Ratier-Figeac is an aircraft components manufacturer in Figeac, France. From 1926 until 1930 it also built a car with a 746 cc overhead camshaft engine. From 1959 until 1962 Ratier made motorcycles,
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 0x256c89585b30147220a6309804c2a36f32da6139135befa499e21218a67877fd. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47feb7c4-91ce-4d33-bd57-db0d1ab11f92.json and https://artists.proofprofile.net/proofs/artist/47feb7c4-91ce-4d33-bd57-db0d1ab11f92.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 0xaa0a9814c004d7ff1cd3d2be3df4e421404baf5b34f06f19502f61dcbed905d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITV262400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c948150d339e8a065537551d9a67cc17612feb1f51963f6dfe173e9eee137. 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/ITV262400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f030bc876db12633960a531f567aa04367b59816e488e5a7e7e1066552dd3. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:13Z), 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/ITV262400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe88a63991d2fbe05899f630e08a9223b5521946c498d02fcbfd235f8aefaf88. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBE72300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269c1a06bd32a1240f82f27e2328681ce46551c4d2b44bedb217c4fc72d33d3. 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/DEBE72300947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8027b723504c491778863ea0739ff973434428fbd3511a85d752291735d05b. 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/DEBE72300950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79705e690d2a5cb17cff7ff3976b2255c208f255556cd68f3640dd8230d747b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBE72300951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7ff80fc080366b1854d3aa2bad726d38dd85b95ee0cef88d2fcd4acfe07ca6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBE72300952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f5bdeb4684ec77f1aad1b96e5b92eb7b0795b5567b45f6639ec3acfb7f18c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEBE72300928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7efab8fe01311868e82a0b4f594393d009d6cc6b3e289517bd14e63186a9e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2465888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30a030600cd4671e2058fbb4fb875da7e4876a21168b3baefb37a517c25d62d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBE72400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265bd5ea51b7b6ced6731849f996d9c34905fcc9ba817f45bbb6e7ab5700a4af. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBE72400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6352acb74cf60ea7b71dfb03e34561c7672e5ed490ce6f8b612d58445bd16d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBE72400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44886fede84b334c17d33e4a206a781f820dd834cc8394229b659acdcf2776. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEBE72400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1122e09de22ec4b37cbb0e1f8087fbe08ed3926c6ae74bed2ea059ede29aa7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBE72400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f5bdeb4684ec77f1aad1b96e5b92eb7b0795b5567b45f6639ec3acfb7f18c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBE72300928.