Iker is a Basque male given name. The corresponding female name is Ikerne. It was created by the Spanish Basque writer Sabino Arana in his book (Collection of Basque Saints' Names)—an effort to provi
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 0xa3536e73b2fad62a48ea6929df653072638da6dd95661f1c7ddaaf7d4de962e4. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/331611d6-cb22-476e-af84-994be12017c8.json and https://artists.proofprofile.net/proofs/artist/331611d6-cb22-476e-af84-994be12017c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).