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 0x2a768c37dd2afd1350d4cae403696671f7f7169b0876dc5f0ed2d226217985c4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0edf485-9a6f-4d97-968c-c7cb0ffbd59d.json and https://artists.proofprofile.net/proofs/artist/f0edf485-9a6f-4d97-968c-c7cb0ffbd59d.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 0x3f73673cb5c64ef3df3c295ab698786eec7318d1304a9e4ba4729c96dcc2d9cc. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR6F30802440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb1300c46cf2aedf4c928ddb03ab63e95197cc9570d8491f2edb1f83c666ce. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:44Z), 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/FR9W11507825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4fc40302ec7afb2256d7ddf8b1fd55d5ea3d0960b8118363d5a73f9e495872. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11507833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da571a5b12cac6e3185bd3322969b28f7b5dae5a1ab3c56ca6ffda05da7476. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:20Z), 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/FR9W11613192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04b6c2b1f9bea8128b622307d8d33e564017f239e027a9c617d291b416c89f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR9W11819126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b2ad4387fc347a07374a11a53d7b1e674f627aaec4283b69b4ddd29680888f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR9W12304717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c6d66f65a21ae0cc4df27848f2a52b2c4a9c1591f0ea6b677cca2a159ad90d. 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/FR9W12304719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2332a77c994fdee080b51d7ae458e1a9ef2d5ef471939d4f6934a930d5aefb74. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR9W12304721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220adbf38bdf7fbd4a82e16b21999eb7114f0958c57d83c9ff8a29ee7ec63fa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR9W12304722.
Ça ira tu verras (Live à la Nouvelle Ève)
Quand bien même (Live à la Nouvelle Ève)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0884ad0d741d853418bbe530c3ed951deb6d8880242c4e793748addca0b66e51. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11507824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064baf80ee3092aa8695a58c1fb63c356004be3c146d05890ba7879a0a58fb3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6F31333160.