Pith Number

pith:P6DWYEYW

pith:2017:P6DWYEYWA6JQI5CUV6SW5LCNLE

not attested not anchored not stored refs pending

Records of Auroral Candidates and Sunspots in Rikkokushi, Chronicles of Ancient Japan from Early 7th Century to 887

Akito Davis Kawamura, Harufumi Tamazawa, Hiroaki Isobe, Hisashi Hayakawa, Katsuko Namiki, Kazunari Shibata, Kiyomi Iwahashi, Yusuke Ebihara

arxiv:1708.01045 v1 · 2017-08-03 · astro-ph.SR · physics.hist-ph · physics.space-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{P6DWYEYWA6JQI5CUV6SW5LCNLE}

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	2026-05-18T00:27:46.090528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f876c13160793047454afa56eac4d590efa1d6aab53121da15cc24cbceac69d

Aliases

arxiv: 1708.01045 · arxiv_version: 1708.01045v1 · doi: 10.48550/arxiv.1708.01045 · pith_short_12: P6DWYEYWA6JQ · pith_short_16: P6DWYEYWA6JQI5CU · pith_short_8: P6DWYEYW

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/P6DWYEYWA6JQI5CUV6SW5LCNLE \
  | 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: 7f876c13160793047454afa56eac4d590efa1d6aab53121da15cc24cbceac69d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "916804a93516e25db3d5697ad0d0f7ebb80e8a95014ea1dbe8a4dc23a04f82e4",
    "cross_cats_sorted": [
      "physics.hist-ph",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-08-03T08:23:47Z",
    "title_canon_sha256": "fe6e591e242a022a39ffbe3849cd852a0c4d963ea4d2dbe24d45cf9319bc4cd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01045",
    "kind": "arxiv",
    "version": 1
  }
}