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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a51ca25fb9ecda2fc64d620f3f24e8d0d6a55a2591890c52b4fd12af087f4d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e71c9f1d-3674-4645-9337-cd808343e5ef.json and https://artists.proofprofile.net/proofs/artist/e71c9f1d-3674-4645-9337-cd808343e5ef.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ca17f9479ed9ef931fa670e456ddb01f0185d1c202900fbf5525e5aaf2ced0. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/PYC842303073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162fb0a5c2adff17faa2b241673cb73014d39337a9667a058451f7adc99a3770. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCABO1328847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45731d27931150f7c9f80d4f01fc2e3554a61c5bcbb721e8e87958dea91d798e. 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/TCABO1328849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e61c1c9c1cae8f8e1156cf7d2fd440aac60a39c3a5d16430eca8da5af85ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABO1328851.
La Roquerita (feat. Genio & Baby Johnny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f654607cf5e848d480fb8b572824a06ce91e4e3143f0fef1c496eb56dd0ad. 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/TCABO1328855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff037279f097334b3dbf0090495f92eceb6883913512fc47792f27667c0be6d8. 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/TCABO1328856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025a83cd5b6f9396b85bf3edde60e35de4e1afc8a5f5f5042a7d11c4db65b0ed. 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/TCABO1328857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8e7de4430b83d95dabb53d0e0777e62fffa0220e3d8fd3fc4682a2bca59671. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABO1328858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32a759e2d3e9435e26389197fdf2959103c1710ed9a360137e03fea5579782a. 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/TCABO1328859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bff1e4183ab09ea263bbba96a62bf922bc694575f18725125c698da56734a8d. 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/TCABO1328893.
Te Sigo Buscando (feat. J Alvarez & Carnal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a6708c37596aa7ede7254c2ad2409029972e33512c34068717b5f292e80896. 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/TCABO1328895.
Una Chica Como Tu (feat. Delirious, Endo & Benny Benny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8590776477961f090b1e3ecb8adc305150f4704e0442fa788d303fc0da3a312. 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/TCABO1328898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3a1da7ce38c0fdee4e4b79c1535172abd5b74a958c476e54c9593bff1db32d. 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/TCABO1328899.
Soldados (feat. Daddy Yankee, Barrington Levy & Nengo Flow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fefa56d339551cab85eb9ff35c058be568949c2b78b7b800e58ca13a9e974. 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/TCABO1328901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0674ef41fd02e7bf22e56ef3fda92063a82c674b6a161e6fd7b223a3c519bd. 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/TCABO1328902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bfc7587e6eca117e65ed2f866daee8b086b0d258030a77f075206bab0370ea. 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/TCABO1328904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fedaf6eb91bbb451dec9f708eb85c6cebefde09d03edb8bfd9386045787595. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABO1328906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ade829bd66e11a2c060b9ce589323d8c5156050b52c0683197a03d572c30fc1. 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/USA561293912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498f89ede0e3fffb24708d472f7a3048bd7bdfccd1904eaaee4f322dc9626c0e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PYC842303512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0d510237b85d2a8b80127d38cae9bed18b2f8dff1d43023a2dfa83cf05421c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:51:06Z), 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/PYC842302533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d42837dff832b11fd6eb49c53cf63a409c1ffbccba8d4da248e1582a4297d3a. 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/PYC842301381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a829456dd6f773df166d2dadcd561a07d8c480a79552efb2dcb9fe1e4320494. 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/QMFME2169410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9e41d62aaed10552ee71d4df0606409cb18eb2e289073c73741b4a1107097a. 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/QM6P42042218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48698875a27a3791d6c8c1c3779f77393d472da5249d8febab377c1bbbf2c624. 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/QM6P42005822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f40ed91aee57756ae7591575e31e4a7f6ff8428b3659a5d33412ffdfa3bed4. 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/PYC842402808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3661097d646b64bb227eb61999e553422a90c7a2cc91fc4746620a551b06dbf7. 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/TCABU1464849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5c9f4fbdbe70e3b7398b686c2ea5e6d2901b87a07da0a6d55c0211acac6ed9. 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/TCABU1464850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fafcb17b730270187ed768720e903558e6a70d6e7094f89e0bb2cc266ff93. 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/TCABU1464851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe647f869586e607089cf9336b9e15c89cff37516be48e03c576e6552c271d7f1. 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/TCABU1464852.
Busca La Botella (feat. Tony Tun Tun & Endo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d7d4cf3a0539600429825e345ec34936fa84e3769480373984b42074ca0fbe. 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/TCABU1464854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1936fef508cae6b40e8269894d57b7467859afb1aa777b6f4311fc65c176d37. 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/TCABU1464856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282a7f60600d788d43571eb1a2120830690f5ff0d6d3b738a188eb95776550cd. 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/PYC842401867.
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 0x64795462542301842fdd3992e1f7db214d9458dd2cb7c341f9a50e7fd2e62d40. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USHM22210792.