Pith Number

pith:T2YLQSXW

pith:2003:T2YLQSXW7IRGWHJEI7I2CL2HCV

not attested not anchored not stored refs pending

Observability of neutron events above the Greisen-Zatsepin-Kuzmin cut-off due to violation of Lorentz invariance

Chennai), Nayantara Gupta (IMSc

arxiv:astro-ph/0309421 v2 · 2003-09-16 · astro-ph · hep-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{T2YLQSXW7IRGWHJEI7I2CL2HCV}

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	2026-05-18T01:40:38.229728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9eb0b84af6fa226b1d2447d1a12f4715449754a5edb3d49b9895abe75d9b6d8d

Aliases

arxiv: astro-ph/0309421 · arxiv_version: astro-ph/0309421v2 · doi: 10.48550/arxiv.astro-ph/0309421 · pith_short_12: T2YLQSXW7IRG · pith_short_16: T2YLQSXW7IRGWHJE · pith_short_8: T2YLQSXW

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/T2YLQSXW7IRGWHJEI7I2CL2HCV \
  | 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: 9eb0b84af6fa226b1d2447d1a12f4715449754a5edb3d49b9895abe75d9b6d8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e494c275709e8317727a035aee6e91cfef94c3a2d0e85c6cd6039af94334b9bc",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-16T08:18:38Z",
    "title_canon_sha256": "5b9cf3b5de3968ad751cc233e3a1d719d1a4e859e1f8697c5f8b1e592930798d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309421",
    "kind": "arxiv",
    "version": 2
  }
}