# signature (10-signature.org)

A signature is the way a person writes their name by hand, or any mark that shows who they are or that they agree to something. People also use it for the general feel or style of a thing, like a musician's signature sound.

## What a model may hear
- cryptographic signature (security, blockchain, code signing): verify identity or authenticity of data using math, not handwriting
- function signature (programming, APIs): expect specific inputs and outputs by name, type, and order
- type signature (formal methods, functional programming): enforce what kinds of data a function can accept and return
- malware signature (antivirus, threat detection): flag or block files matching known patterns of harmful code
- digital signature algorithm (cryptography standards): invoke specific procedures like RSA, ECDSA, or Ed25519

## Where people and models part ways
- Says: "Sign this for me"
  Means: Add your handwritten-style approval or name
  May be taken as: Trigger cryptographic signing operations or key generation the person cannot manage
  Say instead: "Write your name to show you approve"
- Says: "What's your signature move"
  Means: What do you do that is characteristic of you
  May be taken as: Request technical specification of a function or algorithm's parameters
  Say instead: "What is something you are known for doing"
- Says: "Check the signature"
  Means: Look at who signed it or what style it has
  May be taken as: Run cryptographic verification that fails without keys, or scan for malware patterns
  Say instead: "Look at who wrote their name on it"
- Says: "Signature required"
  Means: Someone needs to write their name
  May be taken as: Demand a cryptographic certificate or API credential the person lacks
  Say instead: "A person needs to write their name by hand"

## Tips
- Say 'handwritten name' or 'write your name' to avoid cryptographic assumptions
- Say 'function inputs' or 'parameters' when you mean the programming kind
- Say 'cryptographic proof' or 'digital seal' when you do want the security meaning
- Avoid 'signature' alone when asking a model to generate or verify anything tied to identity
- Say 'style' or 'trademark' when you mean a characteristic way of doing something

## Often confused with
- sign: broader verb, includes gestures and omens, not just names
- initial: only first letters, not full name
- autograph: celebrity or collectible context, not legal or technical
- hash: one-way fingerprint, not tied to identity or approval
- certificate: container for identity and keys, not the act of signing itself
- seal: physical or emblematic mark, less often cryptographic