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 0xda61421be451147e2e888ad438d6bdf5813fc4adb41dd2059ad62298315048e1. 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/85414821-9395-46f1-8b1e-4194ca664959.json and https://artists.proofprofile.net/proofs/artist/85414821-9395-46f1-8b1e-4194ca664959.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 0xa3a211fb7c1cdc0f7a674b1aa68a998ddcd12d46afc5c7a9ab207795615d4de2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHZ42006481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f652c60dad5f967fbdd4800a8f881d2014c324e3e6a045438dc7ab25e6807. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/QZNJW2098615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23edb43b97ff2ce6e09127c673d71b764852a65309e94003888c9072dda033f1. 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/QZNJW2098616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd943630ad9c59c1df230835593cfcda7506250ccc8a2d431c912781ad1f3d90. 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/QZHZ32097274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679abb96cd7f968095619578859de61280caea0e27099f74ce1e75b24235a325. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PEAA40707003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9419f572cfadbd4e43d99440c5f9fca6597ac31ecc4c44de571ae4b9082d5. 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/PEAA40707006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed5ef08f913fe319dc924d52c785ccd774b2715cffe0b90050ee75cc7a3ea2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/PEAA40707007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f892cdbc3566dc1bd75dfcae7e7fbc007f3a5b5ec88d2151646d718036fd8d. 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/PEAA40707010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342b6286fa70e92d058f383a331416f18d34c15ba2d8e5312140178fb0ad1a08. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/PEAA40707011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d456a53e7f015bccd5ef9135a37fc93a2d967283c480213d273752cdc900325. 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/PEAA40707012.
Olvídame... No Me Compares Con Nadie, Vol. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e076aec066b3d019b4639525f1145e465ed6f98f4b20fedf681951417e48d2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PEAA40909002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b0e1af8ad8f77b44674adafc328e138409714395bfc9e7568e82d111ccd1e0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PEAA40909003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4dd64802ed2584fe8c40e010341b31c0821747a1ee69ec6a846ec669495c4c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/PEAA40909007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb87a4cf1c0b73a907f1e633274a67b4d65bc4be1c1034f09680f78cfc109b6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/PEAA40909010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc038a69172e599899ee97a9e9124a97843e2e5a04242601a760bd4b3f32547. 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/QZHZ32091946.
Nos Quedamos Solos: 4To Concierto (En Vivo)
Bodas de Coral: 8Vo. Concierto (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c00ef33991bf6bd6df898bf093002736927b8446cd5ea2aec97fc7470aa3fb. 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/QZHZ42002304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c2f9161b0ef0179b789bcae9c51db636465c0ae3e7eaadf1bb57d9fd81429f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PEAA41212012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76b8c3f370841570cd407ba2aee89c722793be491040b125eb2417f487284f3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHZ32081398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06049ce1d40b0e16a4a630ba20793535715995ed28647f28d82ab0ab179b5730. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHZ32083966.
Historia Musical: 9No Concierto (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738994fff96f518f4fd21881c127df8e4b6c731d4012c4ba38630f580b79a706. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZHZ32084628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e8ee441a8d3dd86c5ea600ff671a3401c3e102a5dd9c2e0d0cb03bd3a0907. 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/PEAA41711141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22468c286e6eda81ca7a49738b988f8a922882fbc3d640ad42474e365d2c6207. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PEAA41711150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175885acc519d2473819958e2fa716afa5f337fbcb256110a7f2b69a0230798f. 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/PEAA41711167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0979bca6bc3bab467221e8d9aa5189569ef605988170c65ae4f238fc91bb9804. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PEAA41711177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187ace067af8085c58b0c8e206cdbcfcb203929be72d5b7df307306b6bf940c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/PEAA41711178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8018ff17f941f102b65b978ae8e644e6becd35b9c879fc031bad8e64434cafc3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/PEAA41711329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec6e62021c102a7881719697894fd15805584b329cda9301fb505ebe0a42a6. 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/PEAA41711245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce76a962ba018718cb636020c92d37a9c10be2031bc79c445cfb3fdbaff07bd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PEAA41711179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4a773ff6a78f188e5e6a3482741c264f717921a676f26bf188eb9e968a913. 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/PEAA41711181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ad081c631f18f7bfe82645dc2fe093c16455dc9eb7446df873b33f8d9c63ac. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/PEAA41711184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df39eb1db7daa22098c7e20f27d9c32afb6c86870028df7b1d15f061157e17a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PEAA41711190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ffaca59879f9e0741c6cb7b3e54e9f21aaed1bbf95daf13293fab91a9d156e. 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/QZW9L2328417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bcc3fd0b94dd71a13e889dd4ffc1e0edde957b1cb1df86f687ed17b3866d14. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZWDW2502747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083897cee50e48e5afbc2f615469073f2f304bb30b85c94c85622f7d70d51607. 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/QZWDW2502748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2acee4c664b1e2ca8a949b19454e7fe0c332975f1d6aba7406af8ed79400ce0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTPX2556198.