Sidecoin is a mechanism that allows a snapshot to be taken of Bitcoin's blockchain. We compile a list of Bitcoin's unspent transaction outputs, then use these outputs and their corresponding balances to bootstrap a new blockchain. This allows the preservation of Bitcoin's economic state in the context of a new blockchain, which may provide new features and technical innovations.
@article{arxiv.1501.01039,
title = {Sidecoin: a snapshot mechanism for bootstrapping a blockchain},
author = {Joseph Krug and Jack Peterson},
journal= {arXiv preprint arXiv:1501.01039},
year = {2015}
}