tax advisor in Spain before filing.
What payment methods work for buying crypto in Spain?
The most common rails for retail onramps in Spain are: SEPA, SEPA Instant, Bizum.
Are international platforms (Coinbase, Kraken, Binance) available in Spain?
Coinbase and Kraken hold MiCA authorisation valid in Spain. Binance does not: no Binance entity is on ESMA's register (read 10 November 2026); every transitional period ended by 1 July 2026, so none covers it there.