Pith Number

pith:NMSVGA5V

pith:2018:NMSVGA5VVY4XGRABCNIPODP5AV

not attested not anchored not stored refs pending

Sporadic Aurora near Geomagnetic Equator: In the Philippines, on 27 October 1856

Hisashi Hayakawa, Jos\'e. M. Vaquero, Yusuke Ebihara

arxiv:1808.06608 v1 · 2018-08-20 · physics.space-ph · astro-ph.EP · 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{NMSVGA5VVY4XGRABCNIPODP5AV}

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	2026-05-18T00:06:50.412114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b255303b5ae397344011350f70dfd054455a9b2c71957a75440eaa92337a04b

Aliases

arxiv: 1808.06608 · arxiv_version: 1808.06608v1 · doi: 10.48550/arxiv.1808.06608 · pith_short_12: NMSVGA5VVY4X · pith_short_16: NMSVGA5VVY4XGRAB · pith_short_8: NMSVGA5V

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/NMSVGA5VVY4XGRABCNIPODP5AV \
  | 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: 6b255303b5ae397344011350f70dfd054455a9b2c71957a75440eaa92337a04b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1532e65e2b4b914dbb2843fc509a0e49dfd304d63fbe1d9e184615bbf8fe189",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2018-08-20T12:40:39Z",
    "title_canon_sha256": "da8e12bff5716750a66201a1f7328d1ae0a5b87fde7ee2e1d4746ec20f30f348"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06608",
    "kind": "arxiv",
    "version": 1
  }
}