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 0x2bbb24ab646dab9f1a0d39f7112e55457de928ccf6cc21678e43f7763ba92e75. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee710c6e-bc34-41d4-8770-0493e6743e67.json and https://artists.proofprofile.net/proofs/artist/ee710c6e-bc34-41d4-8770-0493e6743e67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa76814d4fd49a5edf43f483cdd60b595a4f196f0239ad5e0d044d1a01e0f3e9e","isrc":"FID8M2400022","name":"Lazy Afternoon","registered_at":"2026-06-28T19:51:22Z","spotify_id":"0SiC6la4OMY9Fjr2L5HPfc","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 0xa76814d4fd49a5edf43f483cdd60b595a4f196f0239ad5e0d044d1a01e0f3e9e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0SiC6la4OMY9Fjr2L5HPfc.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/0SiC6la4OMY9Fjr2L5HPfc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad516d21908461233cca36b31e0b308f44922f2b6bdee29d5318c5e9c8a4f223. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5YlrMIlECFwDeRZdMRu3pp.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/5YlrMIlECFwDeRZdMRu3pp.
{"copyright_id":"0xad516d21908461233cca36b31e0b308f44922f2b6bdee29d5318c5e9c8a4f223","isrc":"FID8M2400034","name":"New Beginning","registered_at":"2026-06-10T18:53:18Z","spotify_id":"5HtXxciZroICbfXwUoTaUF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad516d21908461233cca36b31e0b308f44922f2b6bdee29d5318c5e9c8a4f223. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5HtXxciZroICbfXwUoTaUF.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/5HtXxciZroICbfXwUoTaUF.