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 0x43ff8136b9f7c5c705b2b6021c70a09da87d0ea39a749e0506596942dec0990a. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/496aa701-3824-475e-911d-c063abf3fd36.json and https://artists.proofprofile.net/proofs/artist/496aa701-3824-475e-911d-c063abf3fd36.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8a6e8d2a50982e880036b95c8afe5a9a9938044112c376d2fd4a17e2077c2. 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/DEZC62331450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40666b668421174d1ffc6002e384f734b13db0a1775c954a6bc57e7f8bbf5cc. 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/DEZC62331451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa669aeb37fb494426cd451f1318fd0b05f6e1abd9b6cdce6001917d5e848456. 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/DEZC62325645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d02a6c86684bed2499611792e6bd246b67fb9d4d06ff7df994ee08131c0360. 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/DEZC62331452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f49b2a0684a8e67cd16cbc2c64baf6435f3556e89f18864a9dc74a318ff0ef. 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/DEZC62331453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245cc80fbceabf4d428d55be52ae3add8ade512272e0494ce25cb5ed1b13a42. 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/DEZC62331454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd239422240cb15efc4423f02417ba7808569047f9af3f1ed22beb038bf4a2. 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/DEZC62328684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b60b49fd616242b77ac3b6ca8608c617528c86583eb244f0e989ebab4a822. 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/DEZC62331455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84d7b0ec7bd1d6714158290751cd2412571f7247742bdc254e281e78020015. 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/DEZC62331456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4bfbb101bb5ffa219e59df2cc7d66b88a6b07502057c080f75526984d9978f. 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/DEZC62331457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f30a885717da04671525bd5914568a6bdc9434890d8b523e4178963a7488e63. 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/DEZC62331458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68325135bd9faf90b695bdbfd16ccbeedec31ac71a3622d29ff583ee2fb14930. 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/CH7812218015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a04c248882aca6bb9369361c347d09e6aad02a010c055b10b8f7e5e2920b79. 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/CH7812215453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da5bdb8341313ee6efb4f87e319136d4e708f29017a3dfd39547370b3c1b6d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812218019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4850259bd9f8e014e33b221925474d73351c7bf66ab70fa686ed269c4a0c99f. 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/CH7812218020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4734b9bfcc305cf1185c82e4581fd7f6ca6e013767700a2779c26d74efe26d4f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812216628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf500aa06210d6f0ddca0dbdd681217f99350c246f6db5796e3ebb761c001f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH7812218016.
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 0xc8cdc183081e6c97a1871bce6b63c81806e8658bd8fdac0e2317043037792676. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812236043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a07a650aafae83b5d82027d9c9d35de9c3b28408cd8c61dd6083d30364f71. 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/CH7812231681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f719336dfbca1c5d9d9bcb4d08db20dcceeeb5ede89bdd02b6b24e1f54291f. 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/CH7812227903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3863c9352e0190f770e51f3390b1505dae5d6da2207047a0aa912fcc14ed891a. 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/CH7812219915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa77c42af7e7f17821eace3ab8cedcc8bd7c310eb15ab159bbce06befece488a. 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/CH7812195787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9974ee1b67e1f58a8bfe122cc4ca0f938623eecaf56d52cf917be168c5f9669. 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/CH7812195082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a2429a91d1de9576491055782ce94faf1e36bc6a92d5caed9ea58ff8db6ed. 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/DEZC62499878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13869884c0bd5e6805bcbbfa382f802977be73c8a4aaa8af4bed54ca0985cf7c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DEZC62385015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8994457f509b481a11611fa33149d3c6f39754c530ee0a891e0f9e67b70b20bc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62389931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285af3bdafe7f63fdcef7856e77ed490e92e114c617409cdabf31578577fcab7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62493146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e6531752e4869e78f8722660bf238482c8c2e993d5c8bff8e70be4da93fdc. 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/DEZC62499879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dd23e59e4065019f03d9d9649052e19210568041df5710aae1b7821d044f6b. 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/DEZC62499880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc257ca2eec6d9137aac38b02079c47c43cf93e5cbfbe41712842aed0faebc67b. 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/DEZC62499881.
Codex (feat. Hanybal, Ramo, Hemso, AJÉ, ZINED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b965a17bf9b9036e84ece063429fe0a348218d149507494e5bba91e0465aeb. 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/DEVY22100130.