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 0x8e5841b89789915f70081d923617d41075a47b029ea94bed81cd4da5eb811078. 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/8849343e-11b1-411f-af8d-3142fa9cf6f0.json and https://artists.proofprofile.net/proofs/artist/8849343e-11b1-411f-af8d-3142fa9cf6f0.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 0xd6edd91620dbce740554bbf5187b4923fe13c8e78aefa68754150910ccc84271. 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/QZW9L2315761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca7af9e8ff21f8c111cf838b40c3f3ca722f6d0fc1acf7cf68124be351dd0e4. 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/QZNJZ2371192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8582411e3c4908eb302e0a8a6da93b922a3f44777e3a8d600b588ed3361bef. 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/QZNJY2382936.
Las Mujeres Ya No Lloran las Mujeres Facturan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0653bbc7361afc1831ae80738beb55204c5127fa22544d4a2d06af8894e8048. 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/QZ5AB2298943.
Una Demonia Tiene el Cuerpo Lleno de Tinta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e8aacaa903e1a57e206454b8472391bd226d23c82c4140942690863bc93e3. 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/QZTPX2124529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac73d66ab4de29870c29b11fde7ac95271c7b5d5c6a3ff84eae8eb2d6fab75. 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/QZNJZ2121327.
Con la Mano en el Piso y Con la Pompis Pa Arriba (Remix)
Con la Mano en el Piso y Con la Pompis Pa Arriba - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2913a1c584928e1a686588db6cdffd991aadbb444fec049e631e1564ebc9c41. 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/QZNJX2154354.
Cuando Mueve el Mmm Aa (Ahi Va Luisaito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b37e8b02acc659960686a19c33d468c606a026b568eb9082b238dc6c98afe9. 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/QZNJW2181454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610f6068bf3d042b4111ca74a8fb0f8b2ea69b29a0c91276f51ef20f57cfb3d9. 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/QZNJV2139574.
Yo No Era Ex No Era Ganado Ni Segunda Opción
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec224ee44541f41cd1b0bdea328a79e3dce8b457e61a67d42ee0462ae9a9075. 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/QZHZ42180872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddb7e22dba36e5eb28e84b4a573b21f2da9d737ae06638cdd8f3e600ed877b0. 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/QZHZ42140138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d05de8c363df5cc8bd17187895b17492b192025651751fdf1ee77a26560eb. 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/QZHZ32162385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea748389c7fd6aa01490577832e7902e36909aadf439eabe961c78877950fb. 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/QZGLS2109246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c016a1e8602da596d12c52c7f1e7ca12a73890b5a1c087b32172d712d4c1b. 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/QZ5AB2125779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da6850f23c55fcf6b679c39c629edc98774279bdd110c5b50cb673096fc58c3. 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/QZNJW2053317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6997f0d013f70e91f7496cd5e76a1797af77abec7a38a6b2d58326d7350edf. 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/QZNJW2024056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa2c5dbaa67b0a270e29988d7e706cc2708f67a886560355e900f79dc68335e. 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/QZNJW2001682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f17a8224588e187d013bc774c9eee9c598fd057fec1cce6830a3e4a1f6ed30. 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/QZNJV2074089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94e97b92e860f35152514a0027da53d6608a0505cc14b597bc4bc2daed20034. 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/QZNJV2017891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cef11a9e3ec1178306629cbe3af8c4c7d0d9d39cf76d113cc0634a002289ee. 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/QZNJV2007903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0ba9b3808f46bc34693bc64f478e2e05b91337b2519d0e7ac30b12a9b64cb6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ62042100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82299f1d505935a477abf7527b17b28b7a244ef515d0629d1ffc1c346071b47. 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/QZHZ62057497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4740a8de754d6c8208896a5b47e5c2562751dac6435cd5cbce22625907a0880. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ32003295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7354788f25cc0712336d88d214f910cd5233876664b23667153e01a5d6706c13. 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/QZHZ51970991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6425243c0c1f7894a44ec94c45ad8b0a15b1ddf8ba8c3fe171736a827840138. 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/QZHZ41943846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03fbf961c8318f1ad47699ea98492836f43fb11411d2da48180467c72f7f835. 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/QM4TW1675594.