Changelog / Release Notes

Following the Keep a Changelog convention and Semantic Versioning 2.0.0.

Unreleased

Planned

  • Lift TVL cap to US $100 m after post-launch Sigma Prime diff audit.
  • Add Backed bIB01 (Polygon) wrapper and automatic bridging (Q1 2026).
  • EUR-denominated vault (EURC + tokenised Bunds) (Q2 2026).
  • Cross-chain deployments to Base and zkSync (Q3 2026).

[0.1.0]
2025-07-27

Added

  • AggregatorVault ERC-4626 smart-contract issuing yTBill, accruing a 30 bp streaming fee and a 1.5 bp exit fee.
  • StrategyRouter that routes new deposits to the highest-yield tokenised US-Treasury-Bill wrapper and performs daily rebalances respecting a 60% issuer cap and ≥ 5 bp net-yield threshold.
  • Guard contract that auto-pauses deposits when Proof-of-Reserve (PoR) feeds are stale (> 60m) or NAV divergence exceeds 0.3%.
  • Soul-bound KYC_PASS NFT gating deposits, minted once Sumsub KYC is approved.
  • Chainlink PoR oracle integration for TBILL and wSTBT.
  • Off-chain micro-services suite: Rebalance Cron (Rust), Oracle Watcher (Node.js) and Dashboard indexer (TheGraph).
  • AI multi-agent risk engine (YieldScout, RiskGuard, GasSaver, ComplianceBot) built with LangChain + Autogen.
  • 3-of-5 Safe multisig with 48h timelock for upgrades; emergency-withdraw path with 8h veto window.
  • Security hardening: OpenZeppelin & Sigma Prime audits, 75k USDC Immunefi bounty, Nexus Mutual TVL cover.
  • Public observability stack: Prometheus/Grafana dashboards, BigQuery event mirror, public Statuspage.

Known Issues & Limitations

  • Vault TVL is capped at US $25 m until the post-launch diff audit and insurance scale-up are complete.
  • Chainlink PoR feeds update ~15m; deposits auto-pause if feeds are stale > 60m, which may cause brief deposit downtime.
  • Gas snapshot assumes an Arbitrum base fee of 0.1 gwei; actual gas cost may vary under network congestion.

Upgrade Notes

  • All core contracts are behind a TransparentUpgradeableProxy controlled by the Safe multisig; upgrades require a 48h timelock and a published diff audit before execution.
  • Economic parameter changes (e.g. fee, issuer cap) follow a yTBill Snapshot vote (24h) before multisig enactment.