Pith Number

pith:YO3VYXFC

pith:2011:YO3VYXFCPWGLHYKTLYNG3KB4KJ

not attested not anchored not stored refs pending

Search for cold gas in z>2 damped Lyman-alpha systems: 21-cm and H_2 absorption

C. J. Salter (NAIC), C. Ledoux (ESO), D. J. Saikia (NCRA), N. Gupta (ASTRON), P. Noterdaeme (IAP), P. Petitjean (IAP), R. Srianand (IUCAA)

arxiv:1112.1438 v1 · 2011-12-06 · 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{YO3VYXFCPWGLHYKTLYNG3KB4KJ}

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	2026-05-18T01:59:16.034480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3b75c5ca27d8cb3e1535e1a6da83c524b23c03747b86c0248674f4b9e99c3e2

Aliases

arxiv: 1112.1438 · arxiv_version: 1112.1438v1 · doi: 10.48550/arxiv.1112.1438 · pith_short_12: YO3VYXFCPWGL · pith_short_16: YO3VYXFCPWGLHYKT · pith_short_8: YO3VYXFC

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/YO3VYXFCPWGLHYKTLYNG3KB4KJ \
  | 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: c3b75c5ca27d8cb3e1535e1a6da83c524b23c03747b86c0248674f4b9e99c3e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb7498cd214a2a66fc3cfdf071347fe7bb32f38d16cb33f5c3b79c6ac6c37b25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-06T22:17:56Z",
    "title_canon_sha256": "697357d83f9e6ef679eb80ca039a3a917643eb2b93bb51ba004b4e691a6f61ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1438",
    "kind": "arxiv",
    "version": 1
  }
}