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 0x9b27eb56b2ea72df2d0d7e5d323ef054c29bfe83de9d6a33a4cb872683e8b74c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e35b4b7b-68aa-4956-bd39-f814b4c06bef.json and https://artists.proofprofile.net/proofs/artist/e35b4b7b-68aa-4956-bd39-f814b4c06bef.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 0x9c1e248e2b932a30b9cac436cdc03c84ebac6207f17b3ad69a36ec9a8dd4dd6e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:34:18Z), 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/USHM92284519.
Macaroni with the Chicken Strips (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2931991ff1ffc13b8f0d1109960d8db7ed906b536ca5ce6bb1191bed457953b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:10:31Z), 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/USL4R2206577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0258f39455d7d6e053c5488db653803afac1a001d93d876e16bc50c4d4b6bbc. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:02Z), 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/USL4Q2293276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a3232b4810072317fb7ec503472ea66e3ec3002ffedb27cfe5961bee335ed. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:42Z), 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/USX9P2395112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6270bec1e373926abe63f9cd4a248da1e47cad253c3735b9638ba9b4561b4fa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USCGJ2452746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c308ff7a0426615e318ec31eefac46762419a119d631520bbadd13007f5e01. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:30:37Z), 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/USHM22501799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9042e8c83dcf68d0b1e058fdc3e411bcfe002c030d7583ae511bc9b29b853784. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM82525136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eea551efd764e9fe58230a81000ccb9a9e51d3af271ba73ddc9661379ddff8c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM82525137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e10467a3dd9a5441b7fad1dce531e63e3a935d6b4a0e43d64dfbe21c166d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM82525138.