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 0xbbf93edc178afda0ce2289efdbfdf6cf4bee367d86ac836d5e34fb75218f2292. 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/91571e14-fe11-4b1d-a737-40203bc9a5cc.json and https://artists.proofprofile.net/proofs/artist/91571e14-fe11-4b1d-a737-40203bc9a5cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa2fb883dcb8785e9f2bf2c6f973eec9b5c6d120090e9f6c37a8258401c4037bb","isrc":"USUM72313624","name":"How's It Gonna End?","registered_at":"2026-06-28T20:15:32Z","spotify_id":"1RudaE3dzjgB1NLtQNchhW","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 0xa2fb883dcb8785e9f2bf2c6f973eec9b5c6d120090e9f6c37a8258401c4037bb. 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/1RudaE3dzjgB1NLtQNchhW.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/1RudaE3dzjgB1NLtQNchhW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07974be3e0832ed81aaa27668f46f292ba98ed80f2d83abec3030dd5936f269b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5GIsnSmSyFM8dI3e4dP1G5.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/5GIsnSmSyFM8dI3e4dP1G5.
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