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 0x22d2d85125dfba24772b95938ce9ecc3a218095238fbf0d91f1b503b380b0851. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a00fb66e-4f0c-44a8-811a-d35f714633a6.json and https://artists.proofprofile.net/proofs/artist/a00fb66e-4f0c-44a8-811a-d35f714633a6.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 0xa68f3f3a24b372ddbbd34ee432483e57aaba9e51957aea4c2a784aaaa1becfcc. 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/QZHN82522197.
Merci à l'univers pour mes mauvais choix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f3f3a24b372ddbbd34ee432483e57aaba9e51957aea4c2a784aaaa1becfcc. 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/QZHN82522197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475edf9245dfc6d81cd3222310850491bd087490ba23ced91640fe985be0ee8c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:58Z), 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/QZTBC2402515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13959bb26d5ced076bcca8e97a0e569e20bdf2241d93961acf481908dd1e1d8f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZHN82523731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acea5ed5e56bf28cef91fd46045bfd2f8b3122a793c42c1fbd098522311f9d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:56Z), 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/QZHN82523743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a2e430bcbf6f1c89da28b6a517843469e2d2bf75be21d7ed551e017fea70dd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN82523748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabfd45f6e095ea9528304400c2af0bf1f1a45bc7faa9c5174f018e4dd0f025b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:23Z), 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/QZWFF2569542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed25b08b74af80756f1fc16e5991827ad339044f48746d8a7fbd79a5c7f76730. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWFX2570269.