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Features · UTXO chains

Pick the outputs you spend

Coin control for UTXO assets — consolidation, fee strategy and separation, decided rather than defaulted

On a UTXO chain a balance is a collection of discrete unspent outputs, and which ones a transfer consumes decides what it costs and what it commingles. The UTXO transfer flow lets an operator select those inputs deliberately instead of deferring to automatic coin selection — inside the same MPC signing and the same approval rules as every other transfer.

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The problem

Automatic coin selection decides your fee and your commingling for you

Bitcoin fees scale with transaction size and every input adds size, so a transfer consuming fifty small outputs costs far more than one consuming two. Left to an algorithm, a fragmented balance taxes every later transfer, and a reviewer asking which outputs funded a payment gets an answer nobody chose.

  • Fees you can planEach input adds transaction size. Choosing the inputs is choosing the fee, and consolidating in a quiet fee window becomes a decision rather than an accident.
  • Dust that stops compoundingLarge balances fragment over time. Deliberate consolidation combines many small outputs into fewer large ones, before the fragmentation tax is charged.
  • Separation held on-chainOperational float kept apart from reserves, and earmarked outputs spent on purpose — maintained in the wallet rather than only in a spreadsheet.

How it works

Output-level construction, inside the governance

Operators work at the unspent-output level: selecting which outputs to spend, consolidating fragmented balances, and constructing the transaction deliberately. That control sits inside the platform's governance rather than beside it — coin control on its own is a power tool, coin control under governance is an institutional one.

  • ✓Select the inputs, or consolidate many outputs into fewer
  • ✓Signed by the same MPC committee — no single party, Vaultody included, can move funds alone
  • ✓The same approval chains and role-based policies as any other transfer
  • ✓Available from the dashboard and via the API
Specification

What coin control covers

Plus the chains where the question does not arise.

Asset modelUTXO-based assets — Bitcoin and other UTXO chains, Litecoin among them.
Input selectionChoose the unspent outputs a transfer consumes, instead of deferring to automatic coin selection.
ConsolidationCombine many small outputs into fewer large ones, in a fee window you choose.
SurfacesThe dashboard and the API — operators build UTXO transactions from either.
GovernanceMPC signing, approval chains and role-based policies apply unchanged.
EvidenceThe transfer carries the usual per-state audit record, so which outputs funded it is on the record.
Account-based chainsNot applicable — an account-based address holds a single balance, so there are no outputs to select.

Frequently asked questions

Get answers to commonly asked questions.

Which assets have coin control?

UTXO-based assets — Bitcoin and other UTXO chains, Litecoin among them. Account-based chains debit a single balance, so there is nothing to select.

Does selecting inputs step around our approval rules?

No. A UTXO transfer is signed by the same MPC committee and clears the same approval chains and role-based policies as any other transfer.

Can we do it from the API?

Yes — operators build UTXO transactions from the dashboard and via the API.

Share the Trust Guard the Keys

Which outputs you spend is a decision. Make it deliberately.

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