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 0x6320c77d4cdef1492a0662c0ed975eb431443bf61d6490dff8c93e15143637f5. 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/a02f616e-10bd-43a6-9d46-527e4c9fa26d.json and https://artists.proofprofile.net/proofs/artist/a02f616e-10bd-43a6-9d46-527e4c9fa26d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xdb3ed14dcac14df3bd9a891db1922c40b3d07cd666aee406c1fdd6b5ecadff28","isrc":"QZFYX2009844","name":"Someone New","registered_at":"2026-06-29T04:26:19Z","spotify_id":"0QRC4Zbq2c4HlrOOCvH4cS","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 0xdb3ed14dcac14df3bd9a891db1922c40b3d07cd666aee406c1fdd6b5ecadff28. 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/0QRC4Zbq2c4HlrOOCvH4cS.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/0QRC4Zbq2c4HlrOOCvH4cS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b1dec83e0c5c5a48ee823280b588b2786b94e0975cc29fc20815b0123c9f4. 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/3HtkfalMTXdsXtMAth2LGC.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/3HtkfalMTXdsXtMAth2LGC.