Pith Number

pith:G7RR7AME

pith:1995:G7RR7AME67DXZVZ7LOL4FOAW3Y

not attested not anchored not stored refs pending

Centaurus A as a source of extragalactic cosmic rays with arrival energies well beyond the GZK cutoff

G. E. Romero, J. A. Combi, L. A. Anchordoqui, S. E. Perez Bergliaffa

arxiv:gr-qc/9511031 v2 · 1995-11-10 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G7RR7AME67DXZVZ7LOL4FOAW3Y}

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	2026-05-18T04:21:31.876541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37e31f8184f7c77cd73f5b97c2b816de30cc718ca300440b2ceee7eb859771b7

Aliases

arxiv: gr-qc/9511031 · arxiv_version: gr-qc/9511031v2 · doi: 10.48550/arxiv.gr-qc/9511031 · pith_short_12: G7RR7AME67DX · pith_short_16: G7RR7AME67DXZVZ7 · pith_short_8: G7RR7AME

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/G7RR7AME67DXZVZ7LOL4FOAW3Y \
  | 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: 37e31f8184f7c77cd73f5b97c2b816de30cc718ca300440b2ceee7eb859771b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b16dd4b84e20f866e9f87540ef75a8f2d4dca0453fbfc3fb5305c6f373a7401",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1995-11-10T00:24:07Z",
    "title_canon_sha256": "2cd42db443a70d0a3ee6be1e78c7aba3a5132aa187db32c31f4ef9ad2e43afca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9511031",
    "kind": "arxiv",
    "version": 2
  }
}