Pith Number

pith:P7ILJL7X

pith:2010:P7ILJL7XUC35KA7VVQBSMLJD5V

not attested not anchored not stored refs pending

First solar butterfly diagram from Schwabe's observations in 1825-1867

Anastasia Abdolvand, Rainer Arlt

arxiv:1010.3131 v1 · 2010-10-15 · 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{P7ILJL7XUC35KA7VVQBSMLJD5V}

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	2026-05-18T02:05:04.523638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fd0b4aff7a0b7d503f5ac03262d23ed7f323ab311d0f477802e658b76c45fab

Aliases

arxiv: 1010.3131 · arxiv_version: 1010.3131v1 · doi: 10.48550/arxiv.1010.3131 · pith_short_12: P7ILJL7XUC35 · pith_short_16: P7ILJL7XUC35KA7V · pith_short_8: P7ILJL7X

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/P7ILJL7XUC35KA7VVQBSMLJD5V \
  | 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: 7fd0b4aff7a0b7d503f5ac03262d23ed7f323ab311d0f477802e658b76c45fab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f57a8bac7ac62d8544153161b7848b963669aaba272af08fcef52c407542e435",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-10-15T11:44:00Z",
    "title_canon_sha256": "9c754c5c53de4ec426b08465a508f92fbe1c8721f886e2f7b8271c97d4d4e41f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3131",
    "kind": "arxiv",
    "version": 1
  }
}