HODL.voting is a time-lock-weighted voting system that gives provable long-term bitcoin HODLers a way to express their opinion on proposed protocol upgrades.

To vote, users are requested to lock-up bitcoins for some pre-determined amount of time (using CHECKSEQUENCEVERIFY), where each vote is weighted by the number of bitcoins * lock duration. This mechanism lets people who're willing to commit to long-term hodling (and thus have a provable vested interest in bitcoin) get more say.

I built this project for the TLV emBassy 2017 Hackathon (and won the first prize with it!). It is currently running on testnet. Happy to hear your thoughts :-)

Website: https://HODL.voting/

GitHub repo and more info: https://github.com/shesek/proof-of-hodl

Hackathon slides: https://www.docdroid.net/rzFKS1g/proof-of-hodl.pdf.html

Article by Kyle Torpey: https://cryptoinsider.com/new-bitcoin-project-aims-make-online-trolling-expensive/