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 0x699b6b1ccab8f87a94109e224fb217d02f8160af3c094ad4eb01d26dc950c204. 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/21d678bd-3faf-4616-9875-5004ceac3180.json and https://artists.proofprofile.net/proofs/artist/21d678bd-3faf-4616-9875-5004ceac3180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0xcbfcbf7250dcaeab869bccb2dab5396ba0e8ca5f5417d64ab9f8c181e455971f","isrc":"NLE870811402","name":"Clublied 2008","registered_at":"2026-06-07T14:59:31Z","spotify_id":"2RJa0RFbMMuOw2AaW6G54O","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 0xcbfcbf7250dcaeab869bccb2dab5396ba0e8ca5f5417d64ab9f8c181e455971f. 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/2RJa0RFbMMuOw2AaW6G54O.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/2RJa0RFbMMuOw2AaW6G54O.
{"copyright_id":"0x23acf0a3cc3ec7d5fe2710d938291d2458d32656dac230ea8798a96a0ccaa469","isrc":"NLE871259532","name":"Wij Zijn De Boe-Boeren Van PSV","registered_at":"2026-06-18T20:14:25Z","spotify_id":"2iPh5Qav4zNMbjh7PCFCrt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23acf0a3cc3ec7d5fe2710d938291d2458d32656dac230ea8798a96a0ccaa469. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2iPh5Qav4zNMbjh7PCFCrt.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/2iPh5Qav4zNMbjh7PCFCrt.