1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x2911af80a2a3b858b3ad60a1f6d3c16b2a98eb6d998f3001cf7ac35c33d7b36a. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b878358e-f346-4c4d-8e8c-84dae563b2a0.json and https://artists.proofprofile.net/proofs/artist/b878358e-f346-4c4d-8e8c-84dae563b2a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78f67a46a0108d6f994c7f70a9797c64a811ec38d4278019b768ff47a80496. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:31:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1995826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace98035542b19872578e6741e346ab27144e1f5c68c686c9a684da600f91caa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:45:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1910849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a4b1c96026daf7f0cbbb11a8e014d71f1366d80cd1805796c9ec2da0b70119. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1910850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c229baea745efef531cab7cc1b977c8df535b5eb7f5ad7be6d5f52185d3ef4c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1910851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa414247511a31d8f473eee7c5e2249145cc2efb5ce40fa458ff5984193aaaf1a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1910854.
No Le Des Segundas Oportunidades a Brauni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d3cf22888e90d82349f73832bacb95ffefe8ad30f20bfe3ffd89f9b37c2e24. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2443742.