Sharecoin

A Bitcoin fork with a GPU-friendly proof-of-work and a public, verifiable randomness beacon derived from already-mined blocks. Try it live below, no signup, no wallet required.

GitHub Use cases Beacon spec

Live demos

Each one locks something in at a block height, waits for a future block to actually confirm, then uses that block's beacon value to settle the result. Anyone can redo the math by hand and get the same answer.

› Raffle
Lottery draw from a future block's beacon. Fits community giveaways where nobody should have to trust the organizer.
Demo
› Roulette
Simulated-credit spin using the same beacon mechanic, a pitch for how a real game could be built on this, not a real-money product.
Demo
› Random draw
Plain number draw pulled straight from the beacon, the simplest possible way to see a verifiable random value come out of a real block.
Demo
› Audit draw
Pick items from a pool for closer review, fits compliance spot-checks or customs/shipping inspection selection, nobody can steer who gets picked.
Demo
› Fair queue
Generates a full verifiable order for an entire list, not just a subset. Fits speaker order, review queues, or any "who goes first" decision.
Demo
› Sealed bid
Commit-then-reveal auction. Bids stay hidden as hashes until a future block confirms, then the highest revealed bid wins.
Demo

Command-line demos

Standalone Python scripts in the repo's demos/ folder, for committee selection, active-node rotation, and delayed-reveal commitments. Each one's real-world fit is written up in USECASES.md.

  • sharecoin-sortition-selector.py  draws a committee, without replacement, from a candidate pool.
  • sharecoin-oracle-selector.py  selects an active subset of nodes for the current confirmed block.
  • sharecoin-timelock-vault.py  commit-then-reveal, with the beacon as public proof the reveal happened on schedule.