The XY primitive — cryptographic verification for any system.
Project description
xycore
The zero-dependency cryptographic protocol for proving state transitions.
X is state before. Y is state after. XY is proof the transition happened. Chain them. Anyone can verify.
Not a blockchain. Not a database. Not a logging framework. A standalone protocol — the cryptographic core, extracted, with nothing else attached.
Install
pip install xycore
Usage
from xycore import XYChain
chain = XYChain(name="my-chain") chain.append("deploy", x_state={"version": "1.0"}, y_state={"version": "1.1"} ) chain.append("configure", x_state={"version": "1.1"}, y_state={"version": "1.1", "configured": True} )
valid, break_index = chain.verify() assert valid
Properties
- Zero dependencies. Standard library only.
- Works offline. Works without an account. Works forever.
- Anyone can implement against this spec in any language.
- Anyone can verify a chain independently — no trust required.
Signatures (optional)
pip install xycore[signatures]
pruv
pruv is the verification layer built on xycore. https://pruv.dev
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