Pith Number

pith:B5LGIRSA

pith:2004:B5LGIRSA7H4HO3ZM44ZR5DQQQT

not attested not anchored not stored refs pending

Hubble Space Telescope Observations of Element Abundances in Low-redshift Damped Lyman-alpha Galaxies and Implications for the Global Metallicity-Redshift Relation

Daniel E. Welty, Donald G. York, James T. Lauroesch, James W. Truran, Pushpa Khare, S. Michael Fall, Varsha P. Kulkarni

arxiv:astro-ph/0409234 v1 · 2004-09-09 · 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{B5LGIRSA7H4HO3ZM44ZR5DQQQT}

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	2026-05-18T02:40:26.202056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f56644640f9f8776f2ce7331e8e1084f2246433ab24b47868935a1121eb2f8c

Aliases

arxiv: astro-ph/0409234 · arxiv_version: astro-ph/0409234v1 · doi: 10.48550/arxiv.astro-ph/0409234 · pith_short_12: B5LGIRSA7H4H · pith_short_16: B5LGIRSA7H4HO3ZM · pith_short_8: B5LGIRSA

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/B5LGIRSA7H4HO3ZM44ZR5DQQQT \
  | 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: 0f56644640f9f8776f2ce7331e8e1084f2246433ab24b47868935a1121eb2f8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2180e8482b6e26349ffa1ab71856080af59c5e1251e5909ca23e99f24063878d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-09T20:50:17Z",
    "title_canon_sha256": "0796875991902973e7fd7c26b81fa8f50a3758d41866f0c40f1171d2d6c34637"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409234",
    "kind": "arxiv",
    "version": 1
  }
}