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 0xe80f4fa1e330c98ba38d0e7d8990ba30ed9542e558140a8ca74621453eb5991e. 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/d575feb7-018a-4482-a31d-8d95703bb8e7.json and https://artists.proofprofile.net/proofs/artist/d575feb7-018a-4482-a31d-8d95703bb8e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maria e o Cangaço (Trilha Sonora Original)
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 0x3726eaf5869f87929fa0fb4e7c4145adad94a8dde6005f1c1b932792d50eb91d. 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/USHR12449933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a86b28717c1ce711833b15e9aae07657a049eb13acde964ae45c13cdaaa0d5. 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/USHR12449942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e850762cfbba6cc24bdb3d9c651c458a085aad07115881bbb482ca82fa9669. 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/USHR12449947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a363b7807d2179865c99785c8f333474e37c265e1696979b8b3bcd5544c453. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRI7L0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e85e7034d269ced34272e75fa08a0842d04664c857929bd000600737ab50541. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRSC41000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40a53da7c3bb6d34c60ce007d3370c486e7d3ab5e0085c07a86391efa4fcb1b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRSC41000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823a2aefa10badb9a03f4568fef97eafcbffcb3a39da9c4b676949a30595509. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/BRSC41000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee9c2521ece501abfe6316e25cf38207d1220d67f575322cabdbd2c8b498d3b. 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/BRSC41000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c36001f1ee89f894a2902ab5b0b4fc2f87d05c4513fa9c915a760775696e8. 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/BRSC41000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34556caafe473977844bd35e029818fa642be7a48d43ff56eb7074c7311e057e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRSC41000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f5c31fda467dfe7f915f0a61d1d4164b009911e9d72835585061f9b5ac1c7. 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/BRSC41000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02db82cb9fa19f93be34e0c9f65e985c034516897d92dbf8e55e30f39aaf673. 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/BRSC41000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1374741b465d1736cccc8d1c6b66861492961a122c9b1d88518f21ee0751fd1f. 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/BRSC41000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b5d40ee4fc15259f8bb1357af53e21061ea79a7ea7a2cacaeb4a68de6d2ff0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRSC41000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf737b0515344a5718784c16342546bf508e6eaa556ee7814cf970eb15663cbd9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRSC41000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397654f199c656399248ba09e52796ee8225c4fdd5e8da80a4184a5f45ad3189. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BRSC41000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb729ea8755a62df4191bf633f6f6f928fe523212359779a0910b7044d2c8db89. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRSC41000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e4796cd3533c29d18980d57cb17f10d34cd0e275841f8d94546b86bb2fae8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BRSC41000096.
Pele de Vidro / Skin of Glass (Trilha Sonora Original do Filme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd080cbd59f5f0dd59a4ccbd54a25409c36bef763802c57902e3c60d4c243032. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BKZDF2400001.