Pith Number

pith:PEFAM6V2

pith:2026:PEFAM6V2KNFLZ4KIEF2P6BTTH6

not attested not anchored not stored refs pending

MedCalc-R1: Knowledge-Guided Reward Framework for Medical Mathematical Reasoning

Fanshu Meng, Haotian Wang, Jingchi Jiang, Lian Yan, Xingzhi Yao, Ye He, Yi Guan

arxiv:2608.08623 v1 · 2026-08-09 · 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{PEFAM6V2KNFLZ4KIEF2P6BTTH6}

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	2026-08-11T01:23:11.904176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

790a067aba534abcf1482174ff06733f9a9896bffb78a95c44605cca79d0a10c

Aliases

arxiv: 2608.08623 · arxiv_version: 2608.08623v1 · doi: 10.48550/arxiv.2608.08623 · pith_short_12: PEFAM6V2KNFL · pith_short_16: PEFAM6V2KNFLZ4KI · pith_short_8: PEFAM6V2

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/PEFAM6V2KNFLZ4KIEF2P6BTTH6 \
  | 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: 790a067aba534abcf1482174ff06733f9a9896bffb78a95c44605cca79d0a10c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d3f98f5ff73414732e693d2aaad03f82981bd1adb17adba5bcd12be25ace9fd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-08-09T10:13:20Z",
    "title_canon_sha256": "e0cd4f5b3e00702003616bed6b1c341e1a5903690e8fbed2f31e33adc994cbeb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.08623",
    "kind": "arxiv",
    "version": 1
  }
}