Pith Number

pith:RW4VFPT2

pith:1999:RW4VFPT2NASPH5KAOYW4VVUM74

not attested not anchored not stored refs pending

Predicting Proton-Air Cross Sections at sqrt s ~30 TeV, using Accelerator and Cosmic Ray Data

F. Halzen, M.M. Block, T. Stanev

arxiv:hep-ph/9908222 v2 · 1999-08-02 · hep-ph · 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{RW4VFPT2NASPH5KAOYW4VVUM74}

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	2026-05-18T04:22:11.818718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8db952be7a6824f3f540762dcad68cff1b69d70dbf0af272b5dab14ca83bab07

Aliases

arxiv: hep-ph/9908222 · arxiv_version: hep-ph/9908222v2 · doi: 10.48550/arxiv.hep-ph/9908222 · pith_short_12: RW4VFPT2NASP · pith_short_16: RW4VFPT2NASPH5KA · pith_short_8: RW4VFPT2

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/RW4VFPT2NASPH5KAOYW4VVUM74 \
  | 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: 8db952be7a6824f3f540762dcad68cff1b69d70dbf0af272b5dab14ca83bab07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "185f23f0e22faf029dd8a704aed4d677b825aa59068a5898b315c33472997fbd",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "1999-08-02T20:58:40Z",
    "title_canon_sha256": "82ddc7d7cc2ad8251be8f2c133886a490b84681a0e655d5b8c75f7a2a362956b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/9908222",
    "kind": "arxiv",
    "version": 2
  }
}