Pith Number

pith:VAR4DK5T

pith:2015:VAR4DK5T7OZ6PZ327TPXEQEFCW

not attested not anchored not stored refs pending

Presumable European aurorae in the mid AD 770s were halo displays

Dagmar Neuhaeuser (Jena), Ralph Neuhaeuser (U Jena)

arxiv:1508.07955 v1 · 2015-08-27 · physics.hist-ph · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VAR4DK5T7OZ6PZ327TPXEQEFCW}

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	2026-05-18T01:34:31.138594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a823c1abb3fbb3e7e77afcdf72408515bc74352b626a11801bac3984cc99faf4

Aliases

arxiv: 1508.07955 · arxiv_version: 1508.07955v1 · doi: 10.48550/arxiv.1508.07955 · pith_short_12: VAR4DK5T7OZ6 · pith_short_16: VAR4DK5T7OZ6PZ32 · pith_short_8: VAR4DK5T

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/VAR4DK5T7OZ6PZ327TPXEQEFCW \
  | 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: a823c1abb3fbb3e7e77afcdf72408515bc74352b626a11801bac3984cc99faf4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe8ed0109bd84cb13d5e5e7a602d251c03a1d920295a32a053c238f223cd4d52",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2015-08-27T09:10:56Z",
    "title_canon_sha256": "0e47c78b05fd12f83801d87b121f87a2d8a35a0a86051fd93672d9a091ae195f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07955",
    "kind": "arxiv",
    "version": 1
  }
}