Changelog — Fairbuild

v0.5.0

May 3, 2026

Site

Composio-aligned redesign + blog launch

Marketing site rebranded to a hybrid dark/light system inspired by Composio's design language: Geist typography, electric-blue accent, dark canvas for engineering-facing surfaces, light mode for legal and long-form. Five blog posts shipped covering settlement mechanics, smart-contract design, Soroban choice, and test coverage. Trust + privacy + terms pages added; sitemap extended to 16 URLs. Pushed in commits 84f52d2..92675f9.

v0.4.1

May 2, 2026

Contract

Hardening: settle_service auth, init guard, dispute path

Three guard fixes in one release. settle_service requires factory authorization for credit-mode settlement (closes a third-party griefing vector). init rejects re-initialization (AlreadyInitialized). The dispute path rejects late QA responses (now > due_by → TooEarlyOrLate), zero-bps default-slash calls, and self-slash where caller equals the QA being slashed. 61/61 tests still pass. Source: contract repo commits 9dfcc32..e69e3c2.

v0.4.0

April 7, 2026

Contract

Service Fabric — per-service settlement layer

Adds a service-oriented layer on top of the lot-based contract. New ServiceStage enum (EVT/DVT/PVT/MP/Sustaining), ServiceRequest + ServiceOrder + CompletionAttestation types. New mutators: register_fairbuild_oracle, create_service_order, accept_service_order, submit_artifacts, attest_completion, settle_service, redeem_credits, cancel_service_order. Soulbound SVT contract introduced as separate crate. 18 new service-fabric tests added; total 52 passing.

v0.3.0

March 14, 2026

Contract

Governance timelock + dispute resolution

Pricing, ERS, roles, and contract upgrades now move through a governance timelock with a 1-hour minimum delay for proposals and a 30-day delay specifically for fee-rate changes. Dispute path: request_reinspect, qa_reinspect_respond, challenge_default_slash. Challenge cost set at 0.1% of lot value; max slash capped at 20% of QA stake.

v0.2.0

February 21, 2026

Contract

QA staking + slashing

QA role now stakes collateral via stake_qa; minimum stake configurable at init. Stake locks during open challenges; unstake requests gated by a 7-day delay (request_unstake_qa + execute_unstake_qa). Slashing splits 50/50 between challenger and OEM. Per-address challenge rate-limit added (max 5/hour) to prevent grief-spam.

v0.1.0

January 30, 2026

Contract

Initial escrow + lot lifecycle

First public release of the FairFoundry Fabric. Three-role design (OEM / Factory / QA), escrow management (deposit_escrow, withdraw_escrow), lot lifecycle (create_lot, qa_commit*, qa_update_counts, execute_payment), and the Open → InQA → Approved → Paid → Closed state machine. Compiled cleanly for wasm32-unknown-unknown; 30 baseline tests passing.

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Two contracts, ~3000 lines of Rust, 61 tests, CC BY-NC 4.0.

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