Custodial vs Federated Models
TL;DR
While full custody relies entirely on a single entity’s legal guarantees, federated models distribute trust among a consortium for increased privacy and resilience.
Full Custody
- The Model: Relying on a centralized bank, broker, or exchange (e.g., Binance, Coinbase) to hold your bitcoin.
- The Risk: You possess zero cryptographic security over the funds. Your “balance” is merely an entry in their internal database, backed only by legal guarantees.
- Counterparty Risk: Extremely high. Susceptible to internal fraud, hacking, bankruptcy, or regulatory seizures.
Federated Multisig (Liquid/E-cash)
- The Model: You deposit funds into a system managed by a consortium or federation. Examples include Liquid (a sidechain) or Chaumian e-cash mints (like Fedimint).
- The Mechanism: A specific quorum (e.g., 11 out of 15 federation members) must actively collude to confiscate or move the funds.
- The Trade-off: While you still trust third parties, the trust is distributed. These systems often provide drastically better privacy (like blinding signatures in e-cash) or faster inter-exchange settlement (like Liquid) than the base layer, but they are fundamentally not sovereign.