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 0x46c5b97521332e6eeb3aeab21c2cd7fe26624814a4911ba42851a57c594d15b9. 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/e2426c37-80f1-4aac-b4a5-9ccd1d109191.json and https://artists.proofprofile.net/proofs/artist/e2426c37-80f1-4aac-b4a5-9ccd1d109191.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 0x4978c280d0ff6e8b649e39d03359acec1c6f9a9471cd19ec38ca5f5c2c26e592. 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/SE6132171887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577fd8c56a72799e744edb605bf60c6d5ffff45bdc46969090def2cb47d3c8ae. 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/QZGLM2534775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16c51e217d83ad0c4556453deed589d023598cd33d47b73912c1c9181bafdf. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:25Z), 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/QZGLM2534776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfd1d360d47c7bad3129ea94625c785a91ca89932501b7e72e99096c3229167. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZGLM2534777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8528d10d298b7fd2a0ec570e1d0fc4ab528b08e3053f169b96a64c3f8f45d30. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZGLM2534778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf76ddf02a18b56cba4a88449faa6503b8166cb56fca067fbba1c95ad11bc02. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZGLM2534779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52a4cc4ae734f1b4b9392c1d02f3f731d406a0f9e5d52713c44ebdae5d0d98e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZGLM2534780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb38b9b9fb2f4c9c97d2708fcca8891dfd84ac634f73f71720b64c04098921. 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/QZGLM2534781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d737b63e995f52c64cf5f2c844a1a2ce3855f97fe5388aebb721ca37da28b8e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:33Z), 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/QZGLM2534782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69a4d3fe8ad0554a7ed01c00acb276d60dce9260a43f6bbaa7772a69f16f150. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLM2534783.