v0.8.0 — Production Ready

What's New since v0.7.0

• Live demo poll on landing page — fetches active polls inline, click to vote
• Wallet-Native Auth callout — MetaMask integration surfaced in the "Why ZK Voting?" section
• Deploy to Your Chain section — Foundry bundle download with 3-command workflow on the landing page
• Poll test coverage — 18 new tests covering poll creation, voting (duplicate nullifiers, closed/expired polls), and sealed-results enforcement
• CI pipeline upgraded — go vet + race detector + JS parity checks, all green
• README rewritten — leads with ZK voting, full poll API docs, sealed results explanation, voting .btw DSL example

CI

Job	Status
lint	go vet
build	make build
test	go test -race (18 poll tests + existing suite)
js-parity	MiMC + Merkle parity + JS syntax

v0.7.0 — ZK Voting

What's New

• Landing page reoriented around ZK voting — hero, how-it-works, and feature sections now lead with anonymous on-chain voting
• API quick-start section — curl examples for poll creation, vote casting, and results
• Sealed results — tallies, nullifiers, and commitments are hidden while a poll is active to prevent vote-timing correlation attacks; full results exposed only after the poll closes

Commits

• Reorient landing page around ZK voting
• Tighten hero, add API quick-start section
• Seal poll results while voting is open

v0.6.3: ZK Polls

bitwrap v0.6.3

Anonymous voting with zero-knowledge proofs. Create polls, cast secret ballots, verify results — all from a Petri net model.

ZK Poll System

• Vote template — visual Petri net model for voting state machines (voterRegistry, nullifiers, tallies, pollConfig)
• VoteCast circuit — Groth16 proof of voter eligibility and valid choice without revealing identity or choice
• Secret ballots — vote choice hidden behind blinded commitment mimcHash(voterSecret, choice), can't be brute-forced
• Circuit-enforced bounds — maxChoices public input rejects out-of-range choices at the proof level
• 5 public inputs: pollId, voterRegistryRoot, nullifier, voteCommitment, maxChoices

Poll Lifecycle

• Create — wallet signature required (EIP-191 personal_sign), rate limited (5/hr per IP + wallet)
• Vote — ZK proof generated client-side, server re-verifies via gnark, tally updated in real-time
• Close — only the creator's wallet can close
• Results — event-sourced through the Petri net runtime: State(t) = fold(apply, initialState, events[0..t])

Privacy Model

Data	Visibility
Voter identity	Hidden (nullifier unlinkable to registry leaf)
Vote choice	Hidden (blinded commitment, never persisted per-vote)
Voter secret	Hidden (never leaves browser)
Vote count	Public
Per-choice tallies	Public (derived from event log)

On-Chain Governance

• IVerifier interface with Groth16 proof verification in castVote
• Contract stores voteCommitments[nullifier], not plaintext choices
• Foundry bundle: contract + verifier + tests + deploy script (8/8 tests pass)
• Constructor: (voterRegistryRoot, maxChoices, verifier)

Poll UI

• bitwrap.io/poll — create, vote, close, view results
• bitwrap.io/poll#deploy — download Foundry bundle or Solidity contract
• MetaMask integration for poll creation and wallet-derived voter secrets

API Endpoints

Method	Path	Purpose
POST	/api/polls	Create poll (wallet sig required)
GET	/api/polls/{id}	Get poll config + state
POST	/api/polls/{id}/vote	Submit ZK-proven vote
POST	/api/polls/{id}/close	Close poll (creator only)
POST	/api/polls/{id}/reveal	Reveal vote (fallback)
GET	/api/polls/{id}/results	Tallies from event log
GET	/api/polls/{id}/nullifiers	Public audit log

Size Limits

• Title: 200 chars, Description: 2000 chars
• Choices: 2–256 (matches circuit's 8-bit range proof)
• Voter commitments: 10,000 max
• Duration: up to 90 days

v0.2.0

bitwrap v0.2.0

Client-side ZK proving, EVM deployment, and full Go/JS parity.

New: WASM Prover

• Groth16 proving runs entirely in the browser via WASM
• Load pre-compiled keys from server or compile circuits offline
• Build with make wasm (~4.6MB gzipped)

New: Key Persistence

• -key-dir ./keys persists circuit keys across restarts
• First startup compiles circuits + saves keys; subsequent starts load instantly
• GET /api/vk/{circuit} — export verifying key
• GET /api/vk/{circuit}/solidity — export Solidity verifier contract

New: EVM Deployment

• GET /api/bundle/{template} — download complete Foundry project (contract + verifier + tests + deploy script)
• Remix plugin now deploys both contract and ZK verifier to workspace
• Added "Foundry Bundle" download button to Remix plugin

New: Full Go/JS Parity

• mimc.js — MiMC-BN254 hash (verified against Go)
• merkle.js — fixed-depth binary Merkle tree
• witness-builder.js — witness builders for all 6 circuits
• safemath.js — U256 overflow-checked arithmetic
• model.js — Petri net model with validation
• state.js — state machine execution (fire, enabled, canReach)
• bridge.js — Schema <-> Model conversion

Breaking Changes

• arc/ moved from internal/arc/ — now importable as github.com/stackdump/bitwrap-io/arc
• public/ moved to repo root — CDN path is now @latest/public/
• internal/static/ removed
• NewArcnetService() now takes a keyDir string parameter

v0.1.0

bitwrap v0.1.0

First release — Petri nets as ZK containers.

Features

• Visual Petri net editor with JSON-LD save/load
• 6 Groth16 ZK circuits: transfer, mint, burn, approve, transferFrom, vestClaim
• MiMC-BN254 Merkle state trees (Go + JS parity)
• Client-side witness builder for all circuits
• Solidity contract generation from ERC templates (020, 0721, 01155, 04626, 05725)
• .btw DSL compiler
• CID-based content-addressed model storage
• SVG rendering of Petri net models