Pith Number

pith:WTCYDYEG

pith:2011:WTCYDYEGF4DJ7EWWZPRHKMHSGH

not attested not anchored not stored refs pending

Searching for binary central stars of planetary nebulae with Kepler

D. Douchin, G. H. Jacoby, M. Kronberger, O. De Marco, S. B. Howell

arxiv:1110.4436 v2 · 2011-10-20 · 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{WTCYDYEGF4DJ7EWWZPRHKMHSGH}

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	2026-05-18T02:00:08.159827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4c581e0862f069f92d6cbe27530f231c7cbbcc58ece75a379bd8393276a6493

Aliases

arxiv: 1110.4436 · arxiv_version: 1110.4436v2 · doi: 10.48550/arxiv.1110.4436 · pith_short_12: WTCYDYEGF4DJ · pith_short_16: WTCYDYEGF4DJ7EWW · pith_short_8: WTCYDYEG

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/WTCYDYEGF4DJ7EWWZPRHKMHSGH \
  | 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: b4c581e0862f069f92d6cbe27530f231c7cbbcc58ece75a379bd8393276a6493

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b80299c67c0768b160c58a21d66c44d43c04cec64c5c640188bb5f51b33984a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-10-20T03:52:42Z",
    "title_canon_sha256": "00fe0cec31ed28c40afb6071b26f451c3c4bb9dda673dd2ef4d83032c5aab55b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4436",
    "kind": "arxiv",
    "version": 2
  }
}