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 0x4c52560e82c881de79325d1c00b9a93631a549c8ca4491113cfbb769f858ce03. 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/161b3f2a-2b42-4ba3-b63f-03fc3a68a9fb.json and https://artists.proofprofile.net/proofs/artist/161b3f2a-2b42-4ba3-b63f-03fc3a68a9fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1ef6eba53690dc6f263f50af811be4c1514c75ef639926acfae31e83983074b6","isrc":"FR6V81021621","name":"Soul Storm Comin'","registered_at":"2026-06-29T11:07:40Z","spotify_id":"2NUIEFkhOdcmYrwnGmfUr4","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 0x1ef6eba53690dc6f263f50af811be4c1514c75ef639926acfae31e83983074b6. 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/2NUIEFkhOdcmYrwnGmfUr4.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/2NUIEFkhOdcmYrwnGmfUr4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b5e0b470b7ec445a597b7c5c8dd32d46940c2c26c058f64b6974f73c035b. 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/1bsoRllB5EqStGk4TUxUcF.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/1bsoRllB5EqStGk4TUxUcF.
Damn Good Run (The Best of Chris Jones & Steve Baker)
{"copyright_id":"0x2577cf692def50a07d48478ff78833398f7a62cb24ef5da6f0bf93df9b09cadf","isrc":"DEC259660270","name":"The Traveller","registered_at":"2026-06-09T19:49:17Z","spotify_id":"2qOnxGwiqJYninhoQ7weWz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2577cf692def50a07d48478ff78833398f7a62cb24ef5da6f0bf93df9b09cadf. 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/2qOnxGwiqJYninhoQ7weWz.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/2qOnxGwiqJYninhoQ7weWz.
{"copyright_id":"0xfd63c4f86bf9fc4eb44cef7b1954e0a191cadefc714128f4dcfcd49f3c067d7f","isrc":"DEC259660280","name":"So Long","registered_at":"2026-06-11T03:12:34Z","spotify_id":"0pfPhjNxGtvZPmdq4YRIGK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63c4f86bf9fc4eb44cef7b1954e0a191cadefc714128f4dcfcd49f3c067d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0pfPhjNxGtvZPmdq4YRIGK.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/0pfPhjNxGtvZPmdq4YRIGK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb6ce4929f3e0781f9962d97ee5e1eada76d60289e07ea46512f3a065933ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nXueNr5AUnYMXudlTw28r.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/6nXueNr5AUnYMXudlTw28r.