Pith Number

pith:QPTLY3TY

pith:2004:QPTLY3TYR24NGAXNPOXDJ6VATE

not attested not anchored not stored refs pending

GZK horizon and magnetic fields

Etienne Parizot

arxiv:astro-ph/0409191 v1 · 2004-09-08 · 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{QPTLY3TYR24NGAXNPOXDJ6VATE}

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	2026-07-04T16:44:39.465401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83e6bc6e788eb8d302ed7bae34faa0992c64bbcd5ea7f7d6c79ad513db76a277

Aliases

arxiv: astro-ph/0409191 · arxiv_version: astro-ph/0409191v1 · doi: 10.48550/arxiv.astro-ph/0409191 · pith_short_12: QPTLY3TYR24N · pith_short_16: QPTLY3TYR24NGAXN · pith_short_8: QPTLY3TY

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/QPTLY3TYR24NGAXNPOXDJ6VATE \
  | 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: 83e6bc6e788eb8d302ed7bae34faa0992c64bbcd5ea7f7d6c79ad513db76a277

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e4308571de150841c37689579de696346043ab657b07e3559332b7e58814305",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-08T13:55:56Z",
    "title_canon_sha256": "f5576e122750927776819a2c1ed7d11b44c5437162ac2627dcc3a54b645423bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409191",
    "kind": "arxiv",
    "version": 1
  }
}