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 0xe02ea894865610accab43a00d3bef0a7cd5743c6edb9e2f713d86b48a434b9f0. 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/f0dac370-8101-4995-a0d2-018000b081b0.json and https://artists.proofprofile.net/proofs/artist/f0dac370-8101-4995-a0d2-018000b081b0.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 0xe3492910aa54cec3d564538b8a28bb53f1ee97ec9525bc4041089db229649f31. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/PT4CA1431240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eedb291469cf403f5506d7fb49746f1d274366dd346ecfd09de773cfd0e04f. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ESA011971495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4dc67a1822042a62bab5f874b917b5e8e0cf757284aadfbd7399c9aa02bcf7. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ESA011971497.
Não Quero + (feat. Lil Saint e Saa Poulson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f312ef0d11de41819a768e0aff8b56e238878ef35c82143a5a5caba04d11dbb. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/PT4CA1434589.
Mulher de Negócios (feat. Nga & Prodigio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110eedf4c7cb01aaa7640201e9f61c10aa051eb356a6645b58014fa775499c1. 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/PT4CA1434160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2575a672eade7f859c4214529cea2dd4d83238cd64ae9101da23831c55f5655e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT4CA1434126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb26e893e39a05ed60875150a9e1b156369663155dc57f78af2f24ac6712a88a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT4CA1430117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcf5df0a9b84428172ac0f3cfdbc3bc19a39935e85f3fdcb45e0ffad735f362. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT4CA1430065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e7238442a6a550c54cbe516ac064dd2d5163a01d1cc822af51524b384d99a1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PT4CA1430071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f82e8c44524b830dca17ef541ba7ee2c4730c2e437ecbd6cd5635284da71156. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QM7281559946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e73c6f7229c418fe659b2ffab9f9975634d4013091961c9ce43f6d96c8a2bf. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM7281559952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b927fc4f41d8a3d1ae3016e8db3c5844b3a8e7e7c2f5d5624d9414cfbee58b. 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/PT7ED2000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cca0ef40cb568884e1f40d54db2a2def412273bd8cb02f5fd8f94179f79a583. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/PT7ED2100559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe167b28b8cbf1b2bba90de387f13abc94fb0c72769b3749c29e87427d789f193. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/PT7ED2300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d44767ba9dee9299eb56039c20d6a396779f22a3967d3657f11701f4c96aa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT7ED2300862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a75ba50a58f7f891cd2f66b7cb3f9f1e264c353207c4c34717b0952aa3bc974. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/UK43Q2490132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb918a437ec559792a24b3b3478e882bba519410b976b297869f89877026f4b8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PT7ED2400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31bfb1990211dc08c89486ec742c12d0795090e9e7e7a0ad35002c6b403c676. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMWW2118315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce52a8d7653f36643532f124f3df362dff189eb69f65ee7baafdc70f17be0eb. 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/USCGH1956452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870fadf6c82b392ad1bfd21d553bec4f711dd20e1d8fd9764a0b5472a66705c. 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/PTNS11600010.