Pith Number

pith:5SK4BC3L

pith:2018:5SK4BC3LUYFCLHBEOUGBTZUNNS

not attested not anchored not stored refs pending

Solar activity over nine millennia: A consistent multi-proxy reconstruction

Chi Ju Wu, E. Bard, G. A. Kovaltsov, I. G. Usoskin, M. Baroni, N. Krivova, S. K. Solanki

arxiv:1804.01302 v1 · 2018-04-04 · 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{5SK4BC3LUYFCLHBEOUGBTZUNNS}

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	2026-05-18T00:09:53.663419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec95c08b6ba60a259c24750c19e68d6c9a23a4014bf18741463930729573be4f

Aliases

arxiv: 1804.01302 · arxiv_version: 1804.01302v1 · doi: 10.48550/arxiv.1804.01302 · pith_short_12: 5SK4BC3LUYFC · pith_short_16: 5SK4BC3LUYFCLHBE · pith_short_8: 5SK4BC3L

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/5SK4BC3LUYFCLHBEOUGBTZUNNS \
  | 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: ec95c08b6ba60a259c24750c19e68d6c9a23a4014bf18741463930729573be4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1680494a37500b8109820b3cadbc9c5ce8ede454811cd5f64b399f3372eebda8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-04T08:50:21Z",
    "title_canon_sha256": "b6088ea622251e4e6dfb14dc049650ba16a101393209818c16beff41f82c9f88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01302",
    "kind": "arxiv",
    "version": 1
  }
}