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 0xc4b060b2dc21e3a5c76fd0b42b4388de283a0bd574b049d196934f1da6132cd3. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/019a80c8-9b5a-44d9-80ce-a799691e65cd.json and https://artists.proofprofile.net/proofs/artist/019a80c8-9b5a-44d9-80ce-a799691e65cd.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 0x6e6f3a9f91e58b1399af6c80e261d58ae2e8f0d6a87545ddde156c63b8463493. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QM6MZ2217198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15485c4b01185473e9072f889800d5aab70765262759b3b996c2d81bdc8d39e. 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/BRVGB1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e8233af343be1931de9ae3ca83c5db0430b8c40501d01395ca3e3df9b4bdb0. 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/BRVGB1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6fb0451cc1bb776611c764742c497bb66d281560f59db63368d7fbbb09af3. 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/BRVGB1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb271fccf36ba34efa637bbbb3da79c193e328fe3967d0d23ddfce34ea258fcf9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRVGB1400007.
Doralice - Live at Copenhagen Jazzhouse, 2001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cce466d4428c573ffa697b2b32ec26dc3de15b24e002c079e07d0277f95083. 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/DKEFA2100604.
Samba Sem Você (Live at Copenhagen Jazzhouse 2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e5410c9a8d47ca6bd7e8c86fd45a95fc89a4320a5d2a590c95090c1efdc0a3. 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/DKEFA2100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de830f034e2a59f12d7e71015df37c118ff105b2b31ba7885acab7c3a638f39. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/DKEFA2100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d6d8b080ec752092ee4975030eac453bd69a3492ef26f9f6f8839e01840842. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKEFA2100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cce466d4428c573ffa697b2b32ec26dc3de15b24e002c079e07d0277f95083. 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/DKEFA2100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61875b4545d389cc71d0263dbdb962e606a833ed79ad700010fa7a95832ca88e. 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/DKEFA2100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe866b866990564bbf20ae58f46a8393bbd15f8a2f44d32283e70c528c03724. 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/DKEFA2100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f4c21db26a3b9424c7ab990bb6ead4003fe1054af93478222324c5e6b75098. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DKEFA2100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2608ab633ee2bb414c0764af75f04f3bb0a1501f1beaf74fce562e52986190dd. 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/DKEFA2100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eeae18c437fe83bc432f3d01c0d7708048db220117d56e46a89fef6f3afcb1. 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/DKEFA2100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a778665d21f74e6ff31aacbfa48b85de89ad712a031d5fdff1e6fe36478416. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKEFA2100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397a33d2acb1caeb1e37c13901cca6ee9bd40b7b982c456ef1d620aa38e0da14. 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/DKEFA2100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74efc6b3790ae63182e6c908ee1d98fa3fa907564ff0d6333b0b00d9fa9535. 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/DKEFA2100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe469c6454a0e56b9716479977cd91bb0565c9fd641082038f9f8923a44b7b496. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DKBDB2401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae07bbebd76575e10018b39ebde5fdc1284123708a21425a02166b40fd2461. 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/DKBDB2401802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743c3bc4d6ce61639d4f59e2a41ac14e577f3f22142c35f2ae2654f9dae68fad. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DKBDB2401803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f24040964c4459da6cca074ea45540051c751c6c8565f5a4bc97641ddaf5aba. 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/DKBDB2401804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d7e7e5446244a7ca3749e91c816a38955e1e41d7976b520ce803cf88c75deb. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DKBDB2401805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31b4efce9d9141d3cfc505543e003ceb208313e831729038a099063f3772c72. 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/DKBDB2401806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5839648d99b347be2779c165635f81d8df7e247a35379a6a346659a1283981d3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DKBDB2401807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19955a8ac8b7b00a6a6b989ba938904378caa0002b333612dda845c9548b434f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DKBDB2401808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fb27bc8828939cd6a95d1e0a1a8612eb3df2f72e6f936afbdf242839b6bf5. 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/DKBDB2401809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ba26bea9ea3e9d76027e1da0802d2710fcdc3f0b88c7f6740e47cd805996e4. 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/BKPU42200008.
Brasil Instrumental (feat. Carlos Roberto Oliveira, Celso de Almeida, Evaldo Guedes, Roney Stella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b46cc4bfc87b3dedf25bcc44f66c5f98fee5eed21d60fd7e25a1c10400324fc. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BRRY11400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0eed14aa4efac7d93f2970d2de99288ed871900d29a46f077db62017e79575. 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/BRRY11400007.
Celso de Almeida, Fábio Torres & Paulo Paulelli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae07bbebd76575e10018b39ebde5fdc1284123708a21425a02166b40fd2461. 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/DKBDB2401802.
Brazil Sessions: Viola Violar (feat. Vanessa Falabella, Agenor de Lorenzi, Edson Menezes, Celso de Almeida & Marcelo Freitas)