Pith Number

pith:MKSD2GUU

pith:2026:MKSD2GUUKEWOMXB2NUJPDET63M

not attested not anchored not stored refs pending

Searching for unresolved massive black hole pairs through AGN photometric variability

Fabio Rigamonti, Lorenzo Bertassi, Maria Charisi, Massimo Dotti, Stefano Covino

arxiv:2604.00101 v1 · 2026-03-31 · astro-ph.HE · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MKSD2GUUKEWOMXB2NUJPDET63M}

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	2026-06-09T02:07:25.783268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62a43d1a94512ce65c3a6d12f1927edb32a4ab35fd1364d2e7ec71c56b28b1d9

Aliases

arxiv: 2604.00101 · arxiv_version: 2604.00101v1 · doi: 10.48550/arxiv.2604.00101 · pith_short_12: MKSD2GUUKEWO · pith_short_16: MKSD2GUUKEWOMXB2 · pith_short_8: MKSD2GUU

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/MKSD2GUUKEWOMXB2NUJPDET63M \
  | 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: 62a43d1a94512ce65c3a6d12f1927edb32a4ab35fd1364d2e7ec71c56b28b1d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93833016a9fc07b97faa42c43dfee419455c7e129059bf97f6968dd0e6a686e0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-03-31T18:20:02Z",
    "title_canon_sha256": "377f9d7be5f155e403bcf1c36fae0313ce5fd3ac26a0e33fc52ea4ae639a60ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.00101",
    "kind": "arxiv",
    "version": 1
  }
}