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 0x1b45985d774235e4c8cd6c42207069872efc538dcd79d42237600496911ce830. 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/5d1dbb71-153b-43c2-bb08-7af4bac77d94.json and https://artists.proofprofile.net/proofs/artist/5d1dbb71-153b-43c2-bb08-7af4bac77d94.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 0xd8a777f47bcbc51bee78c7098cacefb9ab489c1e68135612f47e3340f10ed2da. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4R2157507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e66fdb227f9098226ad4c01ef5aff3750ded12c2e20a75e0b9e87d93a0eec36. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:37Z), 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/USHM22340882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b5650d79d707ed6aacafa371912f4ffe6f99e83bc05d0c4a3c6f0c2e50193e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM22340884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ed7ee6c0d0e8356ff43d808165c596301a6bbcbe2f55ad2c35a3b94fdefc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2192094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72171d36d394633720deea05e6966c29906e04388ee9ff388563e7ce54ad30a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2192151.
PNL (feat. Dee, Fntxy, Yoga Fire, Muelas De Gallo & Ramón Cortéz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ed7ee6c0d0e8356ff43d808165c596301a6bbcbe2f55ad2c35a3b94fdefc5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2192094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72171d36d394633720deea05e6966c29906e04388ee9ff388563e7ce54ad30a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2192151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168878d9c3d33f07e72d5ea69a8652e4cab325c18879a8c86efad56471186ac1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22252153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51f9df1c4fe9cfdaed47de54c129204c7aad939d30b38d8c4628444603c6d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22252159.