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 0xac740dcaed023df68559e5eab3335a39f1b93f57e6ca7536c869c4ade7a90ef6. 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/9fa515a1-3d8a-4d64-865d-dd3c6d09cfb0.json and https://artists.proofprofile.net/proofs/artist/9fa515a1-3d8a-4d64-865d-dd3c6d09cfb0.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 0x69c6f24a7fd413d1720834170e1e3353c8d57d271af4d14c080da324b6e3638d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3eCz15OVTzBiTZ74UGkE4g.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/3eCz15OVTzBiTZ74UGkE4g.
{"copyright_id":"0xe06a00eb94d8b999174fd4ff01bafd41f15cce02324d95bf698dae80f40aead5","isrc":"QZS652146007","name":"No I In Team","registered_at":"2026-06-19T15:46:20Z","spotify_id":"5aE4zNpLNSdsceSv3tOaDw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06a00eb94d8b999174fd4ff01bafd41f15cce02324d95bf698dae80f40aead5. 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/5aE4zNpLNSdsceSv3tOaDw.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/5aE4zNpLNSdsceSv3tOaDw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42522c5cf6c9f53fe14054ad93eed40392f6f44846307fa00e68d1a36907798b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7LNV8cyKv5jC94yfoNMEcS.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/7LNV8cyKv5jC94yfoNMEcS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc1272a911f99ffbd680131cb970de731b333b85e8d2d984afee219411bf4e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3G4ZqanCsdMScWrBRLJQOJ.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/3G4ZqanCsdMScWrBRLJQOJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032499f9163e5c5f097815949f24f50e338aef25039f132fd4dc6c00acf0fffe. 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/5cBvwieT5RLB9Ro2OOjBoI.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/5cBvwieT5RLB9Ro2OOjBoI.