Abel Ernesto Herrera (born May 9, 1955) is a former Argentine football left back. He holds the record for the most league appearances for Estudiantes de La Plata in the professional era with 467.La Na
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 0x8b43b8efbfe17c56c040b0c5c88ddefdbe9b2cb78e3d69856894afda96e1c934. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d2ea71d-0ec6-4db5-ac4d-4995297c50cc.json and https://artists.proofprofile.net/proofs/artist/4d2ea71d-0ec6-4db5-ac4d-4995297c50cc.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 0xf7d6c4dcf6f8b3e4cce70221b0e8a8cb6ff1e2470404ef0b03912ce16459e1a4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:33:54Z), 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/QT3FC2528441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aedf060acb8df8dd21a9bebee0444062421f154d3245ed21a5edc95f85bd427. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3FC2528442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af06a8eae59aef9a4c099c9302815076abc81bb7a2d2319129d6b3d6116b3c3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:36Z), 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/QT3FC2528443.