ubi2

UBI

A Universal Basic Income blockchain where humans are verified by AI and zero-knowledge cryptography, contracts are written in plain language, and money flows as a continuous stream — verifiable from any browser or phone.

UBI is an EVM-compatible chain built around six ideas:

1. AI proof-of-humanity — you become a verified, unique human through social vouching adjudicated by a quorum of AI verifier nodes (liveness grading + sybil analysis + dispute resolution). No biometrics, no documents.
2. ZK-passport proof-of-humanity — an optional, additive upgrade path: a zero-knowledge proof over an ICAO-9303 NFC e-passport (Groth16/BN254, adapted from the OpenPassport/Self circuit) produces a one-passport-one-human nullifier and opaque attribute commitments (age, nationality, expiry — no PII on-chain). Completing either path yields full Verified status and the same 1 UBI/hour stream.
3. Streaming UBI — every verified human accrues 1 UBI per hour, continuously. Streams extend account-to-account in real time, turning payments into flows.
4. Prompt contracts — smart contracts written in natural language and executed by a quorum of AI interpreter nodes that agree on the resulting effect, or abort. Intent-as-law, not code-as-law.
5. EVM-compatible JSON-RPC — standard wallets (MetaMask) add it as a custom network and read streaming balances, send txs, and sign contract/vouch/ZK-passport operations.
6. Browser and mobile light nodes — anyone can run a node in a browser tab or on their phone. The deterministic runtime compiles to WASM; a light client syncs blocks over a WebSocket gateway, re-executes every block, and checks the state_root byte-for-byte. A lying server is caught, not trusted. Phone + NFC + WASM = ZK-passport proof generated and submitted on-device.

Status: M1–M4 shipped (EVM RPC, streaming, AI PoH, prompt contracts). M5 Stage A (P2P networking) shipped. M6 ZK-passport PoH and the browser/mobile light node are Stage 1 shipped (crates zkpoh and runtime-wasm in tree; packages/light-client in tree). The in-browser PWA and the real NFC passport-scan flow are upcoming stages. See docs/roadmap.md.

Quickstart

Prerequisites: Rust (the toolchain auto-pins via rust-toolchain.toml), Node ≥ 20, pnpm. No API key is needed — the node defaults to a deterministic mock AI so the devnet always runs.

Terminal 1 — the chain:

pkill -f ubi2-node            # clear any stale node holding :8545
./scripts/devnet.sh          # builds + serves EVM JSON-RPC (HTTP+WS) on http://127.0.0.1:8545

Terminal 2 — the app:

pnpm install                 # once
pnpm --filter @ubi2/wallet dev   # → http://localhost:3000

MetaMask (optional): the app's "Add to MetaMask" button adds the network — name UBI devnet, RPC http://127.0.0.1:8545, Chain ID 21826, symbol UBI. Import the public devnet key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 to see a balance streaming at 1 UBI/hour and to sign transfers, vouches, and contracts.

Use a real AI (optional): open Settings in the app and point the node at a local model (Ollama — run ollama serve and pull a model) or a cloud key (Anthropic / OpenAI-compatible). Unconfigured, proof-of-humanity verdicts and contract interpretation use the deterministic mock.

CLI (ubi)

ubi is the one discoverable binary for running and operating the chain — it replaces the env-var sprawl and shell scripts. Every command has --help. The ubi node flags are ergonomic sugar over the UBI2_* env vars the node already reads: a flag overrides the matching env var; an unset flag leaves the env var as the documented fallback. Config resolution is unchanged, so the CLI adds no consensus risk.

