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 0x25455c3004cd922f27ea456c3f0557fa2ed731b8593fa27946332fcd3aabad0b. 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/45320322-b150-4df5-8828-f219384985fa.json and https://artists.proofprofile.net/proofs/artist/45320322-b150-4df5-8828-f219384985fa.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 0x3ca7b40e8cbc850096c273fc129009e3ca9df3a3b4b9ad88d91cf357c51b223e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRUI50900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223dc01aff4d5c040cd6b0b280f1be6c6d1c0237bb9ccf13e0e2575d791b68ab. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BRUI50900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48b3421ec365393ea46a259d708a221105270119bf84e462db458bf73f0600. 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/BRUI50900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6142a6c414e6613369d3be80cbda67ee04937801c0d152004b45abd2dc2471a. 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/BRUI50900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3260fc23564c0baec92ec847c2fff6281d65623a1cfcf56ecef69d9d683fd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRUI50900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd4f21b0ef3850d9c6997077cb975dd1e5f90ef1b20badda01e933faf075535. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/BRUI50900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e8b880850acdaf0c70ae278b738e6e1fc58d4e0a4904ab027de39d1a6c9b6f. 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/BRUI50900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879bbd26a0eb3aa4585c4835c809a8b4e8ab4d797e1e8b597bb6e67fd7ad9173. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRUI50900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6f45698dadae8c37eb72f549f999507e3c66a1731007592312bb6f230ac6cf. 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/QZ5AB1811918.
Apocalipse 16 - Árvore De Bons Frutos (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684f6d5df0cd0a7bb55089d5e1da17a1cdecfd6de83bb2281b5c9f4b2e76a416. 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/BRAP60900050.
O Leão Da Tribo De Judá / Nosso Comandante - Acústico Ao Vivo
Comunhão e Adoração 6 (Acústico Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ef1407248882025a188f6eefaa56446d3e7ed5d007f1c8526f9e66742c129. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRAPD0700011.
Orquestra Filarmônica de São Caetano do Sul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a8e410526329adac75fa19da80ef6fe89c2a14aa5bb67e1585ecbeacd6a6bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRAPD0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e11feaec6f00c8c06d16674b671bfca6226fe420dbb96816a93c236b07cecb. 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/BR4VT1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698a7d1fb359cddbd5088b2d4e821968b81f746b3f36284c30590185815c6dfb. 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/BR4GA1100099.
Eres Real (feat. Ingrid Rosario & Luiz Arcanjo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10efae493050f1a6aae04c3bfb5e006505bbc08a33f5a7fc07c138f64bd28c6. 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/BR9YX1600068.