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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3bead5bd81f3784632a8f334d8c6789a2c3dc47b07c71a7b0b853210dc0231. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/725703cf-5ac9-4796-bd67-aa112d14dab3.json and https://artists.proofprofile.net/proofs/artist/725703cf-5ac9-4796-bd67-aa112d14dab3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb4ef906063b93363c97302ef2a6f868c0f9c15790e21898d7cb5ff94d7922b. 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/QZNJV2471146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a95159bba6db2d47f7dad15f96831cf901d1abc5947986689ca1a272dc7619. 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/ESA112445558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22b786ba5d3a11381021a1c7deda6479353fbc3656d3ad1b675f6dd9b7f7884. 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/QZNJV2487757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87590642daf27f647d449608a5b0887cb8a468c464f1be2cbae02607dcbaf2e2. 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/QZNJY2424517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e19505091b89940e0e1c17b15d017843cc1d1fded5f4185df3d25d65993cf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA112562763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485bcc304d142178b4bff2d19d31371ef5e4357ba6ef112c5bce302b14f07bf4. 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/ESA112561067.
Quadrilha de Traficante (feat. Bacana No Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732606757e1802cbac1a5478ad5501e9e75e0b8e3b16abaa52b515bcd1a128a. 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/ESA112453894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c9e0be797aae898a6d4236ee5e63c36e77c56177de59c4d47df1e8b25a88f9. 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/ESA112457495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb757173bf4d2ef872677aa41a85fc944a2ca47bee7b25caa54108fa39385840. 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/QZNJX2442495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65febf9fe9b52c134b941144c2aa4ed48a7bcb2b5a3b967cb8406e6642972924. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJX2413070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2714f44b7446d8b31b8b154b2abc790963ab7523f24be06388160c9bb6744. 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/ESA112570352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc210d5bf6e1e0b4a834d90ed1ad999e40707f4124d4030c794f8a26d67102. 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/ESA112566121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d58a928a81229e089d4ae2a57fcc63f4af8bbcb0120648311a4650a96118ca7. 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/ESA112565240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b153c97ce8871a30926d82d5f33662f82e34d70d26bacde78002e618c1acd0. 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/ESA112564522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8c7f7d73cb8862c9db2f28b7ccd14fa3584987b675cb0972fb149c57a9363. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJY2415403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8750ac93f563afdae895a132d90cf344de7823ac814a2ce4cfeffc6f15d88d. 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/ESA112438403.
Procurado Pelo Nordeste (feat. Mc Xande Rd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d4e5b7c4731f965aa5db39daad17c4c3e742b6809ba0d0c048b460aac2434. 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/ESA112427498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb443e3f537d4c91c5e3d258fee831b2136b786df4ab256e6e4d3c6da1f47d17. 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/QZNJX2494088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f266d85fbe03aa88c26f6a601a0ee249e0c3760b35e04dfa4c38546b24e0cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJY2488377.
Trepa no Parafal (feat. Bruxaria HITs & Mc Xande Rd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd597cbf5f7cf22485e773b55d6cead030a136284944ff04b3959d7a845bcbac0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ESA112445562.
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 0x47d936a077b28740e8b9b2f6372ac1cb1b2a0679e087d33cdc075b263522aaf4. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZNJX2488879.
Os Cria da Loja (feat. MC WL da ZN & Mc Xande RD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfbd66df94ae07293fb142f0d7a997487878398db165d044eb7d0b5906f036f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ESA112446073.