Pith Number

pith:5NJUOKJH

pith:2019:5NJUOKJH4TQW4ZP7U7AYFJXL2F

not attested not anchored not stored refs pending

A Transit of Venus Possibly Misinterpreted as an Unaided-Eye Sunspot Observation in China on 9 December 1874

David M. Willis, F. Richard Stephenson, Hisashi Hayakawa, Kentaro Hattori, Kiyotaka Tanikawa, Lee T. Macdonald, Matthew N. Wild, Mitsuru S\^oma, Shinsuke Imada

arxiv:1908.02452 v1 · 2019-08-07 · astro-ph.SR · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5NJUOKJH4TQW4ZP7U7AYFJXL2F}

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	2026-07-04T23:52:09.090264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb53472927e4e16e65ffa7c182a6ebd1764b2e3d422f0c02f05efc18f818e63f

Aliases

arxiv: 1908.02452 · arxiv_version: 1908.02452v1 · doi: 10.48550/arxiv.1908.02452 · pith_short_12: 5NJUOKJH4TQW · pith_short_16: 5NJUOKJH4TQW4ZP7 · pith_short_8: 5NJUOKJH

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/5NJUOKJH4TQW4ZP7U7AYFJXL2F \
  | 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: eb53472927e4e16e65ffa7c182a6ebd1764b2e3d422f0c02f05efc18f818e63f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8fb4079313ede7d913beecffa86190d4f4b3e413d4923f5ba079a6ea74a269e",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-07T06:07:05Z",
    "title_canon_sha256": "6573393e1a70f7cf16d24c34ffea4b7a61c25d41a6d55587215daade5a9c4909"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02452",
    "kind": "arxiv",
    "version": 1
  }
}