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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ee549c1f70a93244c4e28b1a2783a8478c5152f06cddee8a5a52eb2d3b6f24. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef7c9f68-9106-46aa-8a5b-400d4e7ebf7c.json and https://artists.proofprofile.net/proofs/artist/ef7c9f68-9106-46aa-8a5b-400d4e7ebf7c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c00f1f39f6d739386cd51fd2a6e89af05f575d412ca55442a38739bc3e9ace0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRMCA7200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b24f64613c4ba52b676fe7ff716a9c3eafa6378325d415239f5147cf6ad26f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRMCA7200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e27af3e3551778002f469d18e75d017bdce1f5b3b7254e72bd9aa39fef27182. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/BRMCA7200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a7122eca5d748992132332014169891083a1bcea1b56e2de9acf1a79a8e52. 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/BRMCA7200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d35d02b900a7f7722cfaf4dad4bf03dbf3714f1217f2609d679ab03b5cd278. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BRMCA7200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce6c3d83cf76ee424dceb1bc62d58f7100ba832cf4458c150cf7c2ef3d33a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRMCA0500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb3d9d27bfdf31cf1aaf7ab2939abeb12bdb24125308aa2edd19dfa7ff61ad4. 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/BRPGD7600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31c99b0df1fb6454d892602ab14ac430672e6129614defab2df6dcafcfe8deb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:25Z), 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/BRMCA0500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fb44c6e3defdc6bd0ee443fe472ab09a567ff34ac4320aaf3463dc26ee2e68. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:02Z), 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/BRI9C1800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be8f9434d9fac244bd81556a38803d86b80b8639171eecbe6855c2329ccde7. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/BRAPI0100663.
25 Anos Não São 25 Dias, Edição Histórica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de22ad9e99199fe1906bb9beba510f90070eafeabec12d89c62636a6e825e20. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BRAPI1300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39375dbb1db6959e91a0784788b2fdf8b71f1153283233af478d9562fed31c00. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRAPI1300345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f18767b452167a778a00df180a7026aacd052bec351a1da589d879b6d86873b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRAPI1300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af424d3c9dd47d91dab08c8cbfbbc0f1dc104077da925025f09958d69ce7a5c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXQGP1900008.
Tempo - 50 Anos do Quinteto Violado Show Comemorativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0724c852b3a1a670ca4c1a062e5042b54fbbbfb1beabb49f23057d456be6e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCP2X2400117.