Cadillac Motor Car Division, or simply Cadillac (), is the luxury vehicle division of the American automobile manufacturer General Motors (GM). Its major markets are the United States, Canada, and Chi
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 0xcbded74418df7094776df1e310ccd4aaf126be0ab0ac0cf0a423d7ea3be6fe23. 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/12ecaad3-e80b-4e41-b771-1423db705c8a.json and https://artists.proofprofile.net/proofs/artist/12ecaad3-e80b-4e41-b771-1423db705c8a.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 0xd1c5c37e561ddfda7a8c11e1857606c5e24a1fb956efe5900f775261de9c5620. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5702000647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3d4474ac788ea85c01858b4af2178f75808d9aa3158d5734a4079422d75eb5. 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/ES5702000676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2682453fbffcc0fc100781ea12d60efc1e5c3d148b2b8cf126fa9e4f1adcd77. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES5022100308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bf3ebdea3425b3ce16b5da2e7816d039103c9daf961abaecd1884b3fa8aed2. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:50:59Z), 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/ES5022100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0bfb33a1fe02996a3b14e82c7728ef80bbc4cd11f4bcc47658641d57f49f9d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/AUFF00500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15633b8bb9c36e9b26da57b79938c143287a6a5848aab181bcdcc040fad9999f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/AUFF00500325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4960de21c70183ca6193fe10e5600528261e77020844e0c3d185c25ddab896eb. 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/ES5702000669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2682453fbffcc0fc100781ea12d60efc1e5c3d148b2b8cf126fa9e4f1adcd77. 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/ES5022100308.