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 0xcde8bf31d80217e374268b76beefc89984196ae38cbccb2947629ef42eae6a83. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa844af0-1f7e-4fcf-9f63-f199636c41cb.json and https://artists.proofprofile.net/proofs/artist/fa844af0-1f7e-4fcf-9f63-f199636c41cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música de Lluvia para Dormir Profundamente
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 0x441db7364d5b65e1875e0d7b4141d1e85bb76cbcc8aaa031660fe08de45b695f. 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/QT3TB2420958.
Relajación Con Música de Lluvia para Dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce051f0ee34a10e074251389e2691e366fbf80e8f80f338cff4663ec6da2c0a2. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QT3TB2420959.
Sonidos de Lluvia para un Sueño Reparador
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8043b970e37f4cd6878447da797dfde260cee0a9f2dcb1622b5db02424edaa54. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QT3TB2420960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd4d3e29a70f270144edc4df932406f3e070d03728a1156527b045e1581204f. 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/QT3TB2420962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d67b7ca2fe07b39fd89ee923fabe2c75510625fa7b92622f3b4a2cd1630fe. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QT3TB2420963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657ce1f085db1296151aa12d7e2d18fa810614b3fcb1e697f98b6bdb760fc2b5. 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/QT3TB2420964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667a980812240bd19848886f6f53ff34255ec6202bb496c64f96d4216a7b85b1. 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/QT3TB2420965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e98695c9964c30c231cc3684c05f3f4b22443fd85c8061f118fce5c99c8e0. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QT3TB2420966.
Sonidos de Lluvia para Dormir y Descansar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9d395958b8baae7618f9efd082acc05d9805bf0f8d3f1574332dce45e44047. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QT3TB2420969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbaa7c5b527c201c75acca117c1e59df64802a11ee13957304ba6f3a709c1d5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QT3TB2420970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa0a8dccd4a7fcd07aa2bcd98ebffc131b47b7287d5558bef24b5921c59254. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3TB2420971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3812913885bbc3ff20e1c17db50aecc1695b06e6063e5b57955852c7283234. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QT3TB2420972.
Lluvia y Música para Dormir Toda la Noche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec126ade48fdf0dd81a49cf0ef5e81faaa739c0dd187359d8e06637851afdce. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QT3TB2420974.
Música de Lluvia y Naturaleza para Dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502bc4b97370a8186ba1447d6ecb9f3dd3f163348042b51816c943a0072a6ac9. 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/QT3TB2420975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb21d4d11a9f64d7a98e1ccd6a320246a6da5c3c6e121528cc0816d13ce3b1b0. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QT3TB2420976.
Música de Lluvia y Relajación para Dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c851ef903d55d660753014154ba974b60629b99089bc5c7f6740929c88dde92. 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/QT3TB2420977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a9640c2f04ff6dbec95219f8ea363836afa562354e6354f855afb6f45f20de. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QT3TB2420978.
Música de Lluvia para Dormir Rápidamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658e155068b99d753416112fdb1bb2325b1c426163e837f9bb32406d0f26a38f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QT3TB2420979.
Relajación y Música de Lluvia para el Sueño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2540ff262c958f532b8834deaeb4d85ff1e156dd4d48bfdceaa8aaa958a64f05. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT3TB2420980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2f60e2c98e29f37fa7c719124fa9e00681dd905f58ebcfb7bbe0659e0ac064. 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/QT3TB2420981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371bc435dadc335a6b234dd9b4334edf2817712ddcd6ace313c8ede3f530982. 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/QT3TB2420982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eb004fdf7dd21abc17d9edd7d1d2ff05c046c32820adfd4092582cfe70aad9. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QT3TB2420983.
Sonidos Relajantes de Lluvia para Dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ac73f0e9fb68c922a83ecb7d986d06cef03e561b986c59013eead70ddd6051. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3TB2420985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea8b7098531a1dcec70694e6b545dc745d1eed11079d5242c4f71cb8ab47d3. 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/QT3TB2420986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0766db5f6925c9423fe3001e0a8be205a5fd9b48ce5ecb971040d1c3f6a3625. 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/QT3TB2420987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3d6c844fd9ebf6fe4fb51dc948267c982b782ca5e8c3c071c6b96d7f55fb4a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QT3TB2420989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097befe48841e61bf40f6c2b2174766e5dfd207964ff40c5a8c0131357bd76c. 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/QT3TB2420990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2712eeefbb37f4281685b6683c8bab291d106b569adaa00170f660d240910975. 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/QT3TB2420992.
Sonidos de Lluvia para un Sueño Profundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0fac336bff37c4db9eba4cdffe37b5ee76dce3118b9f6552731babe0bd63a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QT3TB2420995.
Música de Lluvia para Descansar y Dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef01a1eceb4d4db06b00700c542738f27868401d54889142efac125d0624beb. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QT3TB2420996.