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 0xa2fc984068c448257d3030cd9eca4f2a4a1437478214330b3bc7577cdf43ff0f. 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/cd89c220-a389-4bd8-af58-f123f70922a8.json and https://artists.proofprofile.net/proofs/artist/cd89c220-a389-4bd8-af58-f123f70922a8.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 0x63838e55c0355e9833dbdb336043ed2a6e369f3d02be3a2567a86a4e8abc6713. 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/1Yao6mD2a33nDYvB7JkGfz.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/1Yao6mD2a33nDYvB7JkGfz.
Collage: An Electronic Tribute to Timeless Israeli Music
{"copyright_id":"0x61c76c12e7e997c5bfa3f30f8221edfee587a6dca30a76e356d204d0dd943547","isrc":"IL1041905301","name":"Pa'amonim - Album Mix","registered_at":"2026-06-27T08:26:59Z","spotify_id":"3nUIRPZ7K6CJbHpWzQTdmW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c76c12e7e997c5bfa3f30f8221edfee587a6dca30a76e356d204d0dd943547. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3nUIRPZ7K6CJbHpWzQTdmW.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/3nUIRPZ7K6CJbHpWzQTdmW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0c74c0f00155f65a4941879b16314236623ae732525bdee9e2dd758e6ed734. 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/6nwWOBlg88oxXMTlJtKCMg.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/6nwWOBlg88oxXMTlJtKCMg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c70b09e48e5b83faf8221c1342bd216599e7a5b3e0e0714342c52afc8434ec. 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/0u2q050LYI3nCru9J3lii3.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/0u2q050LYI3nCru9J3lii3.