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 0x143f754610bf04ef61d22f5895ceed41470b1d7c6c3c4331f7676c30544f77c4. 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/eaaf675c-1e1b-426a-93b2-29de04f5274d.json and https://artists.proofprofile.net/proofs/artist/eaaf675c-1e1b-426a-93b2-29de04f5274d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
サンタクロース(LIVE@2003.09.20 SHIBUYA CLUB QUATTRO)
{"copyright_id":"0x4f9a745212728d3b9f7b63ae1fde3f8541a4a9e34cffc41dee14ddab819e66df","isrc":"JPF350800131","name":"My Favorite Song","registered_at":"2026-06-29T01:19:18Z","spotify_id":"2FOHAfiop1FY6dxQagHL7i","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 0x4f9a745212728d3b9f7b63ae1fde3f8541a4a9e34cffc41dee14ddab819e66df. 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/2FOHAfiop1FY6dxQagHL7i.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/2FOHAfiop1FY6dxQagHL7i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338b1f39265c0f7efe0e50294830050ffe8b8caf8e05537bcbcae0ca8d6df66b. 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/1X47w2vOVMXF3FwyHDl5ix.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/1X47w2vOVMXF3FwyHDl5ix.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6e140b8c1ebdc3d553d9b635942f5fd357727a1ef1cbc116d73ddc737ae700. 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/15kd2ddeyBcRk4yTvt86fS.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/15kd2ddeyBcRk4yTvt86fS.