Pith Number

pith:E4B6IFQZ

pith:2004:E4B6IFQZPQKXAME5OZGTBRMKZQ

not attested not anchored not stored refs pending

Surprising Sun

J. Ballot, J. Ferguson, L. Piau, P.A.P. Nghiem, P. Lambert, R. A. Garcia, S. Couvidat, S. Turck-Chieze

arxiv:astro-ph/0407176 v1 · 2004-07-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4B6IFQZPQKXAME5OZGTBRMKZQ}

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	2026-05-18T01:07:32.383274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2703e416197c1570309d764d30c58acc2f93a9c8d481742169a8e868c2c12225

Aliases

arxiv: astro-ph/0407176 · arxiv_version: astro-ph/0407176v1 · doi: 10.48550/arxiv.astro-ph/0407176 · pith_short_12: E4B6IFQZPQKX · pith_short_16: E4B6IFQZPQKXAME5 · pith_short_8: E4B6IFQZ

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/E4B6IFQZPQKXAME5OZGTBRMKZQ \
  | 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: 2703e416197c1570309d764d30c58acc2f93a9c8d481742169a8e868c2c12225

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb2520406d93c28320cb03c658c40a330db87cffe48c859031e9ba5d9836fa8c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-08T18:57:42Z",
    "title_canon_sha256": "6dce0e353c2ec83c966d2eb9d503499b7e2629a4554b6b19ca9ba4b67d017c8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407176",
    "kind": "arxiv",
    "version": 1
  }
}