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 0x115a28824e6102a2aa4dc97a8f0565edee0bb5c4df49c66c59007160dba1cc51. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/208a982d-e0fc-4686-a561-3baf998b35d4.json and https://artists.proofprofile.net/proofs/artist/208a982d-e0fc-4686-a561-3baf998b35d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe77633b678be43a6cbfe229ecc002f0bfa72ffbdafb75fa694bd2b38207fd44f","isrc":"CA5KR2505484","name":"PARTY ALL NIGHT LONG","registered_at":"2026-06-05T17:58:28Z","spotify_id":"1Jj5R6v0TGQHED0dG1SmZp","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 0xe77633b678be43a6cbfe229ecc002f0bfa72ffbdafb75fa694bd2b38207fd44f. 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/1Jj5R6v0TGQHED0dG1SmZp.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/1Jj5R6v0TGQHED0dG1SmZp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc14c5e60c01c870265ce400598c6ac7a258ae6fad183852251f7a7793b364. 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/0prXnQXcR4q2vjaLlLVCv5.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/0prXnQXcR4q2vjaLlLVCv5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cdd84aee92ca5570aed8bb2bf09091de6fb19306e7c374600738e92445c3ac. 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/2iubWn04OQ2njE0sUQE5Np.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/2iubWn04OQ2njE0sUQE5Np.