1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d7cb7118a1aed9165d99caf7639335bd82f40400b3594769d2afbe18721872. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86659f02-28e7-4ad7-96f0-58e79d817200.json and https://artists.proofprofile.net/proofs/artist/86659f02-28e7-4ad7-96f0-58e79d817200.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Changes Wrought By the Recurring Use of Tools