Pith Number

pith:WH6EZ23E

pith:2009:WH6EZ23EQACIMDCV5AQRQTIMJK

not attested not anchored not stored refs pending

Cross Calibration of Imaging Air Cherenkov Telescopes with Fermi

D. Horns, H.-S. Zechlin, M. Meyer

arxiv:0912.3754 v2 · 2009-12-18 · astro-ph.IM · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WH6EZ23EQACIMDCV5AQRQTIMJK}

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	2026-05-18T04:41:45.732179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1fc4ceb648004860c55e821184d0c4a896a616a62191c6345e0c2a46f886f75

Aliases

arxiv: 0912.3754 · arxiv_version: 0912.3754v2 · doi: 10.48550/arxiv.0912.3754 · pith_short_12: WH6EZ23EQACI · pith_short_16: WH6EZ23EQACIMDCV · pith_short_8: WH6EZ23E

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/WH6EZ23EQACIMDCV5AQRQTIMJK \
  | 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: b1fc4ceb648004860c55e821184d0c4a896a616a62191c6345e0c2a46f886f75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb2b058521ca02670d65f966250ddcc21375402c94e38cc267561355ba2e621e",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-12-18T17:55:51Z",
    "title_canon_sha256": "0342cdae0a1ae0ddcce36f9b79a9f9c5f1ac7d520ea3146ab123139f8163459e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3754",
    "kind": "arxiv",
    "version": 2
  }
}