Pith Number

pith:QEVPSXF2

pith:2009:QEVPSXF2FTZCY4ZAEDNTUXN4SN

not attested not anchored not stored refs pending

A delta Scuti star in the post-MS contraction phase: 44 Tauri

A. A. Pamyatnykh, M. Breger, P. Lenz, T. Zdravkov

arxiv:0911.4339 v1 · 2009-11-23 · 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{QEVPSXF2FTZCY4ZAEDNTUXN4SN}

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	2026-05-18T02:10:37.590733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

812af95cba2cf22c732020db3a5dbc936dc309fbf9503f7cb100a2f8d31f162d

Aliases

arxiv: 0911.4339 · arxiv_version: 0911.4339v1 · doi: 10.48550/arxiv.0911.4339 · pith_short_12: QEVPSXF2FTZC · pith_short_16: QEVPSXF2FTZCY4ZA · pith_short_8: QEVPSXF2

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/QEVPSXF2FTZCY4ZAEDNTUXN4SN \
  | 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: 812af95cba2cf22c732020db3a5dbc936dc309fbf9503f7cb100a2f8d31f162d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "634e92bf1deb28a7332adbe00c03c8e948c6af97fa03e5951f25e7b8bd3ebd17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-23T08:52:26Z",
    "title_canon_sha256": "3517fd8973bb20ce9bc41e38f8c5f8243023c5a5ab5a6042ac4c690cc238e3b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4339",
    "kind": "arxiv",
    "version": 1
  }
}