Pith Number

pith:2CDXI626

pith:1993:2CDXI626WAFZ55JAQKXW3KV4MJ

not attested not anchored not stored refs pending

Extragalactic ultra high energy cosmic rays, I. Contribution from hot spots in FR-II galaxies

Bonn, Germany), Joerg P. Rachen, Peter L. Biermann (Max-Planck-Institut fuer Radioastronomie

arxiv:astro-ph/9301010 v2 · 1993-01-21 · 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{2CDXI626WAFZ55JAQKXW3KV4MJ}

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.

Cited by

1 paper in Pith

POEMMA (Probe of Extreme Multi-Messenger Astrophysics) design

Receipt and verification

First computed	2026-05-18T04:21:41.335565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d087747b5eb00b9ef52082af6daabc627bcfbb2385df3d99056f6396fe00eee0

Aliases

arxiv: astro-ph/9301010 · arxiv_version: astro-ph/9301010v2 · doi: 10.48550/arxiv.astro-ph/9301010 · pith_short_12: 2CDXI626WAFZ · pith_short_16: 2CDXI626WAFZ55JA · pith_short_8: 2CDXI626

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/2CDXI626WAFZ55JAQKXW3KV4MJ \
  | 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: d087747b5eb00b9ef52082af6daabc627bcfbb2385df3d99056f6396fe00eee0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fbefc1dd9cfb30b5a7e5a512b38f814e1c36f551313b70279146c64b5704627",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-01-21T16:27:47Z",
    "title_canon_sha256": "5fe731db47928d608f92b0b534ac4d8965bebef47a63ebbe5fee3d59dc0190ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9301010",
    "kind": "arxiv",
    "version": 2
  }
}