Pith Number

pith:ZH3W5RY2

pith:2018:ZH3W5RY25RKPTXR3CRXZ5UCPLL

not attested not anchored not stored refs pending

Is the Spiral Galaxy a Cosmic Hurricane?

Ling Liu, Tingting Zheng, Zexin Cao

arxiv:1802.02734 v2 · 2018-02-08 · 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{ZH3W5RY25RKPTXR3CRXZ5UCPLL}

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	2026-05-18T00:23:04.750868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9f76ec71aec54f9de3b146f9ed04f5ae9e7dec12556533e7d87ed1d5cd8a429

Aliases

arxiv: 1802.02734 · arxiv_version: 1802.02734v2 · doi: 10.48550/arxiv.1802.02734 · pith_short_12: ZH3W5RY25RKP · pith_short_16: ZH3W5RY25RKPTXR3 · pith_short_8: ZH3W5RY2

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/ZH3W5RY25RKPTXR3CRXZ5UCPLL \
  | 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: c9f76ec71aec54f9de3b146f9ed04f5ae9e7dec12556533e7d87ed1d5cd8a429

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d09550ad38c10ad4707b141bfb49e447f27e54354d51ee142faa02093f1b0a5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-08T07:52:55Z",
    "title_canon_sha256": "0874a464376cafcdfec26e7044da15a4373b8ce79e013f78b2e538d702d449ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02734",
    "kind": "arxiv",
    "version": 2
  }
}