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 0x1d8fb235a6bde7613375d3052dc966668c3cb4320c7fe926377e175fe7525e15. 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/da8b32e3-b234-4b20-87ee-825b66168b9b.json and https://artists.proofprofile.net/proofs/artist/da8b32e3-b234-4b20-87ee-825b66168b9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Style: Solta o Tamborzão (Ao Vivo)
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 0xdd10b02c59d00dd9eb31bbd32a5b607cb300943d813d1cde4cf72b05116c272a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZNJY2297162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff539ff42a0bbad68884bc78fc6aec95876fe94fa0153f94cf0d2e7dfbeb76ac. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:39Z), 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/QZNJY2297163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab8573552dbf49134efee766cca4205dee5bdca76038791204ea9e2e61727e9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNJY2297164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e3fb6d67135dd8d2f8272a7fbce90a82bd339f370129b0aa52a115fde4d23e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:16Z), 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/QZNJY2297165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261be5da96bd3f6faa9720da2acea7cc04db5e2773628df5d2807d25227f13b3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZNJY2297168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17273e17093f39eb9a362cf459c30228d155f1180e92a99f60930bffa10b3dca. 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/QZNJY2297170.
Bahia (Esporte Clube Bahia) Hino do Bahia Pagodão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dc14be0417225d9b69f705e0668fc51487be43809f80136da10bc9c3e6c882. 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/QZNJZ2233783.
Black Style ao Vivo Pagodão Elétrico 2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c86299b88d10a481fcfa39637d9423fbb521095d61cdd0afe3785b8bd4f2d14. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJZ2233830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d1bb7c913ad83d9494f03368e754062d9035ca37831680a1dc6c3ce94f8e1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNJZ2233832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae47f11e1820196238cd228789de9d2ba22e42c0e2b814465aec4450c28b917. 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/QZNJZ2233842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a70c52bf62ba3407c3b5f968dd510630c178ae58af26b48ba8f873d9d90356. 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/QZNJZ2233914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2728d2aa6947d028d9300982b6117f8cfd771fb29564a07929bebcb874ab777. 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/QZNJZ2233930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc236de25d85723d251eea4d5998189b32943bd27140d77988363979679f03c68. 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/QZNJZ2233931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f989132184fbffd280e06f121c48185dbf04f397c923d5faf8b1e10e892665c. 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/QZNJZ2234061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1430b952dfe1e5ef5906aa8446d9cfcc787dbfcb16431f98b3924f521768b4c5. 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/QZNJZ2234063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae10e880fa7a859b9ff3b93b2285ae3fb1d563f96824ecfb5ced58116053682. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/QZNJZ2233952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a41478f8c1c61d0ddc016528a55eb57fb3129719ba9a3286fead108330a454. 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/QZNJZ2233954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5057ed422f36a455e08805550a1895964476d5c5fd9b2f46ad955c9a841666cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZW9M2273678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d167948e8c5ee9f884c9c6944d764beb5fa43c7a6367311a0bc778115c700f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:26Z), 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/QZNJZ2233980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40046d3a5936a96cd436b3d860f43529a072b8e150f3bd03966b90a1c0d8b1d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:30Z), 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/QZNJZ2354495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6863ee407cc3adcf202ca1773e0e3d660d0aa3e98f5d61780e4a4efc1d6791fb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:11:51Z), 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/QZNJX2457668.