Pith Number

pith:Q74ENNE7

pith:2011:Q74ENNE7PTDWUT5RXDZFMREY34

not attested not anchored not stored refs pending

Spectral Variability of LBV star V532 (Romano's star)

A.F. Valeev, A.V. Zharova, O.N. Sholukhova, S.N. Fabrika, V.P. Goranskij

arxiv:1105.0123 v1 · 2011-04-30 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q74ENNE7PTDWUT5RXDZFMREY34}

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	2026-05-18T04:23:12.438434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87f846b49f7cc76a4fb1b8f2564498df3ca64664345749b588504ee8938338aa

Aliases

arxiv: 1105.0123 · arxiv_version: 1105.0123v1 · doi: 10.48550/arxiv.1105.0123 · pith_short_12: Q74ENNE7PTDW · pith_short_16: Q74ENNE7PTDWUT5R · pith_short_8: Q74ENNE7

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/Q74ENNE7PTDWUT5RXDZFMREY34 \
  | 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: 87f846b49f7cc76a4fb1b8f2564498df3ca64664345749b588504ee8938338aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcbff96b17b5efc3ff647b3b6d8c239e0d28130e151ff61ccda3b8f15d6bf7c9",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-04-30T22:20:16Z",
    "title_canon_sha256": "a121d81023cf4b01e6ab1350166a8536cb47b08f9920fc0699b1132338b5c2ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.0123",
    "kind": "arxiv",
    "version": 1
  }
}