Pith Number

pith:72JIWDBI

pith:2018:72JIWDBIYKGBHFNLRTGLMTHXUC

not attested not anchored not stored refs pending

Improved Selection Criteria for HII Regions, based on IRAS Sources

A. J. Walsh, Bo Zhang, G. C. MacLeod, J. P. Macquart, P. J. Hancock, Qing-Zeng Yan, Xi Chen, Ye Xu, Zheng-Hong Tang

arxiv:1802.08354 v1 · 2018-02-23 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{72JIWDBIYKGBHFNLRTGLMTHXUC}

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	2026-05-18T00:21:19.491298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe928b0c28c28c1395ab8cccb64cf7a0b8ed75bcc60ccc3a3d5ac3fdaa362fc1

Aliases

arxiv: 1802.08354 · arxiv_version: 1802.08354v1 · doi: 10.48550/arxiv.1802.08354 · pith_short_12: 72JIWDBIYKGB · pith_short_16: 72JIWDBIYKGBHFNL · pith_short_8: 72JIWDBI

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/72JIWDBIYKGBHFNLRTGLMTHXUC \
  | 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: fe928b0c28c28c1395ab8cccb64cf7a0b8ed75bcc60ccc3a3d5ac3fdaa362fc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "490264ad0e520ceecf517769c92dec0b612789fa77f2fc818d9da59ac44f805d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-23T00:40:07Z",
    "title_canon_sha256": "4aa9dac84489946a2f46d327c2c5edf2db58bfc0c300782c244cb2d0c26967fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08354",
    "kind": "arxiv",
    "version": 1
  }
}