Pith Number

pith:4QXYR23W

pith:2009:4QXYR23WLNKRVTC727RAI6ACYK

not attested not anchored not stored refs pending

Suzaku and Multi-wavelength Observations of OJ 287 during the Periodic Optical Outburst in 2007

Akira Arai, Hiromi Seta, Koichiro Nakanishi, Kotaro Kohno, MAGIC collaboration, Mahito Sasada, Makoto S. Tashiro, Makoto Uemura, Masayuki Fukuhara, Naoki Isobe, Tomoka Tosaki, Yoshito Shimajiri, Yuichi Yaji

arxiv:0906.0234 v1 · 2009-06-01 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QXYR23WLNKRVTC727RAI6ACYK}

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	2026-05-18T02:13:30.194588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e42f88eb765b551acc5fd7e2047802c29f101cde19606735d378a170516a4865

Aliases

arxiv: 0906.0234 · arxiv_version: 0906.0234v1 · doi: 10.48550/arxiv.0906.0234 · pith_short_12: 4QXYR23WLNKR · pith_short_16: 4QXYR23WLNKRVTC7 · pith_short_8: 4QXYR23W

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/4QXYR23WLNKRVTC727RAI6ACYK \
  | 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: e42f88eb765b551acc5fd7e2047802c29f101cde19606735d378a170516a4865

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a3a16cff16077bd3537a0e093bb70641b00d92139b99cc67c75a372d484bcce",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-01T08:29:05Z",
    "title_canon_sha256": "4b63b5328e40ecdf191f001c05fd067e651fb1047d33c8d953ce6f314bfa239c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0234",
    "kind": "arxiv",
    "version": 1
  }
}