Pith Number

pith:5HVTRAQQ

pith:2011:5HVTRAQQFA7B5GMMJGJXKHN5HU

not attested not anchored not stored refs pending

Centaurus A: the one extragalactic source of cosmic rays with energies above the knee

Peter L. Biermann, Vitor de Souza

arxiv:1106.0625 v2 · 2011-06-03 · 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{5HVTRAQQFA7B5GMMJGJXKHN5HU}

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	2026-05-18T02:01:43.928853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9eb388210283e1e998c4993751dbd3d0f5f92ba9b0410d7e0ca75840613aabc

Aliases

arxiv: 1106.0625 · arxiv_version: 1106.0625v2 · doi: 10.48550/arxiv.1106.0625 · pith_short_12: 5HVTRAQQFA7B · pith_short_16: 5HVTRAQQFA7B5GMM · pith_short_8: 5HVTRAQQ

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/5HVTRAQQFA7B5GMMJGJXKHN5HU \
  | 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: e9eb388210283e1e998c4993751dbd3d0f5f92ba9b0410d7e0ca75840613aabc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8dfa240b7538e4a5aca1c4ce656c151d828f905bcc1ac39ef433083810d1190",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-06-03T12:52:45Z",
    "title_canon_sha256": "d0fe4fbd986ab3888c40405b169e35ac25a4a2e9a0e3889fd525ce09d99f8d84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0625",
    "kind": "arxiv",
    "version": 2
  }
}