Pith Number

pith:VGYA7QYD

pith:2010:VGYA7QYDMU3T3ZJ5VGSJF27DMU

not attested not anchored not stored refs pending

Four-colour photometry of EY Dra: a study of an ultra-fast rotating active dM1-2e star

\'A. S\'odor, B. Belucz, I. D\'ek\'any, I. Nagy, J. Jurcsik, K. Ol\'ah, K. Posztob\'anyi, K. Vida, M. V\'aradi, Zs. Hurta, Zs. K\H{o}v\'ari

arxiv:1001.1852 v2 · 2010-01-12 · astro-ph.SR

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

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	2026-05-18T03:31:41.994833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9b00fc30365373de53da9a492ebe365160ba5797c1be6bfe38847468f7cca75

Aliases

arxiv: 1001.1852 · arxiv_version: 1001.1852v2 · doi: 10.48550/arxiv.1001.1852 · pith_short_12: VGYA7QYDMU3T · pith_short_16: VGYA7QYDMU3T3ZJ5 · pith_short_8: VGYA7QYD

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/VGYA7QYDMU3T3ZJ5VGSJF27DMU \
  | 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: a9b00fc30365373de53da9a492ebe365160ba5797c1be6bfe38847468f7cca75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddc5891522c9cefe5a8c768dff4fa4042751190474db8277df378fe9b9357ca8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-01-12T11:30:13Z",
    "title_canon_sha256": "5796c8252f081126714310818eb72817ea0d79d4da211c6d2936ee62d484e8a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1852",
    "kind": "arxiv",
    "version": 2
  }
}