Pith Number

pith:54IK2GB7

pith:2013:54IK2GB7ZB6JFIAPRKTQCMKFFA

not attested not anchored not stored refs pending

Expectation Maximization for Hard X-ray Count Modulation Profiles

Anna Maria Massone, Federico Benvenuto, Michele Piana, Richard Schwartz

arxiv:1302.4857 v1 · 2013-02-20 · astro-ph.IM · astro-ph.SR · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{54IK2GB7ZB6JFIAPRKTQCMKFFA}

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	2026-05-18T01:51:35.034035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef10ad183fc87c92a00f8aa7013145282dae0efda4e4771bab46a86107ae503f

Aliases

arxiv: 1302.4857 · arxiv_version: 1302.4857v1 · doi: 10.48550/arxiv.1302.4857 · pith_short_12: 54IK2GB7ZB6J · pith_short_16: 54IK2GB7ZB6JFIAP · pith_short_8: 54IK2GB7

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/54IK2GB7ZB6JFIAPRKTQCMKFFA \
  | 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: ef10ad183fc87c92a00f8aa7013145282dae0efda4e4771bab46a86107ae503f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d00e761e5806d7c53812c245b0b792a28512dddee284b023e2ec436a02011d",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-02-20T10:04:24Z",
    "title_canon_sha256": "e3c5e1efe7caab8a4a6484ee193b6a01a2dfff54866321a48fd65bc838b52fe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4857",
    "kind": "arxiv",
    "version": 1
  }
}