# Services from notar.185-190-142-134.sslip.io on Zero

> notar.185-190-142-134.sslip.io serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/notar.185-190-142-134.sslip.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/notar.185-190-142-134.sslip.io/health.json

## Services

- [Hermes Notar — Bitcoin-anchored SHA-256 Timestamping](https://www.zero.xyz/c/hermes-notar-bitcoin-anchored-sha-256-timestamping-5474c339/llms.txt): $0.005/call via x402. Accepts a SHA-256 hash, returns a Nostr-signed receipt and an OpenTimestamps proof anchored to the Bitcoin blockchain as tamper-evident evidence of existence at a point in time.
- [Hermes Notar](https://www.zero.xyz/c/hermes-notar-7d7078d9/llms.txt): $0.02/call via x402. Timestamps a SHA-256 digest with a Nostr-signed receipt and a Bitcoin-anchored OpenTimestamps proof for verifiable provenance
- [Hermes Notar – SHA-256 Digest Timestamping & Notarization](https://www.zero.xyz/c/hermes-notar-sha-256-digest-timestamping-notarization-540d6169/llms.txt): $0.001/call via x402. Submit a SHA-256 hash of any content to receive a Nostr-signed receipt and a Bitcoin-anchored OpenTimestamps proof of existence at a specific moment in time.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)