Best crypto rollup-as-a-service in Japan
Karnot ranks highest in ChainChoice’s published rollup-as-a-service ranking among the providers that list Japan. Among the highest crypto tax rates globally (up to 55%). Reform proposals to move to a flat 20% are pending.
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 Japan residents use in November 2026?
Karnot ranks highest in ChainChoice’s published rollup-as-a-service ranking among the providers that list Japan. The order is the published ranking itself; providers whose terms exclude Japan are removed. Check authorisation with FSA before depositing.
- Japan residents holding capital in JPY
- Users who need FSA-aligned compliance and audit-grade reporting
- Buy-and-hold profiles benefiting from Japan'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 FSA does not currently authorise
General guidance for Japan: 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 Japan
In ChainChoice’s published ranking order, from this category’s 8 providers: those whose terms exclude Japan are removed; naming Japan 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 JapanKarnot#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 JapanConduit#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 JapanAlchemy 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 JapanZeeve#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 JapanCaldera#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 JapanAltLayer#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 JapanGelato 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 JapanAnkr 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
No referral fee in your country: this link opens the provider’s own site.
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 FSA register; a gap shows "—", never an estimate.
| Provider | Taker fee in Japan | KYC tier | JPY rails | FSA license |
|---|---|---|---|---|
| #1Karnot | — | — | — | — |
| #2Conduit | — | — | — | — |
| #3Alchemy Rollups | — | — | — | — |
| #4Zeeve | — | — | — | — |
| #5Caldera | — | — | — | — |
Source: ChainChoice provider catalog cross-referenced with the FSA register; each fee as of its entry's latest verification (accuracy methodology).
Is using a crypto rollup-as-a-service provider legal in Japan?
Yes. Crypto rollup-as-a-service are regulated in Japan by Financial Services Agency (FSA). Always verify a platform's licensing status with FSA before transacting.
How is crypto taxed in Japan?
Crypto gains taxed as miscellaneous income at progressive rates up to 55% (national + local). Losses cannot offset other income categories. Editorial summary, not tax advice: consult a qualified tax advisor in Japan before filing.
What payment methods work for buying crypto in Japan?
The most common rails for retail onramps in Japan are: Wire, Convenience Store, Pay-easy.
Are international platforms (Coinbase, Kraken, Binance) available in Japan?
Availability varies by platform and product. Japan has its own licensing regime under FSA, and not every global platform is registered. The shortlist above removes platforms whose terms exclude Japan; the chip on each row says whether availability is verified, listed or unstated.