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 0xb53b0c3132c5dc456eeedbc5284e075343f5dc1c92579a74d6e7d08a2866415e. 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/4381b361-476c-4a43-b101-a55ae380056a.json and https://artists.proofprofile.net/proofs/artist/4381b361-476c-4a43-b101-a55ae380056a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6242951f43c03479457a9777cf7df9900d03fc6de08adb9f9f47619924333bcc","isrc":"AUBEC2184315","name":"iridescent ghosts","registered_at":"2026-06-11T14:49:16Z","spotify_id":"2PrnioaOdBHfzPiTG9zWKC","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 0x6242951f43c03479457a9777cf7df9900d03fc6de08adb9f9f47619924333bcc. 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/2PrnioaOdBHfzPiTG9zWKC.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/2PrnioaOdBHfzPiTG9zWKC.
{"copyright_id":"0x3c1aab994a6bfe3a001ac40c938b446804af2e988f7b6d1515578e08f90278b5","isrc":"QT2VB2480901","name":"Thank You For That","registered_at":"2026-06-29T09:11:11Z","spotify_id":"1YW2GaIHMqOHG5eqaYPJCQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1aab994a6bfe3a001ac40c938b446804af2e988f7b6d1515578e08f90278b5. 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/1YW2GaIHMqOHG5eqaYPJCQ.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/1YW2GaIHMqOHG5eqaYPJCQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6242951f43c03479457a9777cf7df9900d03fc6de08adb9f9f47619924333bcc. 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/40eBP90ZYFuCNhmg83QPv5.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/40eBP90ZYFuCNhmg83QPv5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92cb7d215bd9a5aa94276ec980d9614bb792c1dcd777298be4abc2dd7cf4064. 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/37YNRTW6PaAVYN1fM767yL.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/37YNRTW6PaAVYN1fM767yL.