Pith Number

pith:5R4TCHSS

pith:2019:5R4TCHSSONBSOXRDLQMRYEBGCO

not attested not anchored not stored refs pending

The Celestial Sign in the Anglo-Saxon Chronicle in the 770s: Insights on Contemporary Solar Activity

Christopher J. Scott, David M. Willis, F. Richard Stephenson, Hisashi Hayakawa, Julia Wilkinson, Matthew N. Wild, Yusuke Ebihara, Yuta Uchikawa

arxiv:1903.03075 v1 · 2019-03-07 · 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{5R4TCHSSONBSOXRDLQMRYEBGCO}

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	2026-05-17T23:48:30.039269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec79311e527343275e235c191c1026138ebbf3f72fddd3b9f9446cc36ec50b4c

Aliases

arxiv: 1903.03075 · arxiv_version: 1903.03075v1 · doi: 10.48550/arxiv.1903.03075 · pith_short_12: 5R4TCHSSONBS · pith_short_16: 5R4TCHSSONBSOXRD · pith_short_8: 5R4TCHSS

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/5R4TCHSSONBSOXRDLQMRYEBGCO \
  | 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: ec79311e527343275e235c191c1026138ebbf3f72fddd3b9f9446cc36ec50b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "606041a4d38c07943d73b676ca29d23e43f3b518885214396d7c28863a128f01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-07T17:57:26Z",
    "title_canon_sha256": "bfb96e04a33d72b81d9be52e44beb6f272dc3f8302f6830082c12f1eae38afff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03075",
    "kind": "arxiv",
    "version": 1
  }
}