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 0xaa77ea42336783f3ec3d1045404695a7bcd093f6c8ecdfb816d34b55dd094587. 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/884e9392-93ad-4c14-bde3-cda1fd2b8386.json and https://artists.proofprofile.net/proofs/artist/884e9392-93ad-4c14-bde3-cda1fd2b8386.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Deixa Acontecer / Estrela / Eternamente Feliz / Alguém Me Avisou
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 0xc833b0e7591fff91909457c490d80d745ff843fe8516cc00c725532bf6ed2627. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500981 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1bbf13863e5612aa19bca82550d6531913094f0faaedf14e0e89faf3ad6c0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500986 — a six-check JSON result.
Faixa Amarela / No Mexe Mexe, No Bole Bole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e90c172a06c0b2becf587622c19f42393910433cce3b3825a9cc89564b08ca9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500991 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f773e3e1fdda37100ff057faa61548bee80a69228204a1414ff3c14f462c7c2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501049 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570d610712d35bfce5f730661f6590242d5b2c6cdbebc1c6473b8e0b58cc4c0e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501050 — a six-check JSON result.
Minta Meu Sonho / Canto da Rainha / Preá Comeu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8683d1bdfb8660e041d0cbb1977c2fb52c5106360b50befec8897005ad5acaef. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501051 — a six-check JSON result.
Amo Não É Brinquedo / Não Tem Veneno / Se Eu Sorrir, Tu Não Podes Chorar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac0eb004d9230fed86fee274392c6e3d702f01f84f85a3d257a4694dc7a2889. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501052 — a six-check JSON result.
Sonho Meu / Conselho / Insensato Destino / Vai Buscar Yaya / Era Só Pra Relaxar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c6fda66ab192d4b73f3bc4f4e52e072f875ec5df349048ec97faad760698c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501053 — a six-check JSON result.
Estrela da Paz / Vou Botar Teu Nome Na Macumba / Bombaim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454bef6f7d78f12e4bcdf7ea1dabfcfe3260288e17f52dd2711aa1b697eb4856. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501056 — a six-check JSON result.
Você para ficar comigo será diferente / Amor Inesquecível / Sincopado Ensaboado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff3dc605873facf0af345a1386ad98290256e669893a77a3da4cc826c19675. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501059 — a six-check JSON result.
Corpo Fechado / Canto das três raças / Mineira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5db2b940b5a7500c5d00d1ffcc51636d3386f3468df01c5b380e43305d438. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501064 — a six-check JSON result.
Se meu pai é Ogum / Quando Ogum partiu pra guerra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec36b2e5afa55b34c9d5adf2210bdecdc8adf99e480db8051722c214f6eca49. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501065 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02cddf52df389f7186716f2075084b69fe9519b5ed6eacee2c1caf4da5993b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501066 — a six-check JSON result.
Somos mais fortes para corrente não quebrar / Olha o povo preto, vem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad719129a96e210a1a7410750ee671bd1e812827a3fcbcce27827a51e5619c2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2501068 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01f7c80d41073c4e26c743719d930024c56c612435af40b49acc623b9e46976. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA052548139 — a six-check JSON result.