Install

cargo install --path crates/cli    # installs `ubi` to ~/.cargo/bin (on your PATH)
ubi --help

multi re-invokes the ubi binary itself, so installing the CLI is all you need — no separate ubi2-node on your PATH. Or run it straight from the workspace without installing (note the -- before the CLI's own args, and that a bare ubi name won't be found until you cargo install):

cargo run -q -p ubi2-cli --bin ubi -- --help          # or, after `cargo build`: ./target/debug/ubi --help

ubi node — run a full node

ubi node --preset devnet          # plain single node (== ./scripts/devnet.sh)
ubi node --preset lightnode       # single node the browser light node accepts (pinned genesis + gateway)
ubi node --preset multi           # multi-node local network (== ./scripts/devnet-multi.sh)
ubi node --rpc 127.0.0.1:9000 --block-ms 1000     # bare (no preset), just flags/env

Presets:

• devnet — plain single node: RPC 127.0.0.1:8545, 2s blocks, wall-clock genesis, no proposer key, sync gateway off unless --sync-gateway is given. Identical to ./scripts/devnet.sh.
• lightnode — the single node the browser light node accepts: pinned genesis_time=1700000000, Anvil acct #2 as the PoA proposer, RPC 127.0.0.1:8545, sync gateway 127.0.0.1:8546, 1s blocks, isolated data dir .devnet-lightnode-data. Reproduces the pinned genesis anchor b24d054f… / state_root aa2c66cd….
• multi — one designated proposer (Anvil acct #1) + N-1 followers over libp2p, pinned genesis, full cross-bootstrap mesh (no mDNS — deterministic). The CLI launches the N processes itself and stops them all on Ctrl-C. Identical to ./scripts/devnet-multi.sh (which now delegates here).

ubi genesis anchor — print/verify the canonical genesis anchor

ubi genesis anchor --preset lightnode
# genesis_time : 1700000000
# genesis_hash : bc53563fa41f719abe0358f106b067e31915a6ed68d0656ba7443a36f01224e3
# state_root   : fa0360178cd29e57affe89478e19cbdc5bdc94fad00212695a4b241f2dcba1ac
# pin check    : OK (matches apps/light-node/src/config.ts PINNED_GENESIS_HASH/STATE_ROOT)

Recomputes the canonical devnet genesis from the SAME seeds the node applies (one shared function, no duplicated seed list) and — for the pinned lightnode genesis — asserts equality with the constants shipped in apps/light-node/src/config.ts, exiting non-zero on drift. Use it to regenerate or verify that pin.

ubi keys — the PUBLIC devnet accounts

Prints the standard Hardhat/Anvil test accounts the presets use (the dev account, the 3 jurors, and the PoA proposers), with addresses, private keys, and roles. These are public test keys published in every EVM dev toolkit — never use them for real value.

The app (one on-ramp)

• Wallet — your streaming balance (ticks live), transfers, and real-time streams to other accounts (each stream mints two soulbound NFTs you can view in MetaMask).
• Explorer — search any address / tx hash / block; drill into blocks (all header fields + decoded txs) and transactions (decoded hub call, logs, the resulting effect/verdict, fee).
• Identity — proof-of-humanity: your status, vouches in/out, vouch for / challenge others, the pending-cases queue, and the jurors. The ZK-passport upgrade path (NFC scan + on-device proof generation) lands in Stage 3 of the light-node track.
• Contracts — write a contract in plain language (or start from a template), deploy it, fund its escrow, and invoke it; watch the AI quorum commit or abort the effect.

Architecture

crates/runtime      Deterministic state: accounts, 1-UBI/hr emission, streams, the proof-of-humanity
                    lifecycle (social-vouching + AI-jury AND ZK-passport paths), prompt-contract
                    execution, and the shared AI-quorum tally. No floats in any consensus path;
                    balances are pure integer functions of (state, timestamp). Defines the
                    ZkPassportVerifier trait (no crypto deps in runtime itself).

crates/zkpoh        Pure, deterministic Groth16/BN254 SNARK verifier (Stage 1 shipped). Isolated
                    from runtime so the consensus core stays dependency-free. Implements the
                    ZkPassportVerifier trait with arkworks (ark-bn254 + ark-groth16, pinned);
                    compiles to WASM. Also holds the Pedersen attribute verifier, the MockZkVerifier
                    for CI, and a real-curve test-passport fixture path.

