---
# System prepended metadata

title: 'Blockchain moderated by empty blocks to reduce the energetic impact of crypto-moneys,  Computer Communications, 2020'
tags: [election, Green, TSA, PoW, '***']

---

# Blockchain moderated by empty blocks to reduce the energetic impact of crypto-moneys,  Computer Communications, 2020

###### tags: `Green`, `PoW`, `election`, `TSA`, `***`

## Resume

Reducing the amount of simultaneously mining models can be done by controlling the mining time of a block in an other way than using CPU power race.
Implementation of the modified PoW : to submit a bloc it's hash has to be less than the call value of the precedent bloc. If it's not the nodes wait for a "empty bloc" to be created which contain a higher call value (and so on repeatedly). The "empty bloc" can be explicitly created by a central authority, or be implicitly made with a distributed time-stamping system (while the call values of empty blocs are deterministics).

## Commentary

Well explained and proved this article seems to be interessant while it use a system based on a well-known proof and provide improvements. This is not really clear for the moment about how the leader election is technicaly made (for me). 