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 0x997bfd7e3bdab5f0c890ea106088efe0a080fe2ade6dc8fbe07a25d6964c4b79. 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/c422c7a0-2873-428c-8a3e-a095f29a394a.json and https://artists.proofprofile.net/proofs/artist/c422c7a0-2873-428c-8a3e-a095f29a394a.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 0x286fdf9f97496991b96bc5cabdd95377a1463806077a1d9d0c0c891bea769186. 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/USANG2185437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f45961c16ae0af5634915efdf737406da57ce9d3f2bbe3e5fbddd2ad333ef4. 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/USANG2185438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809602b81d12b5e9bf86b1decc2ce3760048b02979141ac344cba534e5d17d9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM4TX1937137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163529cae11ebfece4540399434e4fae8177041f552a80c2cbb163b2ad75844e. 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/QMDA61820178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f23157ff557d01e1cd3e4d191337377d098e584b1d7244671081edaf2ae7dd4. 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/QM7281967121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9e4ad406b51fef15d0a0756b51990308622ce33681e2f535de2a0b30794224. 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/AR5UH2300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d84838ecab1b9fb560327e2598fc68d1e8ef5c8e3e10b50f2300b82c828c71. 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/AR5UH2300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923687522fac747300bcd245f976d555364bdb8cf6ec9d6742d4ccdb7e75d9b4. 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/QM6N21966237.
Levanten las Manos Que Seguimos de Joda, Se!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2282603bdf9fea967888bbb36bc692f12cfb52c3a8dd16527e33f8b0ff8069b4. 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/QMFMG1593902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550b2c2d8d03fad83de8cb3f5c33bc3c05ddd3b59f843113a5c303bc43626c9c. 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/QMFMG1593905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6896d99c0fac06cbd69b141d5db2cc259a1ca37d22069b51679f2ed82b4fd. 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/QMFMG1593910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02708e59718a7a1b175f4f68905c058e43664fd8eee59c7ccb63eb3030d247c. 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/QMFMG1593911.
¡el Que No Hace Palmas Tiene Culo De Pato Cuak!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea220a190c355a8c5d52371884c429ade822bb5a6887c566d209a56caf4a8a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMG1586086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2717de7ce88c96dc7b80f9ef148d0fa05ec11ce365f32d6d51bc994ee8883f8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMG1586087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20719157fcbb84184a6e215daf829b048aa2de453962cd73bbd8d2a7f9d28cd5. 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/QMFMG1586088.
El Que No Hace Palmas Tiene Fama de Gato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d4037e2103fb45c7c2fba1f59b3eb48e2f9ee7a3ae9f9a0cf974344aba7427. 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/QZGLS2503218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02ef8f41ccb9a941d393a30429fe1878f83d2be58e1f9a971e7fc7fa2a31cff. 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/AR5UH2401704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186edf54871b87357d6ab1eac067d61d1929ca51da907af60d06c559a8c1f48. 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/ARG991048336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a5f11371bc687d13cec0d3da64ef8b1a31de282c57ebb9165cb1ed6c4a3a7d. 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/AR5UH2401631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fd302367eae9c9f2d94ff25f333d59e9eb86a5108ed991da0cea20d2f41c90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991047955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae68904bf612d2c9accd0a60d27e821786a9120e41154f1d7ab4145483b6515e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AR5UH2401210.
Conmigo Te Gusto / La Piel Bien Caliente / No Va a Venir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0536c9b5471659698e64195f74291a44c7dc3a332ec245cbfd4a9d9d115ad1. 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/QZTPX2418485.
Aunque No Te Pueda Ver - Se Me Ha Perdido un Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc65127b832ec6c4b327f3df7ee87ecf40a56c74ecadbeb5413ac248202a0cb. 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/QZNWU2040532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e47e443c565f88af3d3d901b6584b77c0b43c1081ffa66cde8d121176ecd51. 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/FR10S2048553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5401cdb0a1dff866b76053f659d35a7c538b11078783e123097ada73039b60. 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/ESA012069782.