Pith Number

pith:2YQCONF5

pith:2010:2YQCONF5VSASNCO6YXLSFSRZRF

not attested not anchored not stored refs pending

H I Column Densities, Metallicities, and Dust Extinction of Metal-Strong Damped Lya Systems

(2) University of Arizona, (3) University of Victoria, (4) Observatoire de Geneve), J. Xavier Prochaska (1) Stephane Herbert-Fort (2), Kyle F. Kaplan (1), Miroslava Dessauges-Zavadsky (4) ((1) UCSC, Sara L. Ellison (3), UCO/Lick Observatory

arxiv:1004.3319 v1 · 2010-04-19 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2YQCONF5VSASNCO6YXLSFSRZRF}

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	2026-05-18T02:07:56.523025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6202734bdac812689dec5d722ca3989474d9eec6ec68716339e3d2597ccc930

Aliases

arxiv: 1004.3319 · arxiv_version: 1004.3319v1 · doi: 10.48550/arxiv.1004.3319 · pith_short_12: 2YQCONF5VSAS · pith_short_16: 2YQCONF5VSASNCO6 · pith_short_8: 2YQCONF5

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/2YQCONF5VSASNCO6YXLSFSRZRF \
  | 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: d6202734bdac812689dec5d722ca3989474d9eec6ec68716339e3d2597ccc930

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b64f53a8554a9972e0ff6006ad780b5032ea8258432bc72a910aacc66ecf55cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-19T22:40:10Z",
    "title_canon_sha256": "79777ca39e427644da5350020096d26a899f4d83ec942fd73bf79eb307f1b944"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3319",
    "kind": "arxiv",
    "version": 1
  }
}