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 0x2e3151ccfe225f99d8e267fc872191cb1ab0c101d927e5ec6de6281603f159d4. 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/62a556c6-aa8c-47cb-8c8a-d6642a92aba6.json and https://artists.proofprofile.net/proofs/artist/62a556c6-aa8c-47cb-8c8a-d6642a92aba6.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 0x1af36a968f762e004c3589b35f6f4cbb737ad3291bfcafdd1aa7538589730b59. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG1765503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1c4e4851163b1ccdd1dea8eaf3d13b7349115db42f405b124ddb2f70e15f86. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/US7VG1765514.
El Ritmo Sabroso del Grupo Ensamble (Copyright Claim) [En Vivo en Deportivo Lázaro Cárdenas]
Tus Jefes No Me Quieren. Llegó la Cumbia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829c2be16a8ae6bdc2de549cf19ec39d5a86c4f9d3cda587535fbd653684375c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2134622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978949422c0e968a21f1cead329bcf286bb6529dd28e6dff6390affb371c0285. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM4TW2134624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99df3738e0d52d6a7d11af1a576dcb4fdea0e846dea9b219b59877eb4df378. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM4TW2134626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6b8310bbf44b44bb87b32d24828c30bc21d8862e30462cd4422ac2b3d72be6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM4TW2134633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8bf73903f089cc380bbe3961448eb7727028ff9e814d04641c0b9b6ef20d44. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QM4TW2134625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86420a6f17e046843149242a8959d4a037ac319c27cc36ff6d60185f5791ed92. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USANG2196593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc8e574f74460ec8f65b2d92e80e3443f552ea76090614202d0931addc8c258. 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/US3DF2134957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c77e093b07bf3314e2cc3c0d240dee5027fadfb9cab36ac763e00aa68d15e8d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/US3DF2134960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6853ecdd3a3d1c6f5232e3591ef8a8544a6aeff833f9554b158384e0e7fbc10. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/US3DF2134961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a19f98e55e2f1283d717b59d59a42695293ecd69fcdb4e0c57162571fef93c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2176665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2accc160f3fa718efa86c05982de34bb2e70076be035ab4c8185fc4b68e7fc8d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF2176695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b21373a6c9ae41928412649f677195e689db98bfb6d49d4e7ee7c7301cf477. 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/US3DF2235174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb343bfbe13a95093dc6875bc22101be2f3b2d3c5f6cafc2c312b508df6a6ab8a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/US3DF2257129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f5dbfc1af4e4627462ab371f2b16b1bd8db96d692d6d6dc7327068d541fd6d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USANG2226040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5acc0350ba423de7faa40f656a44386c8694f9b0d0013efc19a5850bb34cb44. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2237754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef771007bc73a22ae67ecbe78acad582c311987187f6d4abf8e87706fb087785. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USANG2237755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8989647ab7b03cfa9fe56ced01b74b979f2d7b230f30cc93881c3374df617a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM4TW2365407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68080cf2443feaf4be8e4ef1fe2a9040e57ac0ef56c00fc1bf244dfe6853c3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2365413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd6257928db842e2af31b6d3871d5b3de15778345e3b60858fe3725f9014ea6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USANG2245980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8319daf23e0b7854003ade4c5d55643bc81d2d6f7259e3b5ddd05e113317273e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX2324168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c10092ae4cafbcee9ba3130f830da02dcaea043cbdbd9236b672252cd08ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6P42318927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3000f879566d73d0770cd5c8f9a63b160551448e0c55e2f48e8c09018c163e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM6P42388986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd411268821f751b08859e6bb2dd5ec4e8683af68d722ef2c122dc0d5c979bc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QM3DF2296316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf0140c28851b46e3e1f65b8b941290a138a0a3348155292a87ebd081e796bd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QMANG2459398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f694448452cce6c058836d1e6982cae2509d35ba8be3cbd6fd69635b8c9e7f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2425554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fbfdb076e9255da9caebb9d97590e57e5711129db5f4dfb9c887e0502fcd11. 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/QM4TW2407176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb290e3a74f079ee996a1aa17ceb0ba696875271221e21582126ebd9579a4192a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22434702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0fe259a4113dd1e6f1d16fe9f0f071414a1c54ec5adf9b56d5b48713b7f6f9. 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/QM6P42412796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe165db41df32833bf9147a8e13799484231b7dd1a22ea5b22d480a8829b33412. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/US3DF2501999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a56a64baab5bac56b9ed7da90b0f2256616f07d57d635769620dc51b14447. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/US3DF2598616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e10d419839aec390d8e984cbce5b453b3f423194a8d9756163f5522db8fa0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMFME2500637.