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 0x0f83bdb725790c6c1397a39f3c1fa7e86b3192746947f2cd4e69d0f09426e945. 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/cff4315b-f975-4146-bccd-dda046d5864c.json and https://artists.proofprofile.net/proofs/artist/cff4315b-f975-4146-bccd-dda046d5864c.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 0x0ce350b0efa5854ba610069311d9451685ba84c3a43aca7babbd1e65b1fba878. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZES62079302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb44f62554a6e8f4a61bd2e150ca0d73229e4302ab198226a4d55544c3bacdb4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:12Z), 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/QZES62032991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65645180aecbf698bb083fe099ceb9895847cd537c7d955ffc103073b5ba20a. 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/QZES82048117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0414c124e43625d6a88f54dd5c006e77abd876f7888b8ddb0415e29c5d618f5. 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/QZK6G2014251.
My Way (Mastered) [feat. Cordelia O'driscoll]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa52ed077276cf261d69f21693e8cf04eeeccaf93f13c4f25989e67a03ffa80f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZRP52127921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb51a3a5963da603d578a567d082a82fbc55760a40487a079626a5808393dbfd. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZDA42377416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb2c0ab6deb3d81ff987f5deb232d56dbbbb5f8cbd73d60c18e77fe05b70da5. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:37:09Z), 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/QZK6P2322647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879fbbc1285576c4973b039f3fcad2e243022cda937a1b607ca59d7bc13cc317. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTAW2330722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4ba48d67ccf46ef2e6d6a3cc13e805edc9246acd6b7c2b03cc1cbe84b63c4. 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/QZWFF2373056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81574b0bf342bdd71df7701023273dafbb51ee8dd90e3f79d4c0a571e35b9d95. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNWW2481790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378da77827bade0d76ccded36d724778da95573b06b7a07190588d308ca49e79. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZNWX2464845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1af9db912cb1847cd05493bf7369fbffd81d24ab2015b21498b5cd3c4adaf7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWZ2421520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438f3b4bc8ad7bda6935465f461f73042955d7e1e2bf256ff3cbe8dce5329372. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAU2445995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a5cf3d483515ebc31770ed362489e5e17d70e79f207bb54e28b40f360aaf2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:33:01Z), 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/QZRP42406310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7909968aa737bcc0afa3f09fdcf64644e4d72998a36f4c4385a7d8d1d3ec0a0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZRP42592270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905049c18793ac30fe1ec17d3fab0abe28fdac6fc339c613b6ab48714f51b486. 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/QZTB62521542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e333fae870e7cef9c8de0176fa6fb7afe706ab0666f7abf1754f94f047b5a9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:18Z), 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/DGA052535256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1b485302e879390948a8229ba30d43a003ad5b5bd62736ddcddf0fb2cec0b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3F22529007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e995eadf96b734a4d31ca0c5c00229d3e1a488850915e85681e7f174bbae759. 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/ES8741622108.