Configurations from individuals to institutions: same multi-signature primitive, different signer sets. Includes a deep-dive on estate and inheritance planning further down.
Multi-sig removes the single-seed-phrase failure mode. Independent keys held by trusted people or hardware devices mean no one moment (a hack, a forgotten backup, coercion) puts everything at risk.
The wallet you'd hold your net worth in. Multi-sig backup means a lost phone doesn't lose the account.
Typical setup
2-of-3 vault: mobile · hardware wallet · sealed backup
Why Trustodian
Shared household savings that neither partner controls alone. Everyday spending needs both parties.
Typical setup
2-of-3 vault: partner A · partner B · attorney (dormant)
Why Trustodian
The cold vault you rarely open. Separated from your everyday spending wallet so day-to-day activity can't touch it.
Typical setup
3-of-5 vault with geographically-distributed signers
Why Trustodian
Pass digital assets on without exposing the seed phrase. Heirs and a professional co-signer become the quorum after you.
Typical setup
3-of-5 vault: you · spouse · child · attorney · trust company
Why Trustodian
Corporate crypto belongs behind the same governance layer as corporate cash. On-chain M-of-N replaces the “trust the finance manager not to run off with the wallet” model with a transparent, audit-ready policy.
Company holds stablecoins, BTC, or other assets on-balance-sheet. Every movement needs board-level authorization.
Typical setup
3-of-5 vault: CEO · CFO · COO · board members
Why Trustodian
Recurring payments to employees, contractors and suppliers, authorized through workflow, not a shared seed phrase.
Typical setup
2-of-4 vault with a whitelisted contractor address book
Why Trustodian
Move value between offices, subsidiaries, or partners in different jurisdictions without correspondent-bank delays.
Typical setup
Multi-chain vaults, one per corridor · shared signer set
Why Trustodian
Co-founder multi-sig for the seed round. Nobody walks off with the treasury on a bad day, and investors see governance.
Typical setup
2-of-3 vault: founder A · founder B · lead investor
Why Trustodian
Attorneys, trustees and court-appointed fiduciaries need custody that produces evidence (who authorized what, and when) and that survives the professional's own retirement, incapacitation or firm change.
Hold client funds during a transaction (real estate, M&A, litigation settlement) without a single-signer risk.
Typical setup
2-of-3 vault: attorney · client · firm partner
Why Trustodian
Living or testamentary trust holding crypto assets. Trustee co-signs with a beneficiary representative or licensed fiduciary.
Typical setup
2-of-3 vault: trustee · fiduciary service · beneficiary
Why Trustodian
Neutral escrow during marital dissolution or contested proceedings. Neither party can move funds alone.
Typical setup
2-of-3 vault: party A counsel · party B counsel · neutral third
Why Trustodian
Court-appointed custodian of debtor assets. Multi-sig ensures no unilateral action; every movement is on the record.
Typical setup
3-of-5 vault: trustee · court representative · creditors' counsel
Why Trustodian
Exchanges, fund managers, family offices and other regulated custodians need on-chain enforcement they can prove to auditors, not a black-box MPC vendor's word.
The vault that holds customer BTC / ETH / SOL between hot-wallet top-ups. Institutional-grade quorum, on-chain proof.
Typical setup
5-of-9 vault with geographically-distributed hardware signers
Why Trustodian
Crypto hedge fund or venture fund holding portfolio assets. LP-visible governance without exposing LP identities.
Typical setup
3-of-5 vault: GP · CIO · compliance · custodian · limited partner rep
Why Trustodian
Multi-generation family wealth custody. Family members and professional managers share governance across decades.
Typical setup
3-of-6 vault: patriarch · heirs · advisor · attorney · trust company
Why Trustodian
DAOs, protocols and Web3 collectives already vote on-chain. Their treasury custody should be verifiable in the same way: no off-chain MPC coordinator, no vendor able to intercept a transaction.
Community-governed treasury with core-contributor multi-sig. Executes votes with an on-chain quorum.
Typical setup
5-of-9 vault mirroring the multi-sig council structure
Why Trustodian
Protocol-owned liquidity, insurance funds, and grant reserves. Native to the chain the protocol lives on.
Typical setup
Native multisig on the protocol's home chain
Why Trustodian
Ecosystem grant treasury. Grants committee co-signs disbursements to approved recipients.
Typical setup
3-of-5 vault: grants committee · with an approved-address book
Why Trustodian
Registered charities, foundations, and software teams get the same custody primitives with governance shaped to their operating model.
Registered charity holds donated crypto. Board approves disbursements; regulators see the audit trail.
Typical setup
3-of-5 vault mirroring the foundation's board
Why Trustodian
An AI agent, service, or automation needs to make small payments, with strict limits, screening, and human override for anything unusual.
Typical setup
Personal wallet with x402 delegated key + Safe Allowance Module
Why Trustodian
Accept and settle payments in crypto via API. Programmatic access with the same governance the human dashboard uses.
Typical setup
Vault with an IP-whitelisted API key for automated flows
Why Trustodian
Real setups
The same M-of-N primitive, with the signers, chains and quorums each one uses.
Web3 · Base · Ethereum
Four core contributors, three community-elected members. The signer set rotates every quarter — the rotation itself is a multisig transaction.
“The community doesn't have to trust us; they can watch the quorum on-chain.”
Fiduciary · BTC · Cardano
Two trust attorneys, the grantor, their partner, and their sister. The estate keeps moving even if two signers disappear.
“The court doesn't care about our governance. It cares about the audit trail.”
Business · USDC on Base
Two co-founders, CFO, external general counsel, ops lead. Business-hours-only. Weekly payroll runs against the same vault.
Family Office · BTC · Ethereum
Second-generation principal, three family members, two external advisors, three hardware-only signers.
“We do private banking-grade custody. We just don't need a private bank to do it.”
Non-profit · USDC · XRP
Five-person board, treasurer, external auditor. Address book locked to two field-office wallets — no ad-hoc payments.
Deep dive
The multi-signature primitive is the foundation of every serious crypto-inheritance plan. Below are two sample vault configurations, one for a family and one for institutional wealth, and an honest look at what Trustodian handles today and where the gaps still are.
Family
During life: you + your partner sign day-to-day movements. After your death: your partner + the attorney unlock the estate. The attorney's key stays sealed with written instructions until it's needed.
You
Mobile signer
Spouse / partner
Mobile signer
Estate attorney
Hardware wallet, sealed with instructions
Family office / high-value estate
Multiple family members plus an estate attorney and a licensed trust company. Any three of the five can execute. Heirs alone can't collude below quorum, and the estate isn't hostage to any single professional retiring or firm closing.
You
Mobile signer
Spouse / partner
Mobile signer
Adult child / heir
Mobile signer
Estate attorney
Hardware wallet
Licensed trust company
Institutional signer
What Trustodian handles today
Honest gaps to plan around
One primitive, many configurations
Everything on this page is a variation on the same technical primitive: independent signer keys, on-chain quorum, comprehensive audit log. If your use case isn't listed but sounds like it belongs on the page, it probably works. Talk to us.