Pith Number

pith:E6HUDIVJ

pith:2007:E6HUDIVJDVIAEOUH5T5ZGJTVXQ

not attested not anchored not stored refs pending

Search for ultra-high energy photons using air showers

Markus Risse, Piotr Homola

arxiv:astro-ph/0702632 v1 · 2007-02-23 · 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{E6HUDIVJDVIAEOUH5T5ZGJTVXQ}

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	2026-07-04T15:31:25.056387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

278f41a2a91d50023a87ecfb932675bc3b49529c15479968451d600af795a21d

Aliases

arxiv: astro-ph/0702632 · arxiv_version: astro-ph/0702632v1 · doi: 10.48550/arxiv.astro-ph/0702632 · pith_short_12: E6HUDIVJDVIA · pith_short_16: E6HUDIVJDVIAEOUH · pith_short_8: E6HUDIVJ

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/E6HUDIVJDVIAEOUH5T5ZGJTVXQ \
  | 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: 278f41a2a91d50023a87ecfb932675bc3b49529c15479968451d600af795a21d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc1dd7a5bfd7bfaad9fbb4f21c857170cf16f276cc70397b4c5075d2e90bc08c",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-23T15:53:30Z",
    "title_canon_sha256": "fc85ae77ae091831ffb49eebad373d92ae8be49b9e2e56878d3e4ff12f20c3d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702632",
    "kind": "arxiv",
    "version": 1
  }
}