Pith Number

pith:NLA25K5Z

pith:2025:NLA25K5ZTFSQCYMFFTTRGWMISG

not attested not anchored not stored refs pending

Aligned hierarchical black hole mergers in active-galactic-nuclei disks revealed by GWTC-4

Shao-Peng Tang, Yin-Jie Li, Yi-Zhong Fan, Yuan-Zhu Wang

arxiv:2509.23897 v2 · 2025-09-28 · astro-ph.HE · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NLA25K5ZTFSQCYMFFTTRGWMISG}

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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.

Cited by

6 papers in Pith

A new group of low-spin $50-70M_\odot$ Black Holes and the high pair-instability mass cutoff

Population Properties of Binary Black Holes with Eccentricity

Secondary-Mass Features improve Spectral-Siren $H_0$ Constraints

Post-Newtonian inspiral waveform model for eccentric precessing binaries with higher-order modes and matter effects

Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset

Receipt and verification

First computed	2026-06-09T01:05:09.589244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ac1aeabb999650161852ce713598891b728d96f53be51addf9dae74a6f6a1a5

Aliases

arxiv: 2509.23897 · arxiv_version: 2509.23897v2 · doi: 10.48550/arxiv.2509.23897 · pith_short_12: NLA25K5ZTFSQ · pith_short_16: NLA25K5ZTFSQCYMF · pith_short_8: NLA25K5Z

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/NLA25K5ZTFSQCYMFFTTRGWMISG \
  | 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: 6ac1aeabb999650161852ce713598891b728d96f53be51addf9dae74a6f6a1a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8dec7550b44f19a1973ed7c9c72b474bf2c677e625fbbdcac2c624dbd900ab95",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-09-28T14:05:54Z",
    "title_canon_sha256": "c8ba1f8785b6585e76c382378333aa5f2094201cd889af8e180a237192dfc433"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.23897",
    "kind": "arxiv",
    "version": 2
  }
}