Pith Number

pith:ZARS46XX

pith:2026:ZARS46XXOQDCPYBAFGMBDXZRJM

not attested not anchored not stored refs pending

FAPO: Fully Autonomous Prompt Optimization of Multi-Step LLM Pipelines

Aman Priyanshu, Amin Karbasi, Baturay Saglam, Blaine Nelson, Huaibo Zhao, Paul Kassianik, Supriti Vijay

arxiv:2606.19605 v1 · 2026-06-17 · cs.SE · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZARS46XXOQDCPYBAFGMBDXZRJM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-19T16:12:30.016490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8232e7af7740627e020299811df314b36b6eb6f9cba314872862d5406c421b3

Aliases

arxiv: 2606.19605 · arxiv_version: 2606.19605v1 · doi: 10.48550/arxiv.2606.19605 · pith_short_12: ZARS46XXOQDC · pith_short_16: ZARS46XXOQDCPYBA · pith_short_8: ZARS46XX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZARS46XXOQDCPYBAFGMBDXZRJM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c8232e7af7740627e020299811df314b36b6eb6f9cba314872862d5406c421b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "204a437a4c7b1ce36755084f5c01a0c31a01c2b2d54663adee5dd990f5313fd9",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-06-17T21:16:45Z",
    "title_canon_sha256": "e4316bd8c22e2412f1605379d24416244e66a07f01b4236f94a3a23152070382"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19605",
    "kind": "arxiv",
    "version": 1
  }
}