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We currently do not de/serialize the txout nonce in the Coin class, meaning that after restarting the node, all nonces in the utxoset are cleared, resulting in a network where everyone has an (inconsequentially) different version of the UTXO set.

Currently the nonce is not used for anything consensus-critical, but it may be in the future --- for example, we might want input nonces covered by a future sighash version --- so this is a massive footgun.

I recommend going through and explicitly censoring the nonce stored in any CoinsView that represents the UTXO set.

I think we're going to just fix the serialization (after confirming that the rescan is not horribly long)

Addressed by https://github.com/ElementsProject/elements/pull/1008.