Pith Number

pith:FYIJ7SIP

pith:2009:FYIJ7SIPASSM4BSD4PUWGSGP5Y

not attested not anchored not stored refs pending

Spectral variability and reverberation time delays in the Suzaku X-ray spectrum of NGC 4051

A. Lobban, D.M. Crenshaw, J.N. Reeves, L. Miller, S.B. Kraemer, T.J. Turner

arxiv:0912.0456 v2 · 2009-12-02 · astro-ph.HE · 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{FYIJ7SIPASSM4BSD4PUWGSGP5Y}

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	2026-05-18T02:34:02.595252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e109fc90f04a4ce0643e3e96348cfee01cd89135e5b33bc567f0c6888765055

Aliases

arxiv: 0912.0456 · arxiv_version: 0912.0456v2 · doi: 10.48550/arxiv.0912.0456 · pith_short_12: FYIJ7SIPASSM · pith_short_16: FYIJ7SIPASSM4BSD · pith_short_8: FYIJ7SIP

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/FYIJ7SIPASSM4BSD4PUWGSGP5Y \
  | 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: 2e109fc90f04a4ce0643e3e96348cfee01cd89135e5b33bc567f0c6888765055

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a62acb1aa16fe35b54fda103d5185aeddb42327b86eb3833c98175ad2eebe7",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-02T16:47:31Z",
    "title_canon_sha256": "351da32e8f62c17f1666493a9a146e1bbb8e78db802a96bbaeffa73276bc135f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0456",
    "kind": "arxiv",
    "version": 2
  }
}