Debora Racing cars is a small French car builder, popular with private racing teams, based in Besançon, France. Teams generally use their chassis to take part in Le Mans style endurance racing such as
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b70ba7b65fa1bc8151ba0a376db10d1155632951faf62957c220f3f890e4d9a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ae44504-7b13-4d04-9025-dc9b68d30e20.json and https://artists.proofprofile.net/proofs/artist/6ae44504-7b13-4d04-9025-dc9b68d30e20.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156defb9eefa8dcc93206e6c8afe4fd8ba34eaefff353b88b6955dea8d7b729f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARG991017032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb5799b7b7bb9a6f8aa78c2d0a427f5be95895a9d671d4283c0a7e135813ac. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARG991017033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb6a8f4cdca44c55a487cf46bce9a3bea82d8fdd5e64e16ae283397761789f8. 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/ARG991017034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e36b57dd93a0a78c67d8d834a3370b6a1fad6c18f00133e50225a61d7a4420. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/ARG991017036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ddb836400bfdc8f799fc51e973b5ec79278c7755f76bc5097c921e8b78b223. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ARG991017037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc444295d4bc07e2d99eb92c8140b3d935324b61e2ef0c23fb2883d61f362d5b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ARG991017038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb786f63284c8870717824e5fea7ef2c348710d74a227d4edf666578856f123. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM6DC1908767.
Medley: O'sarracino/ Tammuriata nera/ Luna rossa/ Torero/ 'A tazza 'e cafe'/ 'A citta' 'e pulecenella/ Maruzzella/ 'O surdato 'nnammurato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4185e3b307d25cc20da6d7078de8c35ce61b1b47d2c8f344e184a2233698b21. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARG991030264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da46e44b689109c140971f877c817b7a124de4d765b29423ad16052e80d9291. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ARG991047501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d46da75d226418a0983e9a214c8e502aa6e3e97233f050340b48f465cdfb4bf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARG991019365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589f63dccdfd5c2e8935ef354159ab4bad1d9404fcca389e244591757ef0170. 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/ARG991039794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80800e9e1ffd38eaf1f127972f87fe97a659c40e9ef6d10bbb77b93c12963b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991043012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80800e9e1ffd38eaf1f127972f87fe97a659c40e9ef6d10bbb77b93c12963b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARG991043012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdee3c4f163fc94597b41f9720984e1e6ee27607e99be73b1ba2545d9da7491. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ITF030600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee788afc54ed94c11746d0a855f4bb5177322a16d08033f1a0bdd0637eeaba24. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITF030600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436630374db65a82dd1e88890c6aca23e584e8600bfab48ebf9367aaca239ae0. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USA371024331.