Mariano Rojas (12 June 1973 – 23 June 1996) was a Spanish professional racing cyclist. He rode in the 1995 Tour de France. His brother is José Joaquín Rojas. References External links Category:19
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 0x71b14e39596b684ff89c3092424ef1d51c5c228b05c0dda0100069427966239c. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70dcef8e-afb7-4486-8531-62a859931e47.json and https://artists.proofprofile.net/proofs/artist/70dcef8e-afb7-4486-8531-62a859931e47.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 0x6400dbbb56e0a30d0635fb0f70660ca453aca4a45690345a34c0c71dab88954b. 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/QZNJW2355090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70dc845d7e9141d5e54901c5f0fdcd539e25f5a79a2784a035ef6a82b498f0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJW2355092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7e0faf20a021c51a120a489c0473b966cc37307c71b3ab12908442f036cd3. 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/QZNJW2354631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dcae6a505b62f6fa0e7a2413d0e889d28b0dd046745a15e9275755746f6b40. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZW9K2395110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a0d6bd54a21e050dcb6bed9428d1e40c464ed5e19d3eecdd8adfe1f780b7f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9K2394927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ecf19e3ba30d7e59252492c70ba5c9a72a0511863dc88852d4e6c77df0a4c7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:33:49Z), 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/QZW9K2395069.