Standard library for writing smart contracts for the Concordium blockchain.
This repository consists of the core standard library for writing smart contracts for the Concordium blockchain in the Rust programming languages, as well as some sample smart contracts. The core libraries are concordium-std and its helper crate of procedural macros concordium-std-derive.
The procedural macros reduce the amount of boilerplate the user needs to write,
while the concordium-std library exposes a high-level API that smart contract
writers can use when writing contracts, alleviating them from the need to deal
with low-level details of how the interaction with the chain works.
Examples
The examples directory contains some smart contracts that are used to test the standard library.
Contracts are not meant for production, they are used to illustrate how to use the standard library and the tooling Concordium provides. There is no claim that the logic of the contract is reasonable, or safe.
Do not use these contracts as-is for anything other then experimenting.
The list of contracts is as follows
- two-step-transfer A contract that acts like an account (can send, store and accept GTU), but requires n > 1 ordained accounts to agree to the sending of GTU before it is accepted.
Submodules
The repository has
concordium-contracts-common
as a submodule, and testing and builds are set-up to use the submodule version.
When changes are made in concordium-contracts-common they should be propagated
to this repository.