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 0xcac273afb6601c2743d48671b5201d6455163e427a949784c0415c85d6c77313. 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/ecd43154-9eef-4a92-81f2-67d5848ea019.json and https://artists.proofprofile.net/proofs/artist/ecd43154-9eef-4a92-81f2-67d5848ea019.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 0x29cd0951383b2a270edf8febf96e22e0e251438affebef545b33c280a42bb779. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZGLS2403990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be3c13abe41232bf7efd0a65c93b5db42ad3c02717f79c5c4dded5f28b3d960. 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/US7VG2438397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1a9c82ff4a466889580804cd794c13e211ff164295aa9541de6ddc950df2ff. 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/US7VG2438415.
Tudo Tem Variedade (feat. Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a56b6f90ed4a47a510370e329788fa6066f080db80e27cbbc16de6b735e15. 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/ESA112426846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad72141b0c315f4339bb387d2890adcd1e6978e914efc7df5167d06766f0054. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7VG2490707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614c562d8b9aa94945c53d4504b598317ffeedef3f9fff79efffbfe847b56d6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US7VG2491198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0477ea2e4bc4e3d6b6e0c5fefbf2087bf4daa84b8c238c674363913cc08394. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG2438393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c09f0fbc616eed3201e62dc1c50643420b87370523ac703eda312e49b851766. 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/QZ5AB2410781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c13e7ac6bcb41fc0e9633fbe0aba198a68cd5033b3c6f4ab33ddd7ca82e497. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US7VG2409260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81725d3f009b5b622083c1fad62b70e6c06ec4a97e87b36874cc411dbaa3798. 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/QZW9M2372075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5c8e12e1129e59c7a92dfac6776831a7d40c5942f91b99207d568bdc11b44. 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/US7VG2425723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1615a1a533e057a6e040e66895ecb0601d652c806d7e5a2f7e81684a96dc4561. 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/US7VG2490713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbe52bf50f1ccbf97310d08ed9c73fd7a328957b50f0e779720f18d46ee5b75. 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/US7VG2445989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d291aec698c738935605a527e1a2f846b15edb91e340588a9709bbae47ebad9. 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/US7VG2424396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b6d35a4a3a1857c21c0bbcae3de184296e7031f526f4c347ef0846a51c3987. 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/QZGLS2414001.
Boca Vendendo (feat. MC Saci & Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a09678bbc004b4268e48596c80b58ac808b12b0f87fb6448e877bede08f93c. 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/ESA112445568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ceb3463f18458c3652dd58fc9afea72bd1547ea1dd3821852ca8db01133464. 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/ESA112426809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616532940e7e0ca96941fec2555a4693e163d52e9fa51d99b254b8bc48f62df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2445604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb280c8ebabf4b58a5e8da88d703aca5e7d45ce2cfe29a638b588ecc58aa88f0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US7VG2474998.
Fala Que Eu Sou Bandido (feat. Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6320dd3682561d6804eaabd2ea2b76dd0d884cdecb596f1f378cad71eb949697. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ESA112437629.
Vuco Vuco no Carro Bixo (feat. PZ de Maranguape & Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af0a7597321ae12c3e48c96539db8a4a16eafff2154ce6e72b8c22144ad32d2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ESA112437640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a95159bba6db2d47f7dad15f96831cf901d1abc5947986689ca1a272dc7619. 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/ESA112445558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb4873bf2c56f98bb6d52ee22fbb5f0992bc40559d8c2f97da7096edc6a6daa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA112445906.
Gosto de Fazer Fumaça (feat. Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba8b19d56605a495eed4aa9c197657a13f91d069518a42bb552f20a29bd6453. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ESA112445571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439980685ca41690364e3a1e1f0577e07a37352fa38235b6a8f55cabdf982627. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZGLM2439289.
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.
Carro de Traficante (feat. Bruxaria HITs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745872eb85ca945518f0eca6a960591760877b85668578885d6a42d678e62ab8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ESA112428751.