BRC-20

Source bitcoinuniverseio/core (private)

Path backend/packages/ecosystem-contracts/lib/protocols.js

Chain bitcoin

Network mainnet

Lifecycle enabled

Verified 2026-09-01

AvailabilityEnabledSwitched on in the shipped build. The actions marked supported below are the ones Core can execute.

ChainbitcoinOwnership model: hybrid. Decimals: asset-defined.

Actions supported8 / 13Trading actions are declared supported for this protocol.

Feature gateNoneNo gate stands between the shipped build and the actions below.

Execution model

An external marketplace or provider owns the order book and the execution path; Core routes to it.

Registry values

Execution mode

external-execution

Owning surface

main

Availability

enabled

Feature gate

null

Aliases accepted

brc-20

Address roles

paymentordinals

Actions

Action	Supported	Mode, or the reason it is not
View	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
View collection	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
View activity	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
List	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
Update listing	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
Delist	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
Buy	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
Make offer	No	BRC-20 has no executable offer workflow on this marketplace surface.
Accept offer	No	BRC-20 has no executable offer workflow on this marketplace surface.
Cancel offer	No	BRC-20 has no executable offer workflow on this marketplace surface.
Sell	No	BRC-20 has no executable offer workflow on this marketplace surface.
Settle	Yes	An external marketplace or provider owns the order book and the execution path; Core routes to it.
Reconcile	No	BRC-20 has no executable reconcile authority on this marketplace surface.

Why the rest are unavailable

• Make offerAccept offerCancel offerSell

  BRC-20 has no executable offer workflow on this marketplace surface.

• Reconcile

  BRC-20 has no executable reconcile authority on this marketplace surface.

Source of truth

Question	What answers it
Which orders exist	UniSat Marketplace Open API
Who owns the asset	UniSat order creation/confirmation workflow
Whether a trade settled	UniSat order confirmation workflow plus wallet-signed PSBT
What the protocol state is	UniSat Open API

Indexer

Primary index

UniSat Open API

Fallbacks

None. If the primary index cannot be read, this protocol has nothing to fall back to and the page says the read failed.

What a mutation must prove

Provider-owned; Universe does not compare UniSat and local Bitcoin/indexer tips.

Freshness, confirmation, and reorg policy

Policy	Value	What the registry states
Freshness enforced	No	Order freshness and inventory reconciliation are delegated to UniSat.
Maximum index lag	not set	No numeric block-lag ceiling is configured for this protocol.
Maximum observation age	not set	No maximum age is configured for an observation used by a mutation.
Listing confirmations	not set	Confirmation policy is delegated to UniSat; Universe records pending receipts for retries.
Settlement confirmations	not set	No settlement depth applies, because no supported action reaches settlement.
Automatic reorg reconciliation	No	Universe has no local UniSat order rollback state.

Where else this protocol appears

The Bitcoin Universe registry records actions per product surface. Core is the main surface. The others are named here because a reader who cannot do something in Core may be able to do it in a sibling product.

Surface	Actions recorded
Coremain	viewdiscoverview-collectionview-activityview-transactionlistupdate-listingunlistbuysettle
Walletwallet	viewsendreceive
Inscribeinscribe	deployminttransfer

Read this alongside

• The support matrix, for how BRC-20 compares with the other 28 marketplace protocols.
• How to read a protocol row, for what each value on this page means.
• Market safety, before acting on anything here.