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 0x4d250b68944041c5ad35171c369ecf2e1902709eb947b854efa1df5b4bd1a824. 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/c473891d-deb1-4655-8713-c4a5ce05220e.json and https://artists.proofprofile.net/proofs/artist/c473891d-deb1-4655-8713-c4a5ce05220e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x05b9c075099d70fbb71987a361eaa4ee60eff39348f473211a287a3402002dfd. 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/3REYHkSzYJlyDh6unKRDNi.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/3REYHkSzYJlyDh6unKRDNi.
{"copyright_id":"0x5ad1b5bd6362a9c178ecaf40adb1daef8e4ed289a9debac6971ec0db3e32a52a","isrc":"JPVI02102504","name":"Konoyuki ni Magirete","registered_at":"2026-06-28T20:48:56Z","spotify_id":"0385ts4QnGGC7W2IiLG4uO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad1b5bd6362a9c178ecaf40adb1daef8e4ed289a9debac6971ec0db3e32a52a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0385ts4QnGGC7W2IiLG4uO.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/0385ts4QnGGC7W2IiLG4uO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5715aabbdebf602ed667f3fdce448672b41ebe496477f039fb37446940f319. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4pjf9wEcyWT40h4E2EW3q4.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/4pjf9wEcyWT40h4E2EW3q4.