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 0x4660f60d20c3d502260a123c9d24b4f3c5c16c38e7023751b0b864620e49ab7f. 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/a8b9e108-bb27-487f-a991-6cf9a597feb7.json and https://artists.proofprofile.net/proofs/artist/a8b9e108-bb27-487f-a991-6cf9a597feb7.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 0x0c835338b778befc94991119942f649ff63b667e01b94e484697673c89c624bd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRSME6700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41acfc2e70449400f3b43713f29329326994d6669f6d75384c213b422bc05b4e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRSME6700066.
Jovem Guarda 35 Anos José Roberto Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc674f9c496812a9da510e1767863ee56b64559207359d6b4879ca11cda507d96. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRSME6700073.
Jovem Guarda 35 Anos José Roberto Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bcc56caaeca48d67bd14ee21dee172d1b5c7d92f6d99d435797af95b11226c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BRSME6800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457933a661d35ea160d9d8d0ffb5133bbc8075da02d0497d3884831bbfc84c2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSME6800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556c1620aee7befe998ca743b5f1921d6cece2aaddc3e90276911f19191f603. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BRSME6800083.
Os Sucessos na Voz de José Roberto, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f05852cf1851a38ba33fbf15c87e119b9a09e7806e4e922cdd6af37f511898d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRSME6700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c24242d153422e52ad3efe4e9bf8351786942f180a8cbae0d49998b7c0b5f5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRSME6700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0d47d27f23bd4f352d647b2f602ed70bb3294c8f9c3e4a6cebf89814f9d13a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BRSME6700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92893dd527cd4bfc0708baf3b3bafbfe35d11c0b8ab97805e28cbc934135a4d7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSME6700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5667681cfffb30fc244190c2b8556e7e12e464d7d28f614c97aacbd459b3eba. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/BRSME6800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40299fde82a6972215d1a7ee33c38abd017588ad31eb3c0e98c695663ee2973e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BRSME1702210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d80b37eb29e261867beace0add9a09f33cb8fc5e638d836ec375816c1781aa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRSME1702211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec58d5932fb64b880895ca1ca938399af9f95a5fef4deeb954ac1ce3f44feff4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRSME1702212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7504ff91b44535f1878bfae38dca9adf0013d890d10452ed1f80426d430401ed. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/BRSME1702214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa908469fc558bea79a31028db177a0e92f9e30d48e61c306feafda5c4721da19. 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/BRSME1702216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50fc7e5087eaba34d605948226181cc6320f1cb193f94d93b404c6ef3daee20. 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/BRSME1702217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e9b061f2eaf55994727829afbfe43a161da0991daaf4a9a1ee17b3444d59f1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRSME1702218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8411de6f6cb8c9a0fc5fba8b5705bd4bc5b658c44fd0708f6aaa9a4a802560d6. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/BRSME1702219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098f5a56871013dd7f2878016bf46258730c3b75615b22012ab7f11dfad0d8e4. 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/BRSME1702220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa5e8e78d210e768445645cc649e03eb12718587ab6a34628df308a00a43710. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/BRSME1702245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af4159ae48da50fd443e6224a0d73e5f91cdbe8f207d349541fc0c12df157e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/BRSME1702251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c920df1276a2c8f5852bbfffb4703083ed90f97b21cd808b2e88b9090c00b74. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRMAX1401905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb20e2575ea32b2162ffc2a93757aa516f0290415ec343fba737499cc4255605. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/BRMAX1401906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a35184d261bf88ac9947e71c0e4a8d9a861d2b0bfac312d67b4887d7bb22b3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MXF368427862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eb80d0d2d91e84b318493e28a906a7d8f0814d892facc6138d3ff8a92ed15d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/MXF010401631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d62c431f29357a05656ea4a0823ab277016619b53b4a217ccfd6901440631. 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/GBCLQ0601132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c31449d6df02d65758ab4f905191f8fdd13893ddfb2e7a9564d3d532ec7c15d. 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/GBCLQ2201276.
Tesoros De Colección - Para el más Grande Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eb80d0d2d91e84b318493e28a906a7d8f0814d892facc6138d3ff8a92ed15d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/MXF010401631.