Pith Number

pith:LPBRHAZM

pith:2009:LPBRHAZM4LNM2IMWZTRYTIN77P

not attested not anchored not stored refs pending

Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey II - Data Release 7

C. Ledoux, P. Noterdaeme, P. Petitjean, R. Srianand

arxiv:0908.1574 v1 · 2009-08-11 · 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{LPBRHAZM4LNM2IMWZTRYTIN77P}

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	2026-05-18T02:12:35.432856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5bc313832ce2dacd2196cce389a1bffbf934f82e9de142ef5282a8dcbddfe6c2

Aliases

arxiv: 0908.1574 · arxiv_version: 0908.1574v1 · doi: 10.48550/arxiv.0908.1574 · pith_short_12: LPBRHAZM4LNM · pith_short_16: LPBRHAZM4LNM2IMW · pith_short_8: LPBRHAZM

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/LPBRHAZM4LNM2IMWZTRYTIN77P \
  | 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: 5bc313832ce2dacd2196cce389a1bffbf934f82e9de142ef5282a8dcbddfe6c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78f9c83ccd8a702a9fe6d249463353265278d0c51eac06e31edbd35343a8f604",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-11T20:10:22Z",
    "title_canon_sha256": "e2a16bd56f0e5adfc3cd73c1b6709ffcd8e694cccacf00e86dea53e4a16e804c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1574",
    "kind": "arxiv",
    "version": 1
  }
}