Pith Number

pith:B2IHFWLD

pith:2000:B2IHFWLDJTFNT4UGC3OTGJ47OV

not attested not anchored not stored refs pending

Ultra High Energy Cosmic Rays: The theoretical challenge

A. V. Olinto

arxiv:astro-ph/0002006 v1 · 2000-02-01 · 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{B2IHFWLDJTFNT4UGC3OTGJ47OV}

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	2026-05-18T04:34:17.673836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e9072d9634ccad9f28616dd33279f756578c6d4d2c24e99690a108db6a2a4ae

Aliases

arxiv: astro-ph/0002006 · arxiv_version: astro-ph/0002006v1 · doi: 10.48550/arxiv.astro-ph/0002006 · pith_short_12: B2IHFWLDJTFN · pith_short_16: B2IHFWLDJTFNT4UG · pith_short_8: B2IHFWLD

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/B2IHFWLDJTFNT4UGC3OTGJ47OV \
  | 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: 0e9072d9634ccad9f28616dd33279f756578c6d4d2c24e99690a108db6a2a4ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "073b8957f93a41e9d4219853553b88662d499b792afece637bf9ec2b547eb326",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-01T01:17:52Z",
    "title_canon_sha256": "730239bcff4e81b6a5de48972b3c3e2663ddebc77314112813783c7793849d96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002006",
    "kind": "arxiv",
    "version": 1
  }
}