One coin. Many chains.
Resources
merge-mining mainchain ↕ sidechain
Bitcoin mainchain Drivechain sidechain
BIP 300
Hashrate Escrow
A new rule lets Bitcoin hold funds in escrow for a sidechain and release them only after a slow, miner-voted withdrawal — no federation, no custodians. Miners are the referees.
BIP 301
Blind Merge Mining
Bitcoin miners commit to sidechain blocks they never have to validate, collecting the sidechain's fees. One proof-of-work secures many chains — the idea the channel is named for.
The peg
Two-Way Peg
BTC moves onto a sidechain and back without a new asset. Deposits are instant; withdrawals are deliberately slow and public, so the mainchain can always audit the exit.