crates/runtime-wasm Thin wasm-bindgen wrapper over the untouched crates/runtime (Stage 1 shipped).
                    The only crate that may depend on wasm-bindgen. Exposes applyBlock / stateRoot /
                    balanceOf / serialize as a bytes/JSON API. Used by packages/light-client to run
                    the same deterministic kernel in a browser tab that full nodes run in Rust.

crates/rpc          EVM-compatible JSON-RPC (jsonrpsee, HTTP+WS) + the ubi_* read surface + the EXPL
                    indexer + the loopback-only oracle-admin RPC. Decodes the three system hubs.
                    Hosts the WebSocket sync gateway that serves blocks to light clients.

crates/oracle       The AI layer: HumanityOracle + ContractInterpreter, with a configurable backend
                    (Anthropic / Ollama / OpenAI-compatible) producing canonical structured outputs at
                    temperature 0, behind injection-fenced prompts. A deterministic MockOracle for tests.

crates/network      P2P networking (M5): libp2p transport, block gossip, the ubi2/sync/1 wire protocol.
                    The WireBlock format the light client re-executes is defined here.

crates/node         The devnet node binary: genesis, block production (2s tick), seeded jurors, wires
                    the real ZkPassportVerifier from crates/zkpoh.

packages/sdk        TypeScript client: EVM JSON-RPC + ubi_* readers + viem encoders for stream / vouch /
                    contract operations. No WASM dependency.

packages/light-client  TypeScript light-client (Stage 1 shipped): WebSocket sync driver, WASM glue for
                    crates/runtime-wasm, IndexedDB store, EIP-1193 signer, verifyMode control. Separate
                    from packages/sdk so non-light-node consumers do not pull the WASM artifact.

apps/wallet         The Next.js app (wallet + explorer + identity + contracts + settings).

docs/               WHITEPAPER, the roadmap, the dev loop, the task board, specs (+ ADRs), gate reports.

System hubs (reserved addresses; operations are EIP-155 txs to them, so MetaMask signs them):

Fees: every tx pays a small gas fee in UBI (gas_used × 1 gwei) to the treasury; onboarding (requestVerification) is fee-exempt. A tx whose op fails is mined with a status 0 receipt + reason (it never silently hangs).

The AI-quorum invariant: AI is non-deterministic, but consensus must be reproducible. So every AI verdict or contract effect in the consensus path is produced by an independent quorum running a pinned model at temperature 0 with a canonical structured output, and is committed only when a supermajority agree — otherwise it aborts deterministically.

The ZK-PoH invariant: ZK verification is pure deterministic cryptography — no AI in the verify path at all. Every honest node re-runs the Groth16 pairing check and gets the same boolean. A tampered or patched verifier produces a different state_root and is out-voted by the honest majority; the chain advances only on the value the honest nodes agree on. See docs/specs/00-overview.md.

The light-node trust model: the WASM light client re-executes every block and checks the state_root byte-for-byte before updating any balance. A gateway that serves a forged block is caught immediately; it cannot make the light node display a wrong balance. See docs/specs/07-browser-light-node.md.

Light-node quick check

The crates/runtime-wasm crate and packages/light-client are in tree. To verify the WASM kernel produces byte-identical state roots to the server follower (the AC-WB parity gate):

cargo test -p ubi2-runtime-wasm --test parity --no-default-features

The ZK-passport verifier (real Groth16 curve, test-passport fixture):

cargo test -p ubi2-zkpoh

How it's built — the agent loop

UBI is developed by a team of specialized Claude Code subagents running an explicit loop: product → spec → build → test → reliability → security → release, gated by a Definition-of-Done (QA + reliability + security must be green). See AGENTS.md, docs/loop.md, and the live board docs/board.md. To run or extend a node as an agent, see SKILL.md.

Verify

cargo test --workspace        # the full Rust suite
pnpm -r build                 # the SDK + wallet

License

MIT © Democracy Earth Foundation. Built on the vision in WHITEPAPER.md.