SHA-
flat-
Use when an agent must prove two payloads are the same byte for byte, or sign an API request: SHA-256 of any string or hex payload, returned as hex and as base64, which are the two forms signatures and content addresses are written in. Do not use for anything Ethereum hashes: the chain uses Keccak-256 (/v1/util/keccak256), which gives a different digest. No API key, no account.
Live
Last successful check: 25 Oct 2026, 21:10 UTC.
- answered, last 24 hours
- 100%
- answered, last 30 days
- 100%
6 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments
How addrbook checks →Connect
https:x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.
Who's behind it
- Listed by
- x402 Bazaarlast seen UTC
- Wallets named
- 0xc210ea7d5692a6401adf25bbcb7acde9cdb7e9ffnamed by x402 Bazaar
- Listed since
Payments
- different wallets paid it, last 30 days
- 6
- paid calls, last 30 days
- 7
- last paid call (UTC)
As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.
Its x402 endpoints have not listed a payment option addrbook could read yet.
Checks by endpoint
| Host | Protocol | State | Last checked (UTC) | Last answered (UTC) | 24 hours | 30 days | Tools |
|---|---|---|---|---|---|---|---|
| flat- | x402 | Live | 100% | 100% | — |
Also listed as
Other entries that share an endpoint with this one.