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OP_CHECKWILDCARDSIGVERIFY or "Wildcard Inputs" or "Coalescing Transactions"

OP_CHECKWILDCARDSIGVERIFY or "Wildcard Inputs" or "Coalescing Transactions"

Posted on: November 25, 2015 14:16 UTC

A proposal has been made to introduce a new opcode, OP_CHECKWILDCARDSIGVERIFY.

This opcode would allow for the consolidation of multiple UTXOs associated with a specific address into one larger UTXO. Consolidation is useful in scenarios where multiple small transactions are sent to the same address. It can be more expensive to spend many small UTXOs than one larger one. Some issues were raised with the proposal. These include encouraging address reuse and the possibility of double spending. However, potential solutions were suggested such as using the highest block height number of transactions or a signature that includes the date. The overall transaction type would essentially offer a time-limited opportunity to reduce the UTXO set of an address to benefit the network.The context provided appears to be a PGP signature, which is a type of digital signature used for secure communication. PGP signatures are typically used to verify the authenticity and integrity of messages sent over the internet. The signature is created using a private key that only the sender has access to. When the recipient receives the message, they can use the public key to decrypt the signature and verify that it matches the original message.In this case, it is unclear what message the signature is attached to or who the sender and recipient are. However, the signature itself appears to be valid and properly formatted. It may be possible to use the information contained in the signature to identify the sender and verify the authenticity of the message.