Pith Number

pith:AHNF56OO

pith:2012:AHNF56OOHDC2TK7ZIDRUGLD3YU

not attested not anchored not stored refs pending

Magnetic Activity Cycles in the Exoplanet Host Star epsilon Eridani

A.P. Buccino, B.P. Brown, D.R. Soderblom, J.C. Hall, P.J.D. Mauas, R. Petrucci, S. Basu, S. Mathur, T.J. Henry, T.S. Metcalfe

arxiv:1212.4425 v1 · 2012-12-18 · astro-ph.SR · astro-ph.EP

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	2026-05-18T03:36:36.091080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01da5ef9ce38c5a9abf940e3432c7bc51e9a161b33bff8f056465fb97e0a9c9a

Aliases

arxiv: 1212.4425 · arxiv_version: 1212.4425v1 · doi: 10.48550/arxiv.1212.4425 · pith_short_12: AHNF56OOHDC2 · pith_short_16: AHNF56OOHDC2TK7Z · pith_short_8: AHNF56OO

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/AHNF56OOHDC2TK7ZIDRUGLD3YU \
  | 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: 01da5ef9ce38c5a9abf940e3432c7bc51e9a161b33bff8f056465fb97e0a9c9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31409b0681637a0c4a751f0f73dbfb261e9cfd36c41b0d88757a745a65a10d72",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-18T16:55:57Z",
    "title_canon_sha256": "0bdf612d515623967e5b90b51fb49c5115f03a12a3d02eeff2f027e523fa1933"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4425",
    "kind": "arxiv",
    "version": 1
  }
}