Pith Number

pith:5WD6KCDL

pith:2002:5WD6KCDL45TGDTYUYMZVTWAE45

not attested not anchored not stored refs pending

The clustering of ultra-high energy cosmic rays and their sources

Francesc Ferrer (Oxford), N. Wyn Evans (Cambridge), Subir Sarkar (Oxford)

arxiv:astro-ph/0212533 v2 · 2002-12-23 · astro-ph · hep-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{5WD6KCDL45TGDTYUYMZVTWAE45}

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	2026-05-18T04:28:38.260023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed87e5086be76661cf14c33359d804e7629c57c858a5481615947691611adaa5

Aliases

arxiv: astro-ph/0212533 · arxiv_version: astro-ph/0212533v2 · doi: 10.48550/arxiv.astro-ph/0212533 · pith_short_12: 5WD6KCDL45TG · pith_short_16: 5WD6KCDL45TGDTYU · pith_short_8: 5WD6KCDL

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/5WD6KCDL45TGDTYUYMZVTWAE45 \
  | 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: ed87e5086be76661cf14c33359d804e7629c57c858a5481615947691611adaa5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "effa71dfcbb72aad421ed73fa17e9a39689fa6b49f873c191f72dd44633f42a8",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-23T23:35:36Z",
    "title_canon_sha256": "5e3a675defb9b69bc122a4d23571c8ce8b460592ef2f5777300a85cd82d6415d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212533",
    "kind": "arxiv",
    "version": 2
  }
}