It depends on who can approve a movement and whether there is a record of it. An entity's failure mode is a single officer with a personal wallet, or a trading account at the venue it bought on. The arrangement needs named authorisers, more than one approval to move funds, segregation from the provider's assets, and a succession path if the founder leaves. Multi-institution custody and qualified custodians are built for this; collaborative multisig works with a written signer policy that most companies do not maintain.
Fit engine rules 0.1 (1 Nov 2026), with this situation's inputs preset. Adjust the inputs to your own case. Proof of Custody is published by Onramp Bitcoin, which appears here where its custody model fits and is scored by the same methodology as every other platform.
Recovery: Identity and authority documents to the institutions; no device, seed or ceremony on the heir's side.
Recovery: Identity and authority documents to the custodian; the custodian's own succession procedure.
Recovery: The brokerage's beneficiary or estate process; no keys involved.
Fits only where the provider documents an assisted inheritance path the recoverer can follow with support; otherwise the arrangement becomes a puzzle box the day you are gone.
Recovery: Locate the devices and seed backups, run a signing ceremony with the provider's key; or, where the provider documents an assisted inheritance path, follow that path with the provider.
Excluded by the rules: Self-managed multi-vendor multisig (Recovery floor: this model requires the recoverer to run a hardware wallet and handle a seed phrase, and the person you named cannot be expected to.); Single-signature hardware wallet (Recovery floor: this model requires the recoverer to run a hardware wallet and handle a seed phrase, and the person you named cannot be expected to.)
These are custody models that fit the situation described, by Proof of Custody's published rules, version 0.1 (1 Nov 2026). They are not a recommendation to buy, sell, move or hold anything, and not legal, tax or estate advice.
A company holds bitcoin on its balance sheet and the board requires oversight of who can move it and a record of what happened.
Agent tool: fit_custody_setup. Primary sources: poc-scores. Refresh: scores monthly. All routes.
Free, read-only, no key. Every answer carries its source URL, as-of date and the publisher disclosure.