Pith Number

pith:SPC7WAA7

pith:2008:SPC7WAA7O75AQCNMOHUGVGQFP5

not attested not anchored not stored refs pending

Radio Detection of Ultra-High Energy Cosmic Rays

(2) ASTRON, 2) (for the LOPES collaboration) ((1) Radboud University, Dwingeloo), Heino Falcke (1, Nijmegen

arxiv:0804.0548 v1 · 2008-04-03 · 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{SPC7WAA7O75AQCNMOHUGVGQFP5}

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	2026-07-04T23:56:05.318729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93c5fb001f77fa0809ac71e86a9a057f5d22115739bcccef12530a1e039b0680

Aliases

arxiv: 0804.0548 · arxiv_version: 0804.0548v1 · doi: 10.48550/arxiv.0804.0548 · pith_short_12: SPC7WAA7O75A · pith_short_16: SPC7WAA7O75AQCNM · pith_short_8: SPC7WAA7

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/SPC7WAA7O75AQCNMOHUGVGQFP5 \
  | 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: 93c5fb001f77fa0809ac71e86a9a057f5d22115739bcccef12530a1e039b0680

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29377414be317c7ee398cf2f23fa6fff432bcd4640af5821d97cf3c7eb53ff32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-03T13:10:51Z",
    "title_canon_sha256": "c309dfeb038d6fd4cef0dd3b3e8926fb1deb7e911e26ad7c823e0b20dfb13f90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.0548",
    "kind": "arxiv",
    "version": 1
  }
}