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 0x34ab0c866b98124143df4e386fcbfe325779e5d6c5d69a9785210fe908f648e0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1545316-35b6-48c9-89ea-45c1707eb2a9.json and https://artists.proofprofile.net/proofs/artist/b1545316-35b6-48c9-89ea-45c1707eb2a9.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 0x17a8d819aaa414d0cb5580fbcf258888231b55fcc99331b8ca415361981b0de3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BRWNK1200758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe9d6702535e651011f044e3ae7d78a7e314463a002cefc9a21c22f26b7bd22. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:16Z), 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/BRWNK1200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71eab42442b31868b4d6e7c9966676375ae57d821ae927e390c3f62029cff4c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRWNK1200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f41cd00c9fe0d246153b8eb90fa9d2d66a9749ea4ea8661385e74470a4bad. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRWNK1200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe45743842670d0363cbee7e25d13c48195529ec60971aa1ab7915e0586da10. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRWNK1200767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da02925a6871cb7d424b245f542e5662c20672cc5ee7e5ec68bd6417c6450ce. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:52Z), 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/BRWNK1200773.
É Sucesso É Moral! Na Encaixadinha: Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a7dd0c28f177d8511c917497ea31d2673a5191a8e6274f95c7456bf0f4201b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRNO61000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455b9de56f538a48d2e40104e01f0dfaca4f9391da1bb51045be33398007605. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRNO61000226.