HREVN · Engineering opinion

Ideas that changed how we build verifiable evidence.

Essays about the properties a check actually establishes, the boundaries it leaves open and the records that people and AI agents can reasonably rely on.

When a check passes and proves the wrong thing: what COLDCARD changed in HREVN

A wallet-security incident prompted us to ask which property each HREVN verification result actually proves — and to strengthen integrity, signer authority and exact-issuance checks for business records.

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