Bitcoin presently suffers from unconstrained UTXO set growth. It would
be possible to disincentivize this and incentivize consolidating UTXOs
by adding a block weight penalty for UTXO creation, and bonus for UTXO
destruction:
* For each block, calculate the net change in UTXOs. If all the
tra
This has already been discussed and proposed in various papers and
articles, typically to replace SHA-256d with something else. It
basically works, but there's a some tiny issues:
1) Who goes first?
If you first calculate the expensive PoW and then do a cheap SHA-256d
around it, anyone can ma
If only one hash is allowed per block, then those who wish to utilize
the hash will have to out-bid each other ("fee-bidding"). This hash can
then be used to create another chain ("merged-mining")
Merged mining at present only needs one hash for a merkle root, and
that's stored in the coinbase
