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 0x6c8e7a7e257cec982041846feb63d9f6c4f397ba4885de44941e580ac307384c. 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/2c3e2d22-8eb3-4387-8734-50ca82f224b7.json and https://artists.proofprofile.net/proofs/artist/2c3e2d22-8eb3-4387-8734-50ca82f224b7.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 0xff1efed7f7e87b8005444ee2ccc77782181dde45193657c8994aba7a5a1fff19. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USANG2074933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b9cad10850801526410bd3eea948dccc0d9272defbaa156499b29f0fc5e40b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2074936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c717ba3f728eb7b00159691ecebaaad9886ad6955e64c74691c9f87d1352168. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USANG2074941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272fd5f78b1cffa8bcf2a36f713fbbaed17238580b5e9e67cc405731e5840fbc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USANG2074944.
Sueño Egoísta/Loco de Pensar/El Llorón (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd627b297fa584eb4cb838a9982e67c7a3109db5f43831fcbddd1a40866d7e80. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES71G1901235.
Aquel Hotel/Clemencia/Esa Chica (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e2cfc268f33c20f179c660dee9e38d8a2c2df9e08380f1c96e424d4d333a4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G1901236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaeb8a5ee200f76405e3590ac89cbfc55696d94637d02e7a090422f89fafc19. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G1901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955c25de6a14c9d7b7053f0c2677d6218bf951af1b44cf105590951f718a59ba. 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/ES71G2041984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a00747c503fe60b693bb4d59728666c0ce9519d2c1ab777b701d95e7a3a68. 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/ES71G1901204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b1e3243f3e5a1c73fad824172ab1c6873a6a7e8d3c14ec7bc76e850f3730f6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ES71G1901205.
Mientes Tú / Clemencia / Mi Historia Entre Tus Dedos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1550998668b59f39fb629df05b9912c67ef686e6bc1758af98715b9393b18907. 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/US3DF2075261.
Caprichosa / Perdóname / Tú Me Dices / En Mi Propia Cama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771178e351ef62ee2d555cd6ef39efe4b19277b726a48ad160671da5ab7c75fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2075260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1550998668b59f39fb629df05b9912c67ef686e6bc1758af98715b9393b18907. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:03:51Z), 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/US3DF2075261.
Mix Homenaje al Grupo Krystal de Iquique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388baf1c97c0eaf693e02c4ba47075c1b50740cb517ef8d96e5586f9e0deb5c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AR5UH2401235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa9bd0c322465f8602dab380ca56cac5076d3d39ecc730f796e797ab018f58. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AR5UH2401241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86970690a34e99d6123dabe9e1e25ce7b5bffcc2b82a6e611b144e4dc926b993. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:55:29Z), 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/AR5UH2504648.