Moving from PoC 1 to PoC 2

When the change over happens:

• All PoC-1 era nodes will stop. (New blocks will be available on the new libp2p network, and not on the devp2p network, and there's no nodes that exist on both.)
• If you're already synced using a vaguely recent master build or v0.1.69 or v0.2-devp2p, then you can easily upgrade once the changeover happens. You'll need to stop your node, upgrade the database (see below) and then start a new node build from either the v0.2 or master branches.
• If you want to get started right now, then you can also switch (or start a v0.2/master node) earlier, but your node will stall until the network switches runtime.

Upgrading the Database

There's a manual step in moving from an older build to a new master or v0.2 branch build because the database is stored in a new place. Essentially, you'll need to move the contents of whatever place your node uses to store the database &c. into a subpath chains/poc-1-testnet.

If you're using the defaults on Mac OS, then just run:

mkdir -p /tmp/chains/poc-1-testnet && \
mv ~/Library/Application\ Support/Polkadot/* /tmp/chains/poc-1-testnet && \
mv /tmp/chains ~/Library/Application\ Support/Polkadot/

If you have been using the -d MY_PATH CLI parameter before then you'll want to run:

mkdir -p /tmp/chains/poc-1-testnet && \
mv MY_PATH/* /tmp/chains/poc-1-testnet && \
mv /tmp/chains MY_PATH/