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 0xaeb87c27b7708fcb336100eff5be5c5aa76a5420fd14b2f6b4b3813de2f4c09a. 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/981377e3-6d19-452e-af82-6fb788f7d27b.json and https://artists.proofprofile.net/proofs/artist/981377e3-6d19-452e-af82-6fb788f7d27b.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 0x83f3be9c9d2f77648b5d1641fe111829d981e514471a2655fae35828d7cddd9d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/00iKAhJMl5YBYfJRCmURg8.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/00iKAhJMl5YBYfJRCmURg8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb427153d25da5a9e4e83662e5c7f2cb96bc90b633e6dedd21eaa8a758d624. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1BiFqj7Q6ySQVFfzOVod8J.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/1BiFqj7Q6ySQVFfzOVod8J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f3be9c9d2f77648b5d1641fe111829d981e514471a2655fae35828d7cddd9d. 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/35cauUD4PXwU2jjafDe4Sc.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/35cauUD4PXwU2jjafDe4Sc.
{"copyright_id":"0x1c1cba208e298c67bdee637dcda1c5944d4b62da2e54906c5504cc93c3e22c8d","isrc":"IEFJB1100569","name":"The Galway Girl","registered_at":"2026-06-04T10:40:36Z","spotify_id":"5aaXUnZTijPOnR9RTCAqoM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1cba208e298c67bdee637dcda1c5944d4b62da2e54906c5504cc93c3e22c8d. 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/5aaXUnZTijPOnR9RTCAqoM.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/5aaXUnZTijPOnR9RTCAqoM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d09ee88629cd9589b9a3f249e79dcab7696878c5a903024e17f85cc4079e65. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6yOZBrcRD1u0azibRGS0fH.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/6yOZBrcRD1u0azibRGS0fH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51565d8c8473d8de16b9613aa565c009061c0918e304053980a5cf0d6f60869e. 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/4OGs5jaLVq1VaCsUkj0w6I.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/4OGs5jaLVq1VaCsUkj0w6I.
{"copyright_id":"0xe79e1e5b4c90212b2ab9e1ef3decd1434f80bb07e87f8d7d587df1f48959f6ba","isrc":"IEFJB1100143","name":"The Galway Girl - Live","registered_at":"2026-06-08T04:48:33Z","spotify_id":"6qLZO4pdSobABDhItGMD8h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79e1e5b4c90212b2ab9e1ef3decd1434f80bb07e87f8d7d587df1f48959f6ba. 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/6qLZO4pdSobABDhItGMD8h.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/6qLZO4pdSobABDhItGMD8h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d09ee88629cd9589b9a3f249e79dcab7696878c5a903024e17f85cc4079e65. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7GzS3QoxLpG9pH0ORs6YuT.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/7GzS3QoxLpG9pH0ORs6YuT.