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 0x0d79a66a3fc51ec21689ace90f1d33c50a56c6f1f55ff2c9e387224742124912. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd63f90e-1e7d-47e6-b96f-de5f9d8a6ee4.json and https://artists.proofprofile.net/proofs/artist/dd63f90e-1e7d-47e6-b96f-de5f9d8a6ee4.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 0x9c9fe5c252911f8eb651a7af754ae95d81a939048cac5b697b18de9733e68538. 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/GBMA22452384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdc97443b4e87c73ae3a33f5ec523600d122c52801208c3ba2bf24dcc6cc12. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:52Z), 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/GBMA22452385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc46aaa599598c5a004ef4c20dfc768e6030b089e89ad7fe2e4d350c32b64dbd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22452386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987697ac7f69272749bb1ae5896adf45536667167d9da8bc3e7ac301cbffaaa8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:06Z), 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/GBMA22452387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821605e3e283ea8d6fd9494fd80bb37bf24c6e3fe4718ca0c3df2ed1be2a0ee9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMA22452388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559b25f8a2aa4773eeae1bc39e7039bb4dcee68b65220c0c50c5dc744ccb6427. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:59Z), 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/GBMA22452389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5112afb693b3c402059318a1a29fb6d7983cf860a6994ca40320512b3d0aed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22452390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb93757701bf39f3f3e9f6ca23dc07d5c4fbea985e0c2b27f801f9a872e9bd8f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:52Z), 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/GBMA22452391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2ca7d8e273c2b625d133283201a02aa24cb15d65220cd39ac617ac18f04fea. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:31Z), 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/GBMA22452392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a087ee5d798f12156ca2369557c1a826c8e168195b8f1c7de40deba9685672d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMA22452393.