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 0x2e3aeef95746e180251b4a807009521947d59abef479bc14526325a8ce5f076f. 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/0b892dca-79b1-41fb-94fe-02574a40baea.json and https://artists.proofprofile.net/proofs/artist/0b892dca-79b1-41fb-94fe-02574a40baea.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 0x4399961b1aa5f17ee5126bfd9084efb478afd73af3c82904d223fd878d7d0add. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6M2224264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa85a98077a800c3a4b8b3ce5821468ca2465676cc99ac9f36ac823f8de5e529. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWR2254968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e190786fdea7bdf5942747d13d1f6fdb638407cff0873d6e1c9aebf808a7fdc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/NL3WT2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbca13a80b9e09f07b03bb2272b25ab0e28b6ef508ae07d17f70d025f02f39. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:13Z), 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/NL8KK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b544a5b7296dbe87d9784df1b70c08c26151b233046b61a3694db8bbd4ef5. 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/QZNWR2379279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51f27fe9cc84fcd4b276b5096bf0785bd220a9c5ff3e5ce883912a833b3d928. 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/QZNWR2379280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37c1069aef7ad28ff8ebe6d120924e4051aba936838813b95f9678fc46f231. 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/QZES82433238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6572b43bcb55582b1adb1954af1623b5c16f91443952b90cced60313beaaaa77. 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/QZHN62401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f0a50f37f337700a06b77107eae083962bcb87e31b1bf6d489a8561ec3fc63. 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/QZHN92496487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b6683321f422da7016dbb96c07969071b23ff9695f4d4942d6119622acab2b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHN92496489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1da0dcedd35061007bcc725568f93144d95aaaa9d21d9eeb1ff6a03ceee8f3d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB62409227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fcb3ae8f0e7eff8519dff16ac9647ce9999e85860f7f92f283a26940d56add. 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/QZZ762443306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3544288845acbc823a93fa6ffe9eaee52786091320d2b477bac471873054a490. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:40Z), 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/DEH742517289.
Freedom Inside Your Illness - LS41 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4d344a25286d3668d7431ddbbf76b8818b0362ebae80beaca3f2ca3442301f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS632356291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e43e67a165875ca31dbc1a32a09f59a881522f06d37af310de24be141a92b. 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/NLCK42238930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba08bf636b6ae28bab70deaba85d9241ff8d83e8355811e406e91063d286248. 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/GX3Q92375177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54d657dc4b8f6077f9f98dfa96df8feac2ea4bcd0e090db089e5d33eaf6142. 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/GBMJG2324431.
She Likes It When I Choke Her - LS41 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddf934bf30603cde23e61a4b907deb1072d6226009dec767005724f9b622122. 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/NLCK42416658.