Fedimint

Fedimint is an open source protocol for community custody of bitcoin, in which a federation of multiple guardians jointly holds bitcoin in a multisignature arrangement and issues Chaumian ecash tokens redeemable against it. Users transact with strong privacy inside the federation, while the guardians, typically 4 or more with a threshold needed to act, cannot see who holds which tokens.

Why it matters

Fedimint targets the uncomfortable middle of bitcoin custody. Full self custody demands technical skill and careful key management that many people, and much of the world, cannot yet practice safely, while exchange custody concentrates funds with a single company. A federation distributes that trust across several known community members, no one of whom can steal or censor alone, and blind signatures, the 1982 invention of David Chaum, give users payment privacy that on-chain bitcoin does not provide. Tokens move instantly and at negligible cost inside the mint, and gateways connect federations to the Lightning network for external payments. The model's honest limitation is that it is still custodial: a colluding threshold of guardians could take the funds, so its safety rests on social accountability rather than pure cryptography.

In the gold vs bitcoin debate

Fedimint recreates something gold history knows well, the community goldsmith holding deposits and issuing notes, but with the ledger replaced by cryptography and the goldsmith replaced by a quorum. Where paper gold claims historically drifted from the metal backing them, ecash tokens are redeemable pegs whose issuance the guardians cannot quietly inflate without eventual redemption failure exposing them.