Pith Number

pith:YSFD7LUR

pith:2019:YSFD7LURNGYAW23MOR6Y4EKSAN

not attested not anchored not stored refs pending

A revisit to the enigmatic variable star 21 Comae

Anna Guetl-Wallner, Ernst Paunzen, Ewa Niemczura, Gerald Handler, Jaymie Matthews, Klaus Bernhard, Martin Vanko, Miroslav Fedurco, Przemyslaw Walczak, Stefan Huemmerich, Stefan Wallner, Theodor Pribulla, Thomas Kallinger, Tomasz Rozanski, Werner Weiss

arxiv:1904.04809 v1 · 2019-04-09 · 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{YSFD7LURNGYAW23MOR6Y4EKSAN}

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	2026-05-17T23:48:58.150551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c48a3fae9169b00b6b6c747d8e11520351d01690647ffc36ba6fe36a813b428e

Aliases

arxiv: 1904.04809 · arxiv_version: 1904.04809v1 · doi: 10.48550/arxiv.1904.04809 · pith_short_12: YSFD7LURNGYA · pith_short_16: YSFD7LURNGYAW23M · pith_short_8: YSFD7LUR

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/YSFD7LURNGYAW23MOR6Y4EKSAN \
  | 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: c48a3fae9169b00b6b6c747d8e11520351d01690647ffc36ba6fe36a813b428e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22263dc7e932224a34e3f2defe1c54beebdf2738ad798de8428c2b9d3bee245c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-09T17:50:12Z",
    "title_canon_sha256": "b5b7f2e33bfc6458df8c44422df4a96badff7fc04b65ac0c9b96b26394cf5d55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04809",
    "kind": "arxiv",
    "version": 1
  }
}