Pith Number

pith:FPTPENDF

pith:2018:FPTPENDFTXRR3ZGNO2ENNBBLQS

not attested not anchored not stored refs pending

Discovery of an Ionizing Radiation Field in the Universe

James Overduin, Jayant Murthy, Richard Conn Henry

arxiv:1805.09658 v1 · 2018-05-24 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FPTPENDFTXRR3ZGNO2ENNBBLQS}

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	2026-05-18T00:15:03.239589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2be6f234659de31de4cd7688d6842b849face81152fdc5bcbcd0bef68ac6e2f2

Aliases

arxiv: 1805.09658 · arxiv_version: 1805.09658v1 · doi: 10.48550/arxiv.1805.09658 · pith_short_12: FPTPENDFTXRR · pith_short_16: FPTPENDFTXRR3ZGN · pith_short_8: FPTPENDF

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/FPTPENDFTXRR3ZGNO2ENNBBLQS \
  | 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: 2be6f234659de31de4cd7688d6842b849face81152fdc5bcbcd0bef68ac6e2f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58a81ac77098a9fc09882f0a3a864ae8fee6cb1f4ebf53037366db84e2f9ed72",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-24T13:34:44Z",
    "title_canon_sha256": "a898e5630381b89e658eafcfd9b6fe8c5c49625c77c863947f7cacc356afa468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09658",
    "kind": "arxiv",
    "version": 1
  }
}