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 0x1fe3352c5243bb6aeeb6aa041ca34ba5c3061111819ff76fff1346e61baa05b7. 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/a8d4fe0c-c9c0-4332-a1dc-ab8cc860c6df.json and https://artists.proofprofile.net/proofs/artist/a8d4fe0c-c9c0-4332-a1dc-ab8cc860c6df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf9e13c459b5d442cb3a49a9d0e29795ff1fddea780e45f9b7e2ec8fc446e5178","isrc":"QMDA71857780","name":"Belong on the Bed","registered_at":"2026-06-28T20:26:39Z","spotify_id":"4JurxkK7kqFT7cUenB7y3f","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 0xf9e13c459b5d442cb3a49a9d0e29795ff1fddea780e45f9b7e2ec8fc446e5178. 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/4JurxkK7kqFT7cUenB7y3f.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/4JurxkK7kqFT7cUenB7y3f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7891addd4a4f539ae375a29470b6331fd7a17e86b28abfb24e1fdf88a17e381. 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/2PQyipoCmjkYo1Lk1UAWWh.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/2PQyipoCmjkYo1Lk1UAWWh.