Pith Number

pith:QPAA67M2

pith:2001:QPAA67M2IIPNXHOZJMSFV2XEMI

not attested not anchored not stored refs pending

Mechanisms and sites of ultra high energy cosmic ray origin

Jagiellonian University), M. Ostrowski (Astronomical Obs.

arxiv:astro-ph/0101053 v2 · 2001-01-04 · 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{QPAA67M2IIPNXHOZJMSFV2XEMI}

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	2026-05-18T04:35:35.997776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c00f7d9a421edb9dd94b245aeae462262a3c8cb5cffa291159ec3755639f0e

Aliases

arxiv: astro-ph/0101053 · arxiv_version: astro-ph/0101053v2 · doi: 10.48550/arxiv.astro-ph/0101053 · pith_short_12: QPAA67M2IIPN · pith_short_16: QPAA67M2IIPNXHOZ · pith_short_8: QPAA67M2

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/QPAA67M2IIPNXHOZJMSFV2XEMI \
  | 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: 83c00f7d9a421edb9dd94b245aeae462262a3c8cb5cffa291159ec3755639f0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f84884ef658e1281976d3bf932a0f6f63bb47f8477b9085c4fe9350bb8b8f4e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-04T09:56:23Z",
    "title_canon_sha256": "831895836ad6e4a7c618e7d160cb8a5318113459ad34785ef712cdda25c574a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101053",
    "kind": "arxiv",
    "version": 2
  }
}