Pith Number

pith:XEY7VL7U

pith:2011:XEY7VL7UB37GPAXDANG2VWQBI2

not attested not anchored not stored refs pending

On the Progenitor System of Nova V2491 Cygni

(2) INAF Astronomical Observatory of Padova, 3) ((1) Astrophysics Research Institute, 36012 Asiago (VI), (3) ANS Collaboration c/o Astronomical Observatory, Birkenhead, CH41 1LD, Egerton Wharf, Italy, Italy), Liverpool John Moores University, M. F. Bode (1), M. J. Darnley (1), UK, U. Munari (2, V. A. R. M. Ribeiro (1), via dell'Osservatorio

arxiv:1104.3482 v1 · 2011-04-18 · 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{XEY7VL7UB37GPAXDANG2VWQBI2}

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	2026-05-18T02:22:02.471754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b931faaff40efe6782e3034daada01469947b1240aa82d394d8f1b072dbac14a

Aliases

arxiv: 1104.3482 · arxiv_version: 1104.3482v1 · doi: 10.48550/arxiv.1104.3482 · pith_short_12: XEY7VL7UB37G · pith_short_16: XEY7VL7UB37GPAXD · pith_short_8: XEY7VL7U

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/XEY7VL7UB37GPAXDANG2VWQBI2 \
  | 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: b931faaff40efe6782e3034daada01469947b1240aa82d394d8f1b072dbac14a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa94d6161747a3b3faa4fff7e45717ef7067c739255575dc469723bd4a0497d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-04-18T13:46:12Z",
    "title_canon_sha256": "9e28145d612932b76c7d675d27e282befd4cb0ba46fa97973e7fb5d0ecd6703d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3482",
    "kind": "arxiv",
    "version": 1
  }
}