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 0x8103bc9626394455afd080a04210ecd5459cacac2ffd7479d74262ee8aa2ea93. 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/b8489371-9704-4556-9362-9f8ca1df41f1.json and https://artists.proofprofile.net/proofs/artist/b8489371-9704-4556-9362-9f8ca1df41f1.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 0x66f34ed02aa807a11b4ae458c2e19e065256fe6cb52d23f73589e332f7b5f2f4. 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/DELL41800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58caa315573481e5f124d3a44bf378895fe2a22676f6a653e0caee1f7616f0e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLPF0289569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb924eb7db0522441bc950cdbda9ffb6a3c0fd9caffb4afd97ada3a24317b61. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBLPF0294470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cea285e9427784397eb7170fc7cc1f50bbe8992b5904b9faca014fb208d5e0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:00Z), 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/GBLPF6721011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9d3d76935673c2fb775197e23d0d69e8fe9ded409dcb8dbc6b39236bdb3de. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBLPF6722094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cea285e9427784397eb7170fc7cc1f50bbe8992b5904b9faca014fb208d5e0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:57Z), 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/GBLPF6721011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e40698b7fb2e6b7f4c071e49e5f05a55ed40d86dc906d6d18f6ccb8ce7d20. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBLPF6722095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71302c683e1ca5c62ca6424e09ee30e16ef33a149f3d727c176724d0df3074. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBLPF6722096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c980ca80593b4c68475ce1e99f7cc9db5fe8df04cfa4c7770c1027ce7f1011. 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/QM4TW2354504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e148f063b592ec5b5e01bc890bd2e3eafaa55aaafc2fcc3cfd905a2fc51b433. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM7282370795.