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 0x99fe138c8ea99265e9e1e6d269cffe619d08318ba3dbff48e9527a8e547f8ce3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16984568-00c5-4129-82c1-5d900c88405c.json and https://artists.proofprofile.net/proofs/artist/16984568-00c5-4129-82c1-5d900c88405c.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 0x32a70af54078753114949d297b675d4ce7e1f149edd29be244a1c8531321ba60. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHZ52174949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a064b8fa07947b7c12d122dcf79c0ea6fa6fb56757c3b481a9dd191ada23bf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJV2113256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6227fe5aefddfeca417ecb9a069188ee4b587bd0b231169c963142669c90f1. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BX3GP2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71d508f107203f80b6367f3c8dcfafcb7bd49ebf30ed3c79cab84b0ac653a87. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BX3GP2400068.
Medley: Festa do Fogo / Jacó Segurou o Anjo / Desemborca o Vaso / Passa Fogo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b25ab539d4970009f3fae88973cd6b3b780b955927796a622fd16edf6b1456. 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/BX3GP2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a0ea9541fd58dd207ec761b02d5f079a4dcfda4d723e0217d2bb91804308c2. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BX3GP2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95974a3b0aff3259ea0595fbfd10d557c8d66b1bd4cadb542a4ac9c2e899224. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BX3GP2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f419502488b94549af3b45f5f951031d870b8685d314c71746f557a1e5b9e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BX3GP2500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8ccc80c82dbeede692a4256c20350fcb6f485a3f71736721775ee5b4d660df. 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/BKMSD2400001.