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 0x042de3fbf1dc9bb27924cc46ce598ce426694a326f350a2010a99eba2db6e0c0. 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/34981a2a-e0d1-4988-9e00-70befbdb32c9.json and https://artists.proofprofile.net/proofs/artist/34981a2a-e0d1-4988-9e00-70befbdb32c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xac835d04a024e03fba6497c1b3bc090cb73881006626b22dae0d3862f76ac54c. 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/7JGrjPpKep3LJdiEHQ4N0K.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/7JGrjPpKep3LJdiEHQ4N0K.
{"copyright_id":"0x3f1e18c5ca937914edf23923f97f06fd6bffc439532a37dc7d22fc81da91ed58","isrc":"INM432300209","name":"Dj Na Rok Die - Remix","registered_at":"2026-06-24T15:12:18Z","spotify_id":"3Pd6HbYGrZlDGAR0McI6iW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e18c5ca937914edf23923f97f06fd6bffc439532a37dc7d22fc81da91ed58. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Pd6HbYGrZlDGAR0McI6iW.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/3Pd6HbYGrZlDGAR0McI6iW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb1d6a8c90cdd6ec3a3083502cce121200a6c56502f0940f6115b43a20e8d5a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4z8mFSdnmqEZbDdvkFg1v2.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/4z8mFSdnmqEZbDdvkFg1v2.