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Issued and signed by Codexa Technology Ltd on 13 October 2026 at 05:49 UTC.

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Communiqué · CDX-2026-000001-CA2H

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Document date: 13 October 2026

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Signature details

Status: Authentic
Entity: Codexa Technology Ltd
Reference: CDX-2026-000001-CA2H
Issued: 13 Oct 2026, 09:49
Algorithm: Ed25519 / SHA-256
Key ID: 7E6A855D554C270E
Content SHA-256: 8b7c8c18ffaea4102cb24dcffdd73eab2efb65548fdb3b93b767d088b8729df9
PDF SHA-256: 7d7ed91a0a3369e28705ea39a892bf797ce3e5c7f01c8b473b04350c916e5518
Signature: xdEhkQbI1MeVJMcolTTl0HPvfyihOiL7j+05PkpktK2Nch8dAh37S1shVpOw0cmoiojvMvzji1pjK7K8Dp4RDg==
Chain: #1 (first document of this entity)

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Download proof.json and the public key, then:

jq -r .canonical_json proof.json | tr -d '\n' > c.json
sha256sum c.json   # must equal content_sha256
jq -r .signature_base64 proof.json | base64 -d > sig.bin
openssl pkeyutl -verify -pubin -inkey codexa-7E6A855D554C270E.pem \
  -rawin -in c.json -sigfile sig.bin

Public key (raw, base64): zV5Vp/Zbh5xe/Up/00ZtpZnPks/wL+vgvJnN6Y2o+cs=