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 0x052a7deb0f5609692d72112860012557cedec1f07c8c5149c42a7878deda06a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea3b3159-2b1a-48d5-aec1-74b270b2654d.json and https://artists.proofprofile.net/proofs/artist/ea3b3159-2b1a-48d5-aec1-74b270b2654d.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 0x938df9cf0971346e2a1194000b3a6f6d509e99259ede1e36b80d0a13f4198718. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2K3qTM3Tbm7qU9vNS8dGfS.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/2K3qTM3Tbm7qU9vNS8dGfS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c442690b276409ac0c858aa0f2449ac2efdc34c230423f7d1c948f1e55231b. 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/26v373nBtmuwvNorUGOxi8.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/26v373nBtmuwvNorUGOxi8.
{"copyright_id":"0x56487a15a8d14e020c4631eb6402ba372c01b5ef1b40afeb2be3ce5e04c7ad21","isrc":"QM24S1926134","name":"Boss (Kai Wachi Remix)","registered_at":"2026-06-08T21:24:05Z","spotify_id":"0bG9fz0amwQLiccjercjvN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56487a15a8d14e020c4631eb6402ba372c01b5ef1b40afeb2be3ce5e04c7ad21. 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/0bG9fz0amwQLiccjercjvN.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/0bG9fz0amwQLiccjercjvN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938df9cf0971346e2a1194000b3a6f6d509e99259ede1e36b80d0a13f4198718. 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/0qMNmGLTWRXxTgBl02wsCm.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/0qMNmGLTWRXxTgBl02wsCm.
{"copyright_id":"0x56487a15a8d14e020c4631eb6402ba372c01b5ef1b40afeb2be3ce5e04c7ad21","isrc":"QM24S1926134","name":"Boss - Kai Wachi Remix","registered_at":"2026-06-08T21:24:05Z","spotify_id":"1WKTw0ATF6ty6kmPRkBYcb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56487a15a8d14e020c4631eb6402ba372c01b5ef1b40afeb2be3ce5e04c7ad21. 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/1WKTw0ATF6ty6kmPRkBYcb.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/1WKTw0ATF6ty6kmPRkBYcb.
{"copyright_id":"0x89380ae0ecfce0912ec76ba08efde4c5946f31708473ece3752983580a8fdc5e","isrc":"QZW9L2457292","name":"Boss (Kill Safari Remix)","registered_at":"2026-06-06T17:05:45Z","spotify_id":"5UhX7ZL6inBOGtTlPQYwXF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89380ae0ecfce0912ec76ba08efde4c5946f31708473ece3752983580a8fdc5e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5UhX7ZL6inBOGtTlPQYwXF.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/5UhX7ZL6inBOGtTlPQYwXF.