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chain locked tx
Add a chain ID to the signature. This ensures that a transaction without TaPoS cannot migrate between Graphene-based chains, and reduces the ability for the transaction to migrate to a different protocol (e.g. if your Graphene key is also a Bitcoin key, then a Graphene transaction which is parseable as a Bitcoin transaction might be able to migrate to the Bitcoin chain).
The cli_wallet stores the chain_id in the wallet file. Thus a
wallet file can only be used with a single chain. When creating a
new wallet file, the chain_id can be specified on the command line;
if none is specified, the embedded chain_id will be used by default.
When connecting to an API server, the cli_wallet will check the
chain ID provided by the server matches the client, and disconnect
immediately if the check fails.
At present, the light wallet simply uses the chain ID specified by its backing full node to sign transactions.