Pith Number

pith:WWWRCZ57

pith:2012:WWWRCZ57DJRYU4RFM73EXSVQCJ

not attested not anchored not stored refs pending

How many Ultra High Energy Cosmic Rays could we expect from Centaurus A?

A. Marinelli, M. M. Gonzalez, M. Perez, Nissim Fraija

arxiv:1204.4500 v1 · 2012-04-19 · 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{WWWRCZ57DJRYU4RFM73EXSVQCJ}

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	2026-05-18T01:57:48.381999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5ad1167bf1a638a722567f64bcab01272d73df2247594fa002ae078f7faa47a

Aliases

arxiv: 1204.4500 · arxiv_version: 1204.4500v1 · doi: 10.48550/arxiv.1204.4500 · pith_short_12: WWWRCZ57DJRY · pith_short_16: WWWRCZ57DJRYU4RF · pith_short_8: WWWRCZ57

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/WWWRCZ57DJRYU4RFM73EXSVQCJ \
  | 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: b5ad1167bf1a638a722567f64bcab01272d73df2247594fa002ae078f7faa47a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1836ea68075023dd5a61c5f5487922d9c4254ac3cb94e28d78f29a5eb7d52dd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-04-19T23:41:11Z",
    "title_canon_sha256": "c08a33fe9df7c517499be6c18886ee8384044ac52abcebe42781cfb5a6298a48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4500",
    "kind": "arxiv",
    "version": 1
  }
}