Pith Number

pith:7LAIPXBA

pith:2009:7LAIPXBAFIXGO6WPBW45CSNFKE

not attested not anchored not stored refs pending

Chemical Abundances in Star-Forming Galaxies at High Redshift

Dawn K. Erb (UCSB)

arxiv:0912.0313 v1 · 2009-12-02 · astro-ph.CO · 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{7LAIPXBAFIXGO6WPBW45CSNFKE}

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.

Cited by

1 paper in Pith

Cosmic evolution of the helium and oxygen abundances in type 2 Active Galactic Nuclei: Helium-loud AGNs

Receipt and verification

First computed	2026-05-18T02:10:34.814071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fac087dc202a2e677acf0db9d149a5510d57ad99459f290d12f84d69ffd66ed5

Aliases

arxiv: 0912.0313 · arxiv_version: 0912.0313v1 · doi: 10.48550/arxiv.0912.0313 · pith_short_12: 7LAIPXBAFIXG · pith_short_16: 7LAIPXBAFIXGO6WP · pith_short_8: 7LAIPXBA

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/7LAIPXBAFIXGO6WPBW45CSNFKE \
  | 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: fac087dc202a2e677acf0db9d149a5510d57ad99459f290d12f84d69ffd66ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ead3746d3975a96da5bc46bb06b36e0e10e654eab37e9c7e63a115508a83055",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-02T01:20:11Z",
    "title_canon_sha256": "b4755c29beef4fcc88bed1d76bfd7c2b65d939b084612917ee458cc0923c1000"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0313",
    "kind": "arxiv",
    "version": 1
  }
}