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 0xaf2d64645e9b1518afd4ce186ffa90db50637bd6fb37f3b8c8feff360ea18305. 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/10e140dc-d390-4ccf-9d0d-099f4c7fd04d.json and https://artists.proofprofile.net/proofs/artist/10e140dc-d390-4ccf-9d0d-099f4c7fd04d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x9c66ed3fa9a1fa9c37fbfbe6114876acbece2086f075825fb8f94c1b1369f696","isrc":"QZQMB2105473","name":"Me Quebré","registered_at":"2026-06-21T08:45:20Z","spotify_id":"6nnmBbMt3IvoVvMaIqowz4","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 0x9c66ed3fa9a1fa9c37fbfbe6114876acbece2086f075825fb8f94c1b1369f696. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nnmBbMt3IvoVvMaIqowz4.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/6nnmBbMt3IvoVvMaIqowz4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8785891e417a624eb704e650a0d7d557ce0f0522e38b1886efb4c1524047686e. 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/4hd908eWAEEswwpWE42sxv.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/4hd908eWAEEswwpWE42sxv.
{"copyright_id":"0x23db0c5cb2b1e28f3a4687c49e79deee480efe8d8dd873f25da33704ac969e83","isrc":"QT2HF2400285","name":"Toca Volver A La Peda","registered_at":"2026-06-09T10:15:30Z","spotify_id":"2Pl79w6sB1VnpXMW9XmLkm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db0c5cb2b1e28f3a4687c49e79deee480efe8d8dd873f25da33704ac969e83. 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/2Pl79w6sB1VnpXMW9XmLkm.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/2Pl79w6sB1VnpXMW9XmLkm.