Pith Number

pith:NFK3ABJI

pith:2012:NFK3ABJIU3S2227NHBVY2FAMKE

not attested not anchored not stored refs pending

Estimating the frequency of extremely energetic solar events, based on solar, stellar, lunar, and terrestrial records

C. J. Schrijver, D. R. Soderblom, E. W. Cliver, E. W. Wolff, H. S. Hudson, I. G. Usoskin, J. Beer, K. G. McCracken, M. Guedel, R. A. Osten, Th. Peter, U. Baltensperger

arxiv:1206.4889 v1 · 2012-06-21 · 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{NFK3ABJIU3S2227NHBVY2FAMKE}

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	2026-05-18T03:52:54.031277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6955b00528a6e5ad6bed386b8d140c5137b8473cfcf8bd179bbaefa2a39625a6

Aliases

arxiv: 1206.4889 · arxiv_version: 1206.4889v1 · doi: 10.48550/arxiv.1206.4889 · pith_short_12: NFK3ABJIU3S2 · pith_short_16: NFK3ABJIU3S2227N · pith_short_8: NFK3ABJI

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/NFK3ABJIU3S2227NHBVY2FAMKE \
  | 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: 6955b00528a6e5ad6bed386b8d140c5137b8473cfcf8bd179bbaefa2a39625a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d0ba6dc9c5d9893dd242cf3122cbf39ff8d4b1bed0807542ec1be8a904ebdb9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-06-21T14:13:29Z",
    "title_canon_sha256": "bfc1b11bf5a2217e8e062175d9748cb6849ca060c0c82e7a996b5197c3939bc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.4889",
    "kind": "arxiv",
    "version": 1
  }
}