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 0x681b40dab1a3d76d5236e0ac5ed22b64db335f7577515356befd7cefd09218ee. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b0684ab-706c-49ce-be4b-ed2010997111.json and https://artists.proofprofile.net/proofs/artist/7b0684ab-706c-49ce-be4b-ed2010997111.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 0x7ad11587c12c55cf7d402b57147b5824268dac3fc952aa2bee9c2939521b0546. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBKPL1956030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31102e88a5068fa0457ecde70223aab37a047ceba69a344e58e99536485c32c. 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/QZHNC2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006e78175336b03d9849b4b160ec31b60844997ac26d36532d7c116bcdf30a4. 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/QZPLS2413872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afc2e3d640eab953a7aef0db796f2565d987e2484eaf11de93f8b8575186290. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMEQ2371399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6e5118a56d598d43bb0b8ece25412786a5e8e6cd0bfdeb87ccfd125cf4d5a0. 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/QZFYX2181202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867eef30c6e30549672daa358c2b58aadda48af2df7a2aad5625a0e82260d12. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZMER2051859.
Siren Head (Make It Out) [feat. Rifti Beats]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e20c77b171faaf24b7ab4ea6aed10989bf63ccb6ca2ea53ec89e972c8933327. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMER2051860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551578e56fbd7a7be444771a869a388e655f1e8bb290bbc78af5cf4998a2c2d. 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/QZMER2051861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f99e6cf894305721d4e225892daa0164a293a749111d46e9f31b4e257b718a4. 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/QZMER2051862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8658ab042a9688e628e637b0c99d9cef0619d482bc5672330c5400c3e2c28c41. 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/QZMER2051863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ff184668bb23707a497d5354725d7df4db301546212aff94512e882959c9c4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZMER2051868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f1049050d70c4d48fa4ba5cd061bf57bcf570fe8ff47a06c143efe25b2f4a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US92U1800609.
Ghouls 'n Ghosts 3: The Nightmare Before Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f65d2e80be72c606cced9fd62c95fa1b4eb642cf06abe1c055bbbf871530efc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHM21596164.
Run Away (feat. Kadeshflow & Andrew the Only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d33fe4e069d2e4625f9be85fdc1723129bcc98def0692d35924bd2049addc4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM21596167.
Monster Squad (feat. Kadesh Flow & Mister Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf24dc3884f08f50ce1c4de7ba30f123355b7d65a83877de53e504039f9fddf. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USHM91318088.