Pith Number

pith:YEDIC7PL

pith:2008:YEDIC7PLZ4FWDT5YSR366DTR56

not attested not anchored not stored refs pending

Cosmic rays studied with a hybrid high school detector array

A. Horneffer, A. Nigl, C.M. de Vos, C. Timmermans, G. Schoonderbeek, H. Falcke, H.J. Pepping, J. Kuijpers, P. Schellart, Y. Koopman

arxiv:0809.2717 v1 · 2008-09-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YEDIC7PLZ4FWDT5YSR366DTR56}

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	2026-07-04T15:14:22.381995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c106817debcf0b61cfb89477ef0e71ef8e1adb7cafac6fffc7cce5e4bcc8ecb2

Aliases

arxiv: 0809.2717 · arxiv_version: 0809.2717v1 · doi: 10.48550/arxiv.0809.2717 · pith_short_12: YEDIC7PLZ4FW · pith_short_16: YEDIC7PLZ4FWDT5Y · pith_short_8: YEDIC7PL

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/YEDIC7PLZ4FWDT5YSR366DTR56 \
  | 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: c106817debcf0b61cfb89477ef0e71ef8e1adb7cafac6fffc7cce5e4bcc8ecb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c86109f2a4da5df70742953535f10b00301f9df17ceee8fcb06a8221c1ff0fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-16T14:46:22Z",
    "title_canon_sha256": "f3f00db0ea06a768e71798e952ee83730f80f05facaa78d6c704ddbaab87c97f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2717",
    "kind": "arxiv",
    "version": 1
  }
}