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 0x403f8bd8bf8c5720d3c92a9c595311fadae527ceb9144083a9efc2849eb81004. 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/c4bfa8b9-2193-4ed8-bb83-e5db21f64392.json and https://artists.proofprofile.net/proofs/artist/c4bfa8b9-2193-4ed8-bb83-e5db21f64392.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d","isrc":"QZTAX2474191","name":"Hold Tight","registered_at":"2026-06-28T19:32:24Z","spotify_id":"1nQA9YTulXKKA2dtFBvmHa","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 0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1nQA9YTulXKKA2dtFBvmHa.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/1nQA9YTulXKKA2dtFBvmHa.
{"copyright_id":"0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d","isrc":"QZTAX2474191","name":"Hold Tight","registered_at":"2026-06-28T19:32:24Z","spotify_id":"2EoV3jS94WaHsXCiZdy3Pf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d. 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/2EoV3jS94WaHsXCiZdy3Pf.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/2EoV3jS94WaHsXCiZdy3Pf.