Pith Number

pith:AD56WAOF

pith:2008:AD56WAOFXGSWHK7P6Z56WQBUVG

not attested not anchored not stored refs pending

The X-ray cycle in the solar-type star HD 81809

F. Favata, G. Micela, J. Hall, J.H.M.M. Schmitt, S. Orlando, S. Sciortino

arxiv:0806.2279 v1 · 2008-06-13 · astro-ph

Open paper page JSON 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

Receipt and verification

First computed	2026-05-18T02:15:51.552881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00fbeb01c5b9a563abeff67beb4034a99ce185e6663ac7f8bff80a12d793ecca

Aliases

arxiv: 0806.2279 · arxiv_version: 0806.2279v1 · doi: 10.48550/arxiv.0806.2279 · pith_short_12: AD56WAOFXGSW · pith_short_16: AD56WAOFXGSWHK7P · pith_short_8: AD56WAOF

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/AD56WAOFXGSWHK7P6Z56WQBUVG \
  | 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: 00fbeb01c5b9a563abeff67beb4034a99ce185e6663ac7f8bff80a12d793ecca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fa719e4102f1f6c3a2295942fb9dbfcb7f4c0d99e18a27b1c7a29bd3d109b35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-06-13T16:25:12Z",
    "title_canon_sha256": "ec697c737a78e6e86a84ec98e531a9ba0f8a8acc4fa8b80dbb1d1948efce4418"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.2279",
    "kind": "arxiv",
    "version": 1
  }
}