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 0x4a035f734d7672df47bfc75bc36fd33f31c1c8103095c8308f4157b0b58e57a3. 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/6a1379d7-751a-417d-acff-47fcc93ad3d5.json and https://artists.proofprofile.net/proofs/artist/6a1379d7-751a-417d-acff-47fcc93ad3d5.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 0x45b275733fa0e6ee789db15f159a9f0722b11348da28dc058012a2a5ce65eb6e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRMKP2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ab6eb7e087f3d7fdf6c1d8091cc451f62e95923b1adab061420512ca466529. 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/BRMKP2200072.
Coração de Joelhos - Louvorzão 2022 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e256db465ecea61ca6985729ef76de1b7754c6f756da54d7f4f82e9c0223b53. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRMKP2200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb1771fee5fb3b53211565501d695e8d8bdbccfb61b12cfc9fb6c492f1d6425. 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/BRMKP2200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2cc5c04215aea40e9dc4f357424b3be7572ad154046b0634a797d6315701fa. 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/BRMKP2300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61beab358ab75c121afcc92a3d89a3f98d35b75ef356fabbc58de1d8b0fdae5b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BRMKP2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2cc5c04215aea40e9dc4f357424b3be7572ad154046b0634a797d6315701fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BRMKP2300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c81e3f2546dd5b989165b8c009ffcca2b32ba2a7ab3fc0a5cfcbc39d0cf984. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/BRMKP2300196.
Segura Firme na Mão do Senhor (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93331fe19d2f2b2a977d9dd720e5f322a5a133898f7a6595424f5395bfef5cc0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BRMKP2300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb34237eeee22267e53660d6b760f566c9ef69ca1a967f67e3bc46b4834de4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRMKP2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189b95271f043f5e93fed960fc190dab7e00eed79fb986264301112e320ca106. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRMKP2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7d75d4f5468e0ea68bd2cfb07ed17d1b7c74aa79c41e5e1020097af35fb95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRMKP2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92459cd670e89efbbe73cc46f362cd20ae1171fa4cbf44ad08d8729cd01d4b05. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRMKP2100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4582d8f86c3d58423acde3163fd89ab9a615ec7a0139727d223e6ddc4f621. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRMKP2200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52809227eeda06eaec386e4afc4da29d8d401c3b8b5a1bde283faf2d16c63daa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRMKP2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52809227eeda06eaec386e4afc4da29d8d401c3b8b5a1bde283faf2d16c63daa. 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/BRMKP2300048.