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 0x0bf5f00ca99fdf631c4e35975372ae41c15fb6822fd1ee110d2f67f43f472e55. 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/d96089e0-0aff-4e40-aa9a-bdc4d43d9830.json and https://artists.proofprofile.net/proofs/artist/d96089e0-0aff-4e40-aa9a-bdc4d43d9830.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x9481f03f6d45fbe1e55b269c9cef144e2be3dd1469c1ee956d430f72961f273b","isrc":"QZN882501916","name":"Cayeron los Pesos","registered_at":"2026-06-05T12:24:30Z","spotify_id":"5nPEVzKZbQf6cHiK8atZrx","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 0x9481f03f6d45fbe1e55b269c9cef144e2be3dd1469c1ee956d430f72961f273b. 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/5nPEVzKZbQf6cHiK8atZrx.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/5nPEVzKZbQf6cHiK8atZrx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba113bcce3889223e79503d9344acc08a1fb2218f1533e060c408fce0ea6a5. 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/1UFb9AetD6I9cJA4Rc27Ln.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/1UFb9AetD6I9cJA4Rc27Ln.
{"copyright_id":"0x1fe9e4fe60e696f3162eef533da54802cde703a3f97f74e51e99293f33d9fb50","isrc":"QZHZ41970477","name":"Cabañita Sin Señal - Remix","registered_at":"2026-06-25T20:53:05Z","spotify_id":"2QNyLitXyFyBxnAT1wfuzc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe9e4fe60e696f3162eef533da54802cde703a3f97f74e51e99293f33d9fb50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2QNyLitXyFyBxnAT1wfuzc.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/2QNyLitXyFyBxnAT1wfuzc.