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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe6d07e8689600a50e7e283b09a57e380e4f3f6a22f541cd37d015d9f8cbc5. 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/7e041920-2afc-4249-87de-0e55e2650c88.json and https://artists.proofprofile.net/proofs/artist/7e041920-2afc-4249-87de-0e55e2650c88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xad74a0c7fe523ad44c798dbd8a4468c9ab326e2b89ddd3c8b102e023334e570e","isrc":"QZNWR2477715","name":"Art Piece","registered_at":"2026-06-05T10:13:10Z","spotify_id":"5CVtmqbmbRVp72klGvaqDj","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad74a0c7fe523ad44c798dbd8a4468c9ab326e2b89ddd3c8b102e023334e570e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5CVtmqbmbRVp72klGvaqDj.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5CVtmqbmbRVp72klGvaqDj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe03931ade9b95d78db92962136ea8c74852672446b989101d5305aae453cb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0JgdxcpZpmkFnHmbS5rzI6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0JgdxcpZpmkFnHmbS5rzI6.