Pith Number

pith:QDQKU4J6

pith:2010:QDQKU4J6WG4D47SK3WZT23B7G3

not attested not anchored not stored refs pending

Multi-wavelength observations of the helium dwarf nova KL Dra through its outburst cycle

Chris Copperwheat (Warwick Univ), C. Simon Jeffery (Armagh), Danny Steeghs (Warwick), Gavin Ramsay (Armagh Observatory), Iwona Kotko (Jagiellonian University), Peter Wheatley (Warwick), Simon Rosen (Leicester Univ), Tom Barclay (Armagh, Tom Marsh (Warwick), UCL/MSSL)

arxiv:1005.3398 v1 · 2010-05-19 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDQKU4J6WG4D47SK3WZT23B7G3}

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	2026-05-18T02:07:17.037779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80e0aa713eb1b83e7e4addb33d6c3f36f8a95734910826be0327e82ec5ba614d

Aliases

arxiv: 1005.3398 · arxiv_version: 1005.3398v1 · doi: 10.48550/arxiv.1005.3398 · pith_short_12: QDQKU4J6WG4D · pith_short_16: QDQKU4J6WG4D47SK · pith_short_8: QDQKU4J6

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/QDQKU4J6WG4D47SK3WZT23B7G3 \
  | 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: 80e0aa713eb1b83e7e4addb33d6c3f36f8a95734910826be0327e82ec5ba614d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b86a9823ce14ea04f62adf2e0a8eecec8d1a936ce9dfe481b4459252d105406",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-05-19T10:12:34Z",
    "title_canon_sha256": "7fb662cd9134f4f7acb5c7f91c8abb9743b7baa9e32ea25c03e739dc43be3368"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3398",
    "kind": "arxiv",
    "version": 1
  }
}