Pith Number

pith:AFFQPE4I

pith:2018:AFFQPE4IXA7ZEJTFZFY77DVAEW

not attested not anchored not stored refs pending

Evolution of N/O ratios in galaxies from cosmological hydrodynamical simulations

Chiaki Kobayashi, Fiorenzo Vincenzo

arxiv:1801.07911 v2 · 2018-01-24 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFFQPE4IXA7ZEJTFZFY77DVAEW}

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	2026-05-18T00:17:07.531211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

014b079388b83f922665c971ff8ea02598961a7fe318f8114c26063dce8c2a96

Aliases

arxiv: 1801.07911 · arxiv_version: 1801.07911v2 · doi: 10.48550/arxiv.1801.07911 · pith_short_12: AFFQPE4IXA7Z · pith_short_16: AFFQPE4IXA7ZEJTF · pith_short_8: AFFQPE4I

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/AFFQPE4IXA7ZEJTFZFY77DVAEW \
  | 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: 014b079388b83f922665c971ff8ea02598961a7fe318f8114c26063dce8c2a96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50d30fd1bd029cd76a57cefc606415e8891434944e9dd36032e2de3d6d044f29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-24T10:17:00Z",
    "title_canon_sha256": "89b5351204ecd0390f3b32e576ace9b1aea975b9fba7a4534ed82fd525987d2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07911",
    "kind": "arxiv",
    "version": 2
  }
}