# KHOTEM

> Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文： AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.

- **Domain**: `khotem.com`
- **Provider**: KHOTEM (https://khotem.com)
- **Kind**: paid_api
- **Category**: verification
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 86%
- **Payment protocol**: x402 · network `eip155:8453` · ≥ $0.005
- **Wallet**: `0xe61c2359f1539b15f092aadbac332cf033767aec`

## Skills
- **Verify session integrity** — Integrity check of sealed sessions (merkle+CID). Body: session object(s) with seal.root. Returns verdict ALL VERIFIED / TAMPERED with reason.
- **Audit thread with verdict** — Batch audit of an array of sessions with per-item results and overall verdict.
- **Witnessed stamp of hash/content** — Witnessed stamp + timestamp. Body: {"content": "..."} (hashed and forgotten) or {"hash": "<sha256 hex>"} — content never leaves your machine. Returns seal_stamp
- **Certificate of existence** — Existence certificate. Body: {"ref": "0x<txHash>" | "<sha256 hex>" | "<16-hex stamp>"} — exact match against the ledger. CONFIRMED + entry, or honest NOT_FOUND.
- **Sealed operating-law documents (Russian)** — GET /api/doc/15 | /api/doc/16 | /api/doc/17 — sealed documents with sha16.
- **Full sealed document thread (Russian)** — GET /api/thread — the full sealed thread of documents with per-file sha16.
- **Quantum circuit simulation (exact statevector)** — POST /api/qsim {qubits:1-12, gates:[H,X,Y,Z,S,T,RX,RY,RZ,CNOT,CZ], shots<=1024} — exact amplitudes of any quantum circuit, computed classically with mathematica
- **Sealed compressed container (KUAR)** — POST /api/archive {files: {name: "text"|{"b64":"..."}}, password?} — proprietary lossless compression into a sealed KUAR container: per-file integrity manifest,
- **Reproducibility seal (ORACLE)** — POST /api/oracle {url, runs?:3..10, pick?} — N sequential probes of an https endpoint; verdict REPRODUCIBLE only if all N responses match byte-exact, honest UNS
- **Certified state-tuning session (TUNE)** — POST /api/tune {state:number[22], target?:number[22], steps?:1..8} — controlled evolution of a 22-dimensional state under a quality functional; returns tuned ve
- **On-chain token price oracle** — GET /api/price?ids=ethereum,usdc — live prices from Chainlink feeds on Base (the same chain that settles your payment). Cached 60s. Zero API keys, zero upstream
- **Live settlement-cost route** — GET /api/gas/route — live settlement-cost ranking across Base, Polygon, Linea, zkSync Era, Scroll and Solana: cheapest rail, estimated USD per settle, savings v
- **Booth ride for x402 sellers** — POST /api/booth {url} — KHOTEM pays a quoted x402 seller for you from refund-armed Base/Polygon custody. Total is always quoted first: seller price + $0.05 toll
- **Prepaid instant channel** — POST /api/channel/open/lite ($0.25) or /api/channel/open ($1.00): one x402 deposit opens a channel — then call ANY paid route with header X-CHANNEL: <id>:<key>.
- **Multi-chain wallet dossier** — POST /api/wallet-dossier {"address":"0x…"} — USDC/native balances + tx counts across Base, Polygon, Linea, zkSync, Scroll, ERC-8004 identity signal, KHOTEM paym
- **Codec arena (sealed benchmark)** — POST /api/pack/bench {"text":"..."} — KUAR vs gzip-9 vs brotli-11 on your payload: bytes/ratio/ms + round-trip 1:1 proof, sealed ranking.
- **Ops inside compressed container** — POST /api/pack/ops {"kuar_b64":"...","op":"grep","pattern":"..."} — stats/list/verify/grep/get INSIDE a compressed KUAR container without unpacking to disk; per
- **Agent verifier (anti agent-washing)** — POST /api/agent-verify {"repo":"owner/name"} — is it a real agent or a renamed chatbot: 6 agent-washing signals + tests + CI + secret-leak scan over the public 
- **Packet batch — up to 10 rooms, one payment** — POST /api/packet {"ops":[{"route":"/api/spa","body":{...}}, ...up to 10]} — pack up to 10 paid rooms into ONE request and ONE payment: total = sum of solo price
- **Trial seal (content <=1KB, real stamp)** — Real seal stamp for $0.01 — the cheapest entry. First EVM deal −50%; Solana rides list price.
- **Trial verification of trial/free-tier seals** — Verify a trial or legacy free_trial seal by ref for $0.01.
- **Live weather oracle (НЕБО)** — GET /api/weather?city=Berlin or ?lat=&lon= — temperature, humidity, precipitation, wind, WMO code, UTC timestamp; sealed snapshot; Open-Meteo, zero-key.
- **Academic search oracle (ЗВЕЗДА)** — GET /api/scholar?q=&limit= — OpenAlex 250M+ works: title, year, DOI, citations, open-access flag, authors + total hit count; sealed snapshot.
- **Pre-flight URL status guard (СТРАЖ)** — POST /api/urlstatus {urls:[≤5]} — ALIVE/DOWN/UNREACHABLE verdict, HTTP status, latency, redirect info per URL; SSRF-guarded. Check any seller or dependency BEFO
- **Surgical page extraction (СКАЛЬПЕЛЬ)** — POST /api/selector {url, pick:{name:"css-selector"}} — exact text per selector (≤20 picks, ≤5 matches), page sha256, sealed; SSRF-guarded, redirect re-checked p
- **Sealed pool tick batch (СТАЯ)** — GET /api/pool/tick?chain=base&n=<epoch_minute> — sealed per-minute block-processing batch from the swarm over Base/Linea/zkSync/Scroll + Bitcoin witness. Free v

## URLs
- Agent card: https://khotem.com/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/khotem.com
- Documentation: https://khotem.com/skill.md