Pith Number

pith:4CQUAYRM

pith:2016:4CQUAYRM5DB3ZENFWE5SYVUHVE

not attested not anchored not stored refs pending

The Stability of F-star Brightness on Century Timescales

Daniel Angerhausen, Joshua Pepper, Keivan G. Stassun, Michael B. Lund, Michael Hippke

arxiv:1605.02760 v1 · 2016-05-09 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CQUAYRM5DB3ZENFWE5SYVUHVE}

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	2026-05-18T01:09:34.495030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0a140622ce8c3bc91a5b13b2c5687a9354045e960eae2a282a4d485fe725965

Aliases

arxiv: 1605.02760 · arxiv_version: 1605.02760v1 · doi: 10.48550/arxiv.1605.02760 · pith_short_12: 4CQUAYRM5DB3 · pith_short_16: 4CQUAYRM5DB3ZENF · pith_short_8: 4CQUAYRM

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/4CQUAYRM5DB3ZENFWE5SYVUHVE \
  | 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: e0a140622ce8c3bc91a5b13b2c5687a9354045e960eae2a282a4d485fe725965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49b69e7a4ce8e52f95c39b39eb10545b235cd4de453ee52a90618643235460c7",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-05-09T20:19:24Z",
    "title_canon_sha256": "95b724a2f7f17067e742484e12ebea17a18ce67eb647c2777410ad1ef9e5ddee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02760",
    "kind": "arxiv",
    "version": 1
  }
}