Service with a Smile is a novel by P. G. Wodehouse, first published in the United States on 15 October 1961 by Simon & Schuster, Inc., New York, and in the United Kingdom on 17 August 1962 by Herbert
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedad747b564597ac14fde867f6644ee8dda75d31083451841a53602ddb2a445e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ab3b454-3bd5-40a3-9514-40cd985f27de.json and https://artists.proofprofile.net/proofs/artist/8ab3b454-3bd5-40a3-9514-40cd985f27de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).