A pre-signed Bitcoin transaction can be valid, fully authorized, and still fail to propagate when it is finally needed because its fee was chosen for a market that no longer exists.
Package relay addresses the mismatch by letting a node evaluate a low-fee parent and a fee-paying child together. The parent remains a separate transaction with unchanged signatures and outputs. The child contributes the fee required by current conditions.
This is especially relevant for vaults, Lightning channels, inheritance plans, and any system that signs before broadcast.
The authorization can be fixed early. The confirmation priority can remain flexible.
Read: https://blog.bitvault.sv/package-relay-and-ephemeral-anchors-how-bitcoin-transactions-adapt-to-a-changing-fee-market/

Package relay addresses the mismatch by letting a node evaluate a low-fee parent and a fee-paying child together. The parent remains a separate transaction with unchanged signatures and outputs. The child contributes the fee required by current conditions.
This is especially relevant for vaults, Lightning channels, inheritance plans, and any system that signs before broadcast.
The authorization can be fixed early. The confirmation priority can remain flexible.
Read: https://blog.bitvault.sv/package-relay-and-ephemeral-anchors-how-bitcoin-transactions-adapt-to-a-changing-fee-market/
