Pith Number

pith:EY5TRHTT

pith:2009:EY5TRHTTAI5ILQTPUAMAOY3OI5

not attested not anchored not stored refs pending

Mapping the most energetic cosmic rays

A. M. Hillas

arxiv:0906.0280 v1 · 2009-06-01 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EY5TRHTTAI5ILQTPUAMAOY3OI5}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:13:30.110017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

263b389e73023a85c26fa01807636e474451f39cdd57147d8daad940ece57f2d

Aliases

arxiv: 0906.0280 · arxiv_version: 0906.0280v1 · doi: 10.48550/arxiv.0906.0280 · pith_short_12: EY5TRHTTAI5I · pith_short_16: EY5TRHTTAI5ILQTP · pith_short_8: EY5TRHTT

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/EY5TRHTTAI5ILQTPUAMAOY3OI5 \
  | 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: 263b389e73023a85c26fa01807636e474451f39cdd57147d8daad940ece57f2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfe5f5424e9dc14311d821370f7f43e694e66f07fad1e865789aaa165e889cb2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-06-01T16:49:33Z",
    "title_canon_sha256": "10a205ebda47bcf89b582fb8a09b335c03bfc4c0528d2fe4e971896e7984afe9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0280",
    "kind": "arxiv",
    "version": 1
  }
}