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 0x3266b399c6ddb16258242c3c5c64e1e6e33f42f9c576078f9ec37e3fb828789f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b4d609c-407a-49b0-b521-bef0152b8d3d.json and https://artists.proofprofile.net/proofs/artist/7b4d609c-407a-49b0-b521-bef0152b8d3d.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 0x15d0762ad970ec83bf2aa5a9cff0914547edb5d8035bf14f54b1773104244b2a. 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/1HnXJFfslxvXgS8ibSrp3s.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/1HnXJFfslxvXgS8ibSrp3s.
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{"copyright_id":"0x1cf8b5339f961821bd23ce4c0dd74eed7f7679b13cdf479e8eeba572cd934d83","isrc":"QMCE71300625","name":"Why Do You Leave Us?","registered_at":"2026-06-10T02:02:35Z","spotify_id":"4i0K2LEKNzsLqtkicDIYdD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf8b5339f961821bd23ce4c0dd74eed7f7679b13cdf479e8eeba572cd934d83. 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/4i0K2LEKNzsLqtkicDIYdD.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/4i0K2LEKNzsLqtkicDIYdD.