The blockchain a WalletPaymentInstrument settles on — a runtime
b2b.chain key (no longer a literal union, so new chains are creatable via
the admin /chains page). Reused by downstream domains (e.g. blockchain
withdrawals) instead of re-declaring the chain dimension.
The blockchain a WalletPaymentInstrument settles on — a runtime
b2b.chainkey (no longer a literal union, so new chains are creatable via the admin/chainspage). Reused by downstream domains (e.g. blockchain withdrawals) instead of re-declaring the chain dimension.