Pith Number

pith:NEFQKTFO

pith:1996:NEFQKTFO24C4G427SCCPMMQNS5

not attested not anchored not stored refs pending

A Stochastic Approach to Chemical Evolution

Craig J. Copi (University of Chicago)

arxiv:astro-ph/9610224 v1 · 1996-10-28 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NEFQKTFO24C4G427SCCPMMQNS5}

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	2026-07-04T16:00:17.593536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

690b054caed705c3735f9084f6320d977cdcc6d3102c5253ee5aabefb731c511

Aliases

arxiv: astro-ph/9610224 · arxiv_version: astro-ph/9610224v1 · doi: 10.48550/arxiv.astro-ph/9610224 · pith_short_12: NEFQKTFO24C4 · pith_short_16: NEFQKTFO24C4G427 · pith_short_8: NEFQKTFO

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/NEFQKTFO24C4G427SCCPMMQNS5 \
  | 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: 690b054caed705c3735f9084f6320d977cdcc6d3102c5253ee5aabefb731c511

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ebef1544f58b7f64b0e933b229b1a4574f9be358f0da86e78006a22e2d12683",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-10-28T18:52:26Z",
    "title_canon_sha256": "2073f3a03e4c1ca1b81748591a3b0e8cd1ce6c30350c050ebe19d97efa0ae059"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9610224",
    "kind": "arxiv",
    "version": 1
  }
}