Pith Number

pith:BFEK5UHM

pith:2015:BFEK5UHM2UYPWDFQ3WJYSFBP3Z

not attested not anchored not stored refs pending

Neutral chlorine and molecular hydrogen at high redshift

A.V. Ivanchik, C. Ledoux, D.A. Varshalovich, P. Noterdaeme, P. Petitjean, R. Srianand, S.A. Balashev, V.V. Klimenko

arxiv:1501.07165 v1 · 2015-01-28 · 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{BFEK5UHM2UYPWDFQ3WJYSFBP3Z}

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	2026-05-18T01:41:06.125121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0948aed0ecd530fb0cb0dd9389142fde566d6eaa41453266abfde50734d6ce63

Aliases

arxiv: 1501.07165 · arxiv_version: 1501.07165v1 · doi: 10.48550/arxiv.1501.07165 · pith_short_12: BFEK5UHM2UYP · pith_short_16: BFEK5UHM2UYPWDFQ · pith_short_8: BFEK5UHM

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/BFEK5UHM2UYPWDFQ3WJYSFBP3Z \
  | 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: 0948aed0ecd530fb0cb0dd9389142fde566d6eaa41453266abfde50734d6ce63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69262630b3b0b76151a953ae17489d222fc3b09e5543dc5d6ed11179e76933fa",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-28T16:04:07Z",
    "title_canon_sha256": "c1ec81c168214340672bb6428c0065a4eb26d93a39a29726cce3d3ca114df4c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07165",
    "kind": "arxiv",
    "version": 1
  }
}