Pith Number

pith:PQHRTMWD

pith:2025:PQHRTMWDA4KONSQZABQU32QFD2

not attested not anchored not stored refs pending

Classifying metal-poor stars with machine learning using nucleosynthesis calculations

Benoit Cote, Kayle Majic, Maude Lariviere, Michelle P. Kuchera, Nicole Vassh, Richard M. Woloshyn, Yilin Wang

arxiv:2505.14563 v1 · 2025-05-20 · nucl-th · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQHRTMWDA4KONSQZABQU32QFD2}

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	2026-07-05T11:06:15.581605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c0f19b2c30714e6ca1900614dea051eb1126697e56aadd0da9a979f45f55e65

Aliases

arxiv: 2505.14563 · arxiv_version: 2505.14563v1 · doi: 10.48550/arxiv.2505.14563 · pith_short_12: PQHRTMWDA4KO · pith_short_16: PQHRTMWDA4KONSQZ · pith_short_8: PQHRTMWD

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/PQHRTMWDA4KONSQZABQU32QFD2 \
  | 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: 7c0f19b2c30714e6ca1900614dea051eb1126697e56aadd0da9a979f45f55e65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaee690484f2ea6dae35dd0b4ef6bbe094232e42997acd740ab8387cfb0e1c25",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "nucl-th",
    "submitted_at": "2025-05-20T16:24:11Z",
    "title_canon_sha256": "2375c6bf9ba5ac173c12f018faf26cbc5f432c1e043155920f93254abb14d8c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.14563",
    "kind": "arxiv",
    "version": 1
  }
}