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 0x8171dbf6460c7191909d4cca950466952e97b29a58d668a5e036de06e5b40bcd. 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/5f645c06-a57a-4188-9ff2-10c4b4aa2fe0.json and https://artists.proofprofile.net/proofs/artist/5f645c06-a57a-4188-9ff2-10c4b4aa2fe0.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 0x1853fbd046491dca027600a02918a2ba9e94edca30bc35d7c4299a86fcc9f235. 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/USA560557454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a4c8a813ca4ce730fad2ddab0369c48350b1c10bfcbd9252941ce5bde2752e. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBNRN1161603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32a5384f486161df01ea5495323e342be04a7d24a645662db1ab4f02e9d04e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBNRN1161605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc980d7504d3b619e808e8b9f61474758224894ce701f46240cf1546cf3e1caf. 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/GBNRN1161606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e11737772ea3a4f4d2ac454b359056b83b3e8a3ecb0c1c6f53a96fcda54da. 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/GBNRN0733706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5032458b583fe2867625ed7e36dc3e777540bf91a13da388035f36e23f08f1f. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/GBNRN1790723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf678f604c37441989d9ee161218d84926de05fe976a129e56ef81889a60358df. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBNRN1790726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35d50b8e4788eb643c22dfed20935e1f6c6a333f5b351d8ecb74cdc1bcf3374. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBNRN0733804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0851a5008da47ef63adb8f9e8738ff13648046f979910a61272be582ec5205. 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/GBNRN1791075.
Multistars (La phénomène interprète Ominga / La perle noire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf5284abe1639dadff157825b9d0ca21afd70ce8f44b0e88bd5aa10d5286d1d. 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/GBNRN0733805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88748ef000ae4bcadf58db230f286c452c68240e51981409d9e73ad2cf0f5e51. 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/GBNRN1790315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e066bfa7e00b84cf82fe4e2be373a82c7dcbdb9ac5da8b7770b5c823d32c4c6. 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/GBNRN1790321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e066bfa7e00b84cf82fe4e2be373a82c7dcbdb9ac5da8b7770b5c823d32c4c6. 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/GBNRN1790321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65ddce5c9ff3155548ebffc1ac55c84118f2dbbeba3150798f84668657ca636. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBNRN2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b09d251e10ba4bb91fd53fcc5eea76cd027b4e412c3c69e8e3fd993a39702b. 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/GBNRN1790772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d81e3d32caa93dd372c91c0c8c55c0cc3d005df44f4ae9d80b74d044ef1df. 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/GBNRN1790775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b0d2ebd9205c0df186793ac766913537598ab73c4b902d6cfad851280f9a1. 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/GBNRN1790776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910464b5501079bfb2a5dee7b85e1bcc043ae390fbb70157be795c51ec746583. 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/GBNRN1791126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cbbf96ad35b53b287ee3fa7e87c6cabbda8d9671505cf6b1e110710ccf968f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBNRN0733801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c6ab94beb2737b20563cfdff7b7097b63eebc545f4b60a5db41e1f3ed8ce69. 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/GBNRN1791129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58da52172d28ed9c5ea6c77764c4e40d779c834a42a50cf41ea8020c8ca9cc. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/GBNRN1791342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898b881c7d503709f81f18f0e6f46e0e501d8d71493100a0c785c6ee737242a8. 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/GBNRN1791346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d563d72df355b773775ee0a472da64edcf80c478451f28b6e26a98ef0e0dc. 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/GBNRN1791347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e70ab2f848e1f80282b357b9bd126ba604a8f3f2e250878bb81bd50342611. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBNRN1791349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328c64e62289a4a99555043cb9d8bc914a8bcd432cf469a5b2ec5802315fe8f1. 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/GBNRN1791351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377369dbad00f522fbc8278d7b86f2c9b294b8a872a28dca07703a3abef5a6a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBNRN1790867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b369e6ef38aa927f58b203d8c923b7ca0058e2b72d8dc5760e1ba4cbb20119b. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBNRN1790868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abefa94df4425eacc6df549cc7c6dda85c4839bc1ed4eaa527c8c960a696639. 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/GBNRN1791003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0011820f94cc113415745137cbd4b5174e2c306361f7acf38cb9493bf2bedaf3. 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/GBNRN0733708.
Bel Canto: Best of the Genidia Years (Congo Classics 1982-1987)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc98514732291c5f7e621c3047fbb6078d3414a45b9ece085b4620bb4c05b1. 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/GBNRN0733707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04ae3ab6a24a22eca966a11e0b7a81eced110fb35363aa0ae4d61d0a6758fd. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBNRN0733808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d65cda42cd63cb920bfe66fb8fa76fd43c31eb8da5f366b645d2ee949678e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR94N1700180.