A minimal implementation of the EcdsaKoblitzSignature2016 JSON-LD signature, signing and verification. This is used by Blockcerts cert-verifier and cert-issuer for signing and verification.
Keep in mind that, in contrast to the jsonld-signatures javascript library implementation, this minimal implementation currently lacks additional checks that should be performed (issuer keys, dates, etc). Therefore this library should not be used as a standalone verifier in the current state. The Blockcerts project uses this library COMBINED with cert-verifier to ensure the additional checks are performed.
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