Pith Number

pith:F2RXRY27

pith:2026:F2RXRY27XAQYDLZM5QRNQULUV5

not attested not anchored not stored refs pending

Contrastive Reflection for Iterative Prompt Optimization

Baofen Zheng, Benjamin H. Le, Derek Koh, Jiening Zhan, Jinghui Mo, Jingwei Wu, Kevin Bevis, Lauren Elizabeth Charney, Nathaniel C. Owen, Wenqiong Liu

arxiv:2606.30840 v1 · 2026-06-29 · 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{F2RXRY27XAQYDLZM5QRNQULUV5}

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	2026-07-01T00:17:19.030269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea378e35fb82181af2cec22d85174af6cbbca9faebb7ccb2710728bcd8f5364

Aliases

arxiv: 2606.30840 · arxiv_version: 2606.30840v1 · doi: 10.48550/arxiv.2606.30840 · pith_short_12: F2RXRY27XAQY · pith_short_16: F2RXRY27XAQYDLZM · pith_short_8: F2RXRY27

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/F2RXRY27XAQYDLZM5QRNQULUV5 \
  | 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: 2ea378e35fb82181af2cec22d85174af6cbbca9faebb7ccb2710728bcd8f5364

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d89e6d4ed1186fd8efdd61f8223e87408a51f854544ace2b6f6e3dd56360d42d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-29T19:16:07Z",
    "title_canon_sha256": "2e25da78c7f053156967d6fa6472720c2aa50d20187f2373c9085ca628740ad0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.30840",
    "kind": "arxiv",
    "version": 1
  }
}