nxTBILLUS Treasury Bill
Live
Stale
Last update
Feed decimals
CB status
Snapshot age
Feed address
Full timestamp
Chainlink-powered
NAV Oracle
Live net asset value reads from the protocol's NAV oracle. Per-asset Chainlink feeds with staleness guards, dust rejection, and an autonomous 15% circuit breaker.
Oracle
NetworkBase Mainnet
Feed typeChainlink AggregatorV3
Max staleness1 hour
CB threshold−15% / 24h
Guardian
Live NAV feeds
Reads from chainCircuit breaker
Circuit breaker — 15% threshold
The oracle stores a 24-hour price snapshot. On every NAV read, if the current price has fallen more than 15% from that snapshot within the same window, the circuit breaker trips automatically. Reads revert with CircuitBreakerTripped until the guardian resets it.
NAV price over time
−15% drop triggers breaker
Validation pipeline
Validation pipeline
Every call to getLatestNAV() runs these checks in order. One failure reverts the entire read.
1
Round validityroundId > 0 and startedAt > 0. Rejects unitialized or corrupted rounds from the aggregator.
2
Round completenessansweredInRound >= roundId. Prevents consuming a round that is still being answered by Chainlink nodes.
3
Staleness guardblock.timestamp − updatedAt ≤ 1 hour (MAX_STALENESS). Reverts with StalePriceFeed on stale data.
4
Negative priceprice > 0. Chainlink can return negative or zero on misconfigured feeds — this gate rejects them.
5
Dust priceprice ≥ 100 (MIN_VALID_PRICE). Prevents near-zero dust prices from passing as valid NAV.
6
Circuit breakerIf current price drops > 15% from the 24h snapshot within the NAV_DROP_WINDOW, the breaker trips and halts all reads until the guardian resets it manually.
Contract addresses
Asset Registry0x88bb8025dc10Cc642d2F0D10F4335EcDBdC9A594