Pith Number

pith:FJDUH3HE

pith:2018:FJDUH3HE7GZI5IKID6WTKV42LH

not attested not anchored not stored refs pending

A Great Space Weather Event in February 1730

Akito D. Kawamura, Harufumi Tamazawa, Hiroaki Isobe, Hisashi Hayakawa, Jos\'e M. Vaquero, Kentaro Hattori, Kiyomi Iwahashi, Mar\'ia de la Cruz Gallego, Satoshi Hayakawa, V\'ictor M. S. Carrasco, Yoshikazu Watanabe, Yusuke Ebihara

arxiv:1807.06496 v1 · 2018-07-17 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FJDUH3HE7GZI5IKID6WTKV42LH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:10:32.862739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a4743ece4f9b28ea1481fad35579a59c4b94dc9ae7d71fdfb3858a4f6c73b40

Aliases

arxiv: 1807.06496 · arxiv_version: 1807.06496v1 · doi: 10.48550/arxiv.1807.06496 · pith_short_12: FJDUH3HE7GZI · pith_short_16: FJDUH3HE7GZI5IKI · pith_short_8: FJDUH3HE

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/FJDUH3HE7GZI5IKID6WTKV42LH \
  | 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: 2a4743ece4f9b28ea1481fad35579a59c4b94dc9ae7d71fdfb3858a4f6c73b40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d60cf7cc0588ca10414f0a9adb2942f86565d5d716c990522eae9ba6a0ff2a3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-17T15:19:21Z",
    "title_canon_sha256": "761d03591d8c372d0af209b91c5c6514b93c8edaa5a57d0493b020f5c163f788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06496",
    "kind": "arxiv",
    "version": 1
  }
}