Pith Number

pith:PTL2WD7Y

pith:2003:PTL2WD7YF7N7KK3AMSER6NW6HJ

not attested not anchored not stored refs pending

Signatures of Ultra-High Energy Cosmic Ray Composition from Propagation of Nuclei in Intergalactic Photon Fields

Keiichi Mase, Masahiro Takeda, Masahiro Teshima, Naoto Sakaki, Tokonatsu Yamamoto

arxiv:astro-ph/0312275 v1 · 2003-12-10 · 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{PTL2WD7YF7N7KK3AMSER6NW6HJ}

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	2026-05-18T04:22:19.707643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cd7ab0ff82fdbf52b6064891f36de3a7d11a9ff2b24a1c5ecfd0220e2beece9

Aliases

arxiv: astro-ph/0312275 · arxiv_version: astro-ph/0312275v1 · doi: 10.48550/arxiv.astro-ph/0312275 · pith_short_12: PTL2WD7YF7N7 · pith_short_16: PTL2WD7YF7N7KK3A · pith_short_8: PTL2WD7Y

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/PTL2WD7YF7N7KK3AMSER6NW6HJ \
  | 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: 7cd7ab0ff82fdbf52b6064891f36de3a7d11a9ff2b24a1c5ecfd0220e2beece9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b19a3f6ccef640f97c8b2b38e2facaa9cdd7eb67615a66a09899eb5794861068",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-12-10T20:03:35Z",
    "title_canon_sha256": "e7600ee1be7b50a280dd0605102699f0c370cc949117ce30ddd909d859325b87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0312275",
    "kind": "arxiv",
    "version": 1
  }
}