Pith Number

pith:WEMMJVFG

pith:2009:WEMMJVFGRJYZBKRJE4J4LC6DV4

not attested not anchored not stored refs pending

Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf

(2) University of Sheffield, 3) ((1) University of Warwick, (3) Keele University), B.T. Gaensicke (1), C.M. Copperwheat (1), J. Southworth (1, R. Hickman (1), S.P. Littlefair (2), T.R. Marsh (1), V.S. Dhillon (2)

arxiv:0911.1637 v1 · 2009-11-09 · 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{WEMMJVFGRJYZBKRJE4J4LC6DV4}

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	2026-05-18T02:10:58.045443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b118c4d4a68a7190aa292713c58bc3af0fad25e38b9cc7fca96a60daabdebc75

Aliases

arxiv: 0911.1637 · arxiv_version: 0911.1637v1 · doi: 10.48550/arxiv.0911.1637 · pith_short_12: WEMMJVFGRJYZ · pith_short_16: WEMMJVFGRJYZBKRJ · pith_short_8: WEMMJVFG

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/WEMMJVFGRJYZBKRJE4J4LC6DV4 \
  | 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: b118c4d4a68a7190aa292713c58bc3af0fad25e38b9cc7fca96a60daabdebc75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddcaf18825889bafa5ee1be88c84757f27c85debf90ea0d462372bf61afbc46b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-09T11:18:44Z",
    "title_canon_sha256": "599f154b39f534d38accb461a2fbf7765bd5b162285867eb98db98abd2960b56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1637",
    "kind": "arxiv",
    "version": 1
  }
}