Pith Number

pith:2WDNRXJI

pith:2018:2WDNRXJI3DFO5SHGJLYW5OQYLU

not attested not anchored not stored refs pending

Spotting high-z molecular absorbers using neutral carbon: Results from a complete spectroscopic survey with the VLT

C. Ledoux, P. Noterdaeme, P. Petitjean, R. Srianand, S. Balashev, S. L\'opez, S. Zou

arxiv:1801.08357 v2 · 2018-01-25 · astro-ph.GA · 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{2WDNRXJI3DFO5SHGJLYW5OQYLU}

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	2026-05-18T00:17:40.921558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d586d8dd28d8caeec8e64af16eba185d33eeccd898dad10423770ddbddd5ac1f

Aliases

arxiv: 1801.08357 · arxiv_version: 1801.08357v2 · doi: 10.48550/arxiv.1801.08357 · pith_short_12: 2WDNRXJI3DFO · pith_short_16: 2WDNRXJI3DFO5SHG · pith_short_8: 2WDNRXJI

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/2WDNRXJI3DFO5SHGJLYW5OQYLU \
  | 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: d586d8dd28d8caeec8e64af16eba185d33eeccd898dad10423770ddbddd5ac1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff83a03dbfabc224736950d9ea2ac6e7aa04badba95ecafae7295a7c8dd24a1b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-25T11:23:25Z",
    "title_canon_sha256": "77441be55dde50f0961f2107233de284446130dbf52138798ee4ea8a9b1be8d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08357",
    "kind": "arxiv",
    "version": 2
  }
}