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 0xfca89cabd404eb4454c76d035e0db40471bb0794c2352d07438f77799a61581a. 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/5eb360e4-60cf-443b-b6c4-6b0003234997.json and https://artists.proofprofile.net/proofs/artist/5eb360e4-60cf-443b-b6c4-6b0003234997.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 0xe6f5971b5b535ae4c09028c2aa835d59b65962ef81246dd74174ecb9c3334d32. 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/7HY7QNPBzTEbogs1YAOTyX.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/7HY7QNPBzTEbogs1YAOTyX.
{"copyright_id":"0x0242c10f818f4471d905c9ea4b1cb82bcad42aeccc44d67f61c1e01f71fd6e67","isrc":"CA5KR2497627","name":"LYUBOV FUNK","registered_at":"2026-06-04T12:08:06Z","spotify_id":"3ZS6NScXjMmscme3vpV14M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0242c10f818f4471d905c9ea4b1cb82bcad42aeccc44d67f61c1e01f71fd6e67. 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/3ZS6NScXjMmscme3vpV14M.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/3ZS6NScXjMmscme3vpV14M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bfae0849f44ece3fc877ae3b772fc76d32a57047d11dc0c5b9abc1c5e5fabd. 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/45yTKGUkycyULOGwG4LOiq.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/45yTKGUkycyULOGwG4LOiq.
{"copyright_id":"0xc5dc880f14f630bbf3d057270a12468ee000b9c02705cac77b1ce9a4139d3bf6","isrc":"CA5KR2497637","name":"LYUBOV FUNK - Sped Up","registered_at":"2026-06-08T14:12:55Z","spotify_id":"0bfZbMPyVYCyNlBLZLv3Vc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dc880f14f630bbf3d057270a12468ee000b9c02705cac77b1ce9a4139d3bf6. 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/0bfZbMPyVYCyNlBLZLv3Vc.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/0bfZbMPyVYCyNlBLZLv3Vc.
{"copyright_id":"0xc4adaf595ca93b91441639ca586292fbdd4352e31c96603a6fbcd4e9bb53ba98","isrc":"CA5KR2497639","name":"NASTUPITA - Sped Up","registered_at":"2026-06-10T20:56:38Z","spotify_id":"3F7JfiMKm6O1uaCjo9HKdX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4adaf595ca93b91441639ca586292fbdd4352e31c96603a6fbcd4e9bb53ba98. 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/3F7JfiMKm6O1uaCjo9HKdX.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/3F7JfiMKm6O1uaCjo9HKdX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e3a08faa35938335f1de7e0731c4ea180e510ea69397c8f94ddd9ec60915e8. 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/7IylYhXEj5VGs2wt73v12j.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/7IylYhXEj5VGs2wt73v12j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf94e882740c01f87d119ff4fa2397f799233626ad0f0c6234991f70e0ab80a. 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/5CcVtztkMxreOie5pLGryr.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/5CcVtztkMxreOie5pLGryr.