Pith Number

pith:Q2H5WIHR

pith:2011:Q2H5WIHREJDDRPSK2R3CAG4RRG

not attested not anchored not stored refs pending

The 2011 Eruption of the Recurrent Nova T Pyxidis; the Discovery, the Pre-eruption Rise, the Pre-eruption Orbital Period, and the Reason for the Long Delay

Alan Plummer, Arlo U. Landolt, Bradley E. Schaefer, Gordon Myers, Grzegorz Pojmanski, Margaret Streamer, Michael Linnolt, Peter Nelson, Rod Stubbings, Rolf Carstens, Stephen Kerr, Thomas Richards, William G. Dillon

arxiv:1109.0065 v2 · 2011-09-01 · 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{Q2H5WIHREJDDRPSK2R3CAG4RRG}

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	2026-05-18T02:25:11.851033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

868fdb20f1224638be4ad476201b9189b52565914bc54caee23761748a67fac4

Aliases

arxiv: 1109.0065 · arxiv_version: 1109.0065v2 · doi: 10.48550/arxiv.1109.0065 · pith_short_12: Q2H5WIHREJDD · pith_short_16: Q2H5WIHREJDDRPSK · pith_short_8: Q2H5WIHR

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/Q2H5WIHREJDDRPSK2R3CAG4RRG \
  | 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: 868fdb20f1224638be4ad476201b9189b52565914bc54caee23761748a67fac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e46b23bf89f86e638fdbf3a6ece55236d893e5300508be2bdf025a391f12374",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-01T01:58:08Z",
    "title_canon_sha256": "c6ffc668b543dd0254230750961ec555f0c9bf4b6c17fdefc041a2ed8bcad5e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0065",
    "kind": "arxiv",
    "version": 2
  }
}