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 0x5f88fbea17133ebd7df2d4f25b999529cc9eeeee33da96d148055363cd56ca5c. 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/25a1626c-3612-42a1-8678-49534812d1e0.json and https://artists.proofprofile.net/proofs/artist/25a1626c-3612-42a1-8678-49534812d1e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Let You Go - Never Say Never Dub Version
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 0x270bd5d352c16ae54a5fb4ace4c77631d10e7c989cfc3425bdce4e88fb117f17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEE10609691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0628d3a6e763a1ac5610da9f37771d394e705e66ce873188a4b089b2f40121. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEE10609692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49faef7425165f21985a13332bd5db6232a91d00311fd942395df8f855cb48. 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/USEE10609697.
Sincerely Yours - Special Delivery Mix Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f10aba977a4536981c9cfae57a73c9ed36aa5161a7253bac8260bce5f2752a1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:48:27Z), 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/USEE10609696.
Bring It Back - Bring the House Down Mix Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa203e23ff94016413c473bbc4957fe9e4c50ffb28b81cde65d1383601d118b68. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USEE10609688.
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 0x8a33aabcf93d11a03e190a13d74c5b387ef80b0db82bfe488e20edd63a8e28d4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USEE10609689.
Each and Every Time - In the Mood Remix Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b86e95c0646243b52c9678c7e0c261180b4f77b2b52341b7278272b547a68d5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USEE10609690.
Take It While It's Hot - Latin Fever Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd592fcf1a41326407dfe14a1f3d968ead614dd3fc2f94f15af8df3aaa1f6c02. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USEE10609693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc972767e44393207876468c83ec7f65fd692b22201c0cf71f1c7a85c82235aa9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USEE10609694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57796971825abc85ae580f957847f1231a74274e5f3c36e032874a973b17e8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT20301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac9795d48bd244f3afd055e6d56c51142026550b221f7243862161dea1e5820. 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/USAT10000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b68015abc4457474d697c4edaa9b09100731cef93fe86c492a74fcebecc6e02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USAT10000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a28f1d9facf9f40dea470ba2cff461f41767436a3cb511d3150ea2661cac214. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20804560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8135af2d65bcef60568a51b03382a270e670b905359f07ce4741cb4cd4a8fe9. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USAT10000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13831f28710b1a363f66e476e4eb428c2b672a28e546bfb215c3846feac347b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT10000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a04c437286265503cfd92c6b5f3426ade989c1ad0ca9edbf5cddc9bdd43904. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT10000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03075e9a90e98f7f8313b0fdb0abebe7f263e905003694529b464bf1a18536d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:17Z), 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/USAT10000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d78130e633f11743f52a8d564e3f02beee563b9887a56799f90fa69b4d869. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USAT10000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5942325382865a7a5e066552d6306841f601de927354dc016b2a945b93ffef35. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USEE10183452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732b246b5a0a0ece627ba45be5692313e07e5e94537f1b09e9de85af395a14e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USEE10183453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f98a6dedbf6ed851d48bbde2ab161fdc9bca9597b6857d644a02473879b6a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USEE10183454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b0316beb5bfec94c6bf4ea0d90dd1e2038386316f9981eb2cb0abc3312ee8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USEE10183455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9ade3d1f4ab7a34ae23d64f41c058ff7ee533a8270f28bfbfc3e1245123624. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEE10183456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769de59a177d25cf073701a632cb39f9bde2986a61461bf60f44dafa5f7629a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USEE10183457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93317e0135101fe2e9bd6c4df56e2aaac3908cbc2ca903320a6b1317c82cb98. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEE10183451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca47e1de811e935cef2ee2b56bed78a634d7a08af14ac0c4fe25d26e52246dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT20180449.