Pith Number

pith:E2IK4OBO

pith:2008:E2IK4OBOM4SBZE6RPRE2IIBJEB

not attested not anchored not stored refs pending

Suzaku Observations of M82 X-1 : Detection of a Curved Hard X-ray Spectrum

Aya Kubota, Hironori Matsumoto, Kazuo Makishima, Poshak Gandhi, Ryohei Miyawaki, Shinya Yamada, Takeshi Tsuru, Tsunefumi Mizuno

arxiv:0809.3339 v2 · 2008-09-19 · 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{E2IK4OBOM4SBZE6RPRE2IIBJEB}

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	2026-05-18T02:15:34.246510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2690ae382e67241c93d17c49a42029205d06d81a6711238210f36f66e4705172

Aliases

arxiv: 0809.3339 · arxiv_version: 0809.3339v2 · doi: 10.48550/arxiv.0809.3339 · pith_short_12: E2IK4OBOM4SB · pith_short_16: E2IK4OBOM4SBZE6R · pith_short_8: E2IK4OBO

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/E2IK4OBOM4SBZE6RPRE2IIBJEB \
  | 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: 2690ae382e67241c93d17c49a42029205d06d81a6711238210f36f66e4705172

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "069b5b83ee92fe4d54b80d56d5f7fa067d90b09de16988518f7ac16046311ff6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-19T10:32:03Z",
    "title_canon_sha256": "f492da562bc2271e6e6f4d18e4a5be08500f38f32ccac9fb038485b1efce98de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3339",
    "kind": "arxiv",
    "version": 2
  }
}