Pith Number

pith:EJFIVFPS

pith:2012:EJFIVFPSQTO76UJEE4EGN52YNA

not attested not anchored not stored refs pending

Exoplanets from the Arctic: The First Wide-Field Survey at 80 Degrees North

Aida Ahmadi, Eric Steinbring, Nicholas M. Law, Pegah Salbi, Raymond Carlberg, Richard Murowinski, Suresh Sivanandam, Wai-Hin Wayne Ngan, Wolfgang Kerzendorf

arxiv:1211.1972 v1 · 2012-11-08 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EJFIVFPSQTO76UJEE4EGN52YNA}

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	2026-05-18T01:53:17.784175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

224a8a95f284ddff5124270866f75868128232954016bb4d2b3bb87eebc6ee80

Aliases

arxiv: 1211.1972 · arxiv_version: 1211.1972v1 · doi: 10.48550/arxiv.1211.1972 · pith_short_12: EJFIVFPSQTO7 · pith_short_16: EJFIVFPSQTO76UJE · pith_short_8: EJFIVFPS

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/EJFIVFPSQTO76UJEE4EGN52YNA \
  | 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: 224a8a95f284ddff5124270866f75868128232954016bb4d2b3bb87eebc6ee80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3af41f1c88cbec3eee3cc06e31b1e4a7fe8a1a83a2c1c9819cea78648f6d480b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-11-08T21:00:01Z",
    "title_canon_sha256": "ebbef597909af6b1fd6b113e8f85208855f937881591da9ff41d68f9c9a7a2c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1972",
    "kind": "arxiv",
    "version": 1
  }
}