Pith Number

pith:WQOVHJXY

pith:1999:WQOVHJXY4HGXW2N6S4S2RQAA3O

not attested not anchored not stored refs pending

Ultra High Energy Cosmic Ray Accelerators

Angela V. Olinto

arxiv:astro-ph/9911154 v1 · 1999-11-09 · 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{WQOVHJXY4HGXW2N6S4S2RQAA3O}

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	2026-07-04T14:17:18.201786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b41d53a6f8e1cd7b69be9725a8c000dbb50d0b3fbe8ba4d47479607ea9e92731

Aliases

arxiv: astro-ph/9911154 · arxiv_version: astro-ph/9911154v1 · doi: 10.48550/arxiv.astro-ph/9911154 · pith_short_12: WQOVHJXY4HGX · pith_short_16: WQOVHJXY4HGXW2N6 · pith_short_8: WQOVHJXY

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/WQOVHJXY4HGXW2N6S4S2RQAA3O \
  | 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: b41d53a6f8e1cd7b69be9725a8c000dbb50d0b3fbe8ba4d47479607ea9e92731

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3089ffe9e1ca433bab38a4d2a0d84cd0c57aa6773ac9d0c21546e2d7e217e297",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-09T20:58:48Z",
    "title_canon_sha256": "facc8032a9b23fc34bfc07c877ae10c1a42ccd8ff45110f256bc29dc8b6a660b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911154",
    "kind": "arxiv",
    "version": 1
  }
}