Open schema and verifier for the Agent Witness Protocol (AWP) — tamper-evident, customer-keyed, offline-verifiable witness records. Verify a receipt without trusting, or asking, the producer.

Pre-built Noir (UltraHonk) circuits + witness builders for zkTable modules

Model Context Protocol server for OverlayRiskWitness — run the free independent before/after accessibility-overlay witness (accessiBe / UserWay) on any public URL.

Local-first coordination and read-only witness awareness for coding agents

Now witness the power of this FULLY ARMED AND OPERATIONAL DATASTAR!

Circom witness helpers and Groth16 proving (snarkjs) for PSR

Eyes & ears of agent-supported film production — witness a belt-device recording as typed perceptual events and seed a production knowledge graph

Witness (n) 3. One who hears; a listener.

Typescript SDK for Witness

Opt-in Bitcoin/OpenTimestamps substrateVerify for UST anchors — cross-checks a genesis/hour root against a REAL Bitcoin block header + >=6 confirmations. #68 witness / #69 A2 / #71 explorer-corroborated (2-of-N).

MCP memory / second brain for Claude Code & OpenCode — captures your coding sessions and distills how your knowledge and habits evolve over time, queryable by your agent.

A self-hostable witness for an AxioRank audit transparency log. Countersigns each sealed signed tree head with an Ed25519 key you control, so your records are an independent split-view defense. Zero runtime dependencies.

Primary SDK for using XYO Protocol 2.0

Local-first visual regression testing: CLI, diff engine, baselines and self-contained HTML report. No account, nothing uploaded.

SWT3 AI Witness SDK: cryptographic attestation for AI inference. 107 procedures, 56 namespaces, 8 languages, 18 profiles. EU AI Act, NIST AI RMF, CMMC, SR 11-7.

ZK-SNARK proof generator for Orbinum. Combines snarkjs (witness) with arkworks WASM (proof generation) to produce 128-byte Groth16 proofs.

The `acvm_js` package enables users to execute an ACIR program, i.e. generating an initial witness from a set of inputs and calculating a partial witness. This partial witness can then be used to create a proof of execution using an ACVM backend.

The Node.js SDK for the Witness Application.

Witness sealing substrate for ACP. Real HTTP client (customer-managed custody: prepare→sign→submit) + a no-network fake for tests/demo. Seals hitl_decision / agent_action to witness.getvda.ai.

Primary SDK for using XYO Protocol 2.0