Sandra Itzel (born 31 December 1993) is a Mexican actress and singer, best known for her role of Mayrita in the Univision telenovela Gata salvaje (2002–2003). She is currently part of the Colombian ba
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 0x48573f944eba41b0c6cb893d0e7ec2059297ac883c5b3c9996612f0b4a596b1f. 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/afa374e9-cecd-4411-978e-732d6be31f6c.json and https://artists.proofprofile.net/proofs/artist/afa374e9-cecd-4411-978e-732d6be31f6c.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 0xa64b9f912aa687dc317ba2f92727a57a087b2b2cd0a0134353180678c16fb03a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:19Z), 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/FR10S2399748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b836ec5c3d679a5e798949bac608cefe7d3dc99d888623048f2428d2cb90a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:22Z), 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/QMEU32400658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9f23ea718adc98470e72397c39dc88bf47a486cee9080a74cede6a8a130f93. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QMEU32403859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e075b6ff842fc3c6540c3348b6d5bd1b99f754cfb5e94f29a7e8f1720fef7b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/MXA5M2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf2fe5b2d5c76f31f1b71ed5f5c59742d27b9c4cd4cfb1b44bd47745497cfa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62444588.