Pith Number

pith:FQ4GCDWB

pith:2005:FQ4GCDWBHNIHLTZPPRERN7LJYM

not attested not anchored not stored refs pending

Galactic Chemical Evolution Redux: Atomic Numbers 6 < Z < 15

A. Kiessling (Swinburne University), B. K. Gibson, Y. Fenner

arxiv:astro-ph/0502280 v1 · 2005-02-15 · 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{FQ4GCDWBHNIHLTZPPRERN7LJYM}

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	2026-07-04T16:50:49.298221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c38610ec13b5075cf2f7c4916fd69c31d3e076947ada8c6d557d8518be57000

Aliases

arxiv: astro-ph/0502280 · arxiv_version: astro-ph/0502280v1 · doi: 10.48550/arxiv.astro-ph/0502280 · pith_short_12: FQ4GCDWBHNIH · pith_short_16: FQ4GCDWBHNIHLTZP · pith_short_8: FQ4GCDWB

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/FQ4GCDWBHNIHLTZPPRERN7LJYM \
  | 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: 2c38610ec13b5075cf2f7c4916fd69c31d3e076947ada8c6d557d8518be57000

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a311d5b45b274ea21492413f521a594f2624863e79c7dc074a459f61480d4e0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-15T01:46:53Z",
    "title_canon_sha256": "9e1a98a64c643096561f92cf78e9ffd59cf6e578bffa911cf8a81805de715f60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502280",
    "kind": "arxiv",
    "version": 1
  }
}