Pith Number

pith:FPC4FDNL

pith:2013:FPC4FDNLUF45I6ASHTYEW4GUPN

not attested not anchored not stored refs pending

A Systemic Study of 14 Southern Infrared Dark Clouds with the N2H+, HNC, HCO+, and HCN Lines

Jin-Long Xu, Jun-Jie Wang, Xiao-Lan Liu

arxiv:1301.5284 v1 · 2013-01-21 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FPC4FDNLUF45I6ASHTYEW4GUPN}

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	2026-05-18T01:52:04.567649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bc5c28daba179d478123cf04b70d47b6990e64d3d1286c92d1254f7b3d1f259

Aliases

arxiv: 1301.5284 · arxiv_version: 1301.5284v1 · doi: 10.48550/arxiv.1301.5284 · pith_short_12: FPC4FDNLUF45 · pith_short_16: FPC4FDNLUF45I6AS · pith_short_8: FPC4FDNL

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/FPC4FDNLUF45I6ASHTYEW4GUPN \
  | 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: 2bc5c28daba179d478123cf04b70d47b6990e64d3d1286c92d1254f7b3d1f259

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52bc34337362cba6994e130377bf06319f90e0bf6d62a1c9f67baf79f5491c16",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-01-21T09:37:11Z",
    "title_canon_sha256": "101ad2710e29ae96f3a546ca11196842cb199c85d3932efd34e5c58d62e4d8b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5284",
    "kind": "arxiv",
    "version": 1
  }
}