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 0x0411c38435ade3f348ef6b6f08112cc90f9a6a9bb563ee05b67bda92ebb9ac27. 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/d5945b72-5281-4bb1-8278-8b5328912824.json and https://artists.proofprofile.net/proofs/artist/d5945b72-5281-4bb1-8278-8b5328912824.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Welsh Nursery Rhymes & Lullabies - Series 1
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 0x192874b208a30d8fa16fd74b11df0d7d2ed8df00afdc88d927f0b104890b5e3e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:29Z), 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/TCAEP2040642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b087677a6910886b91b7453678d7487b165e472b853992fbaa1f7c141baf007. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAEP2040646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa461735632efa14b31424cdb1e096ac7517fe46cd921985471fa6898d2a2d6. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAEP2040654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af8932237c973e748a69f533d600731b71ae6c9b4888b4a969ca1edc2434130. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:58Z), 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/TCAEP2040658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8071977f43280b021c161da2e44a63bf0606a953a1ba3ac53eb867dac8f8a3b0. 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/TCAEP2040659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca642e810af342c37dcfee992ec6ff468be6642b58cd17fc8e660608082d00c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAEP2040681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec591662bd3f370285f45b095c6792b339a26ce39e4667b1c68a69579d20894d. 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/TCAEP2040687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce3990c14e7dfcc4753a932affd080c3ccfcfe90eac265ac67ded75e57dd76. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:02Z), 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/TCAEP2040690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7276a3dfaf51aae30f2ac16d525ebf927cf003f356b3ffa2c0ee261cac6d1c. 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/TCAEP2040698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aecb1d5619194083558e16e40ab35fbd0b9b3ac7ee849b4f3ba4d82a993d77. 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/TCAEP2040703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bf7ab76621ab7c0bbabcccc50fb337a01d9c29993d36080520ab1ee666db53. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAEP2040710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb56948e1d135674bdeb2b54b90dbbb8d8566f3b3d1d4f97191789cfd0c201. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAEP2040719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720b1715999d2e77a31bac72b2c23bb5fb15b5c508345dfcab20a6dee9a32ca7. 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/TCAEP2040784.
Welsh Nursery Rhymes & Lullabies - Series 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f41824b470b5f1885899ea97915c6fd77bc0023f5ce7fee83eb185165d91027. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAFF2026507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ee6fbd4d0778bbb20affd76fc2e7500767c3414551cfd61ba55091d21d5b28. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFF2026514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbdd02c2844d8a1a11cde6a8f009bc27197f845b71d2e507c0f5040874823fe. 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/TCAFF2026528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c7e843dd94b7c9a0ac80cb62f7d0e6509ee5817d48c26fcb8cc9689af18d1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAFF2026545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9aabbaa64f5e36b1ea1a3ba231854a684c401f26eafbfda716648beb6c752e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAFF2026551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc60e836e41ce320abdecb13639bf6d34786326a8cca3f85d91d99d44ac8c1a. 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/TCAFF2026567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe1b4675939e7b27efc5a84d38b50fe20b262ab3d628c52f869114013dc1f63. 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/TCAFF2026575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1f51e7cfffc5def770de92f9a31ea57cfc71d9a8851df7ccda277cfc6d1404. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAFF2026584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9db99c0524fc49e6201939c99afc13f61be67373ecd563a7776220371dbfb1b. 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/TCAFF2026618.
Welsh Nursery Rhymes & Lullabies - Series 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8f196f69bd8920ab77fd76f81fc711749960d9478cf869747cf9bb9e9fb5c. 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/TCAFF2026287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb607f39b489000de7417b98b8742e25cf11f8c7183a5e39ea9f35f12ff5d5191. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAFF2026294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24fc22084e26e88fedca66cc5ff49633f3bdd752dd477f61f1f2c759f59bc2b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAFF2026296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00db60ef34559c6d6788700c98e6bb0d6ca751477898b51aed709fbf246c9d9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAFF2026300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83591e20a4e68ebe6d81d1eb756b38fb3189bf072156cb1972d0227cf0f2b96d. 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/TCAFF2026304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a873bd3145a2faf655e68dc5289cfc96e5fc4c148e317cf229e09d77ed3073. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:40Z), 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/TCAFF2026309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09ac116023aeab9e3d4332bfa4368ede9b2945b13fb3b6edfecad7267156fd0. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TCAFF2026310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8ac17e0aec154a9b97bc296eb4ca0b47b9844fe5edc209599413b7bbf19ee4. 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/TCAFF2026312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9619c283ffa4f5ce8a9ec737aa2c16c9b031b58c19ba43f97e8167db4e52280f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:20:30Z), 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/TCAFF2026317.
Welsh Nursery Rhymes & Lullabies - Series 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6589a8aa58e9606af49ece24173fe8a43cf3bf978a767ec071c204536b40c22f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:26Z), 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/TCAFU2198636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa582a79192ba4be50ca97117a385019d4feb747f887c20835cf3913f9b3da84f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:59:18Z), 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/TCAFU2198650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f885a875f486602e746731805767b0773790215838052f33a3e672e6e2efb06. 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/TCAFU2198668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185cc5e42d9afd3d7cf12873c03e4242104ebf7082b409d7360295811f0afc3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAFU2198681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1103e6b9cbf319223407b8a0abecf849fad5d6867b94e84c03437fe9f05704. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAFU2198693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ee635b4e0a32df8c80251f58efa0eeeafcbff9bcfd862e9d63fb0e2ad33400. 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/TCAFW2117675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f27b533087ae17b7f918acbfa2b6d7757c6db002e79dd83905392c34524b41b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAFW2117689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396081be388f3afff9a4edec721cfda9460da09f771c0a8294d1dc1471164f77. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAFW2117696.