Pith Number

pith:44VEQCLV

pith:2025:44VEQCLVQLR63ZWUYWWX3M6F2J

not attested not anchored not stored refs pending

A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes -- IV. Ultraviolet spectroscopy

Jessie C. Runnoe, Jules Halpern, Michael Eracleous, Steinn Sigur{\dh}sson, Tamara Bogdanovi\'c

arxiv:2501.10574 v1 · 2025-01-17 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{44VEQCLVQLR63ZWUYWWX3M6F2J}

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	2026-07-05T10:02:30.254784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e72a48097582e3ede6d4c5ad7db3c5d25e16322337251ec03057dc7517fb5204

Aliases

arxiv: 2501.10574 · arxiv_version: 2501.10574v1 · doi: 10.48550/arxiv.2501.10574 · pith_short_12: 44VEQCLVQLR6 · pith_short_16: 44VEQCLVQLR63ZWU · pith_short_8: 44VEQCLV

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/44VEQCLVQLR63ZWUYWWX3M6F2J \
  | 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: e72a48097582e3ede6d4c5ad7db3c5d25e16322337251ec03057dc7517fb5204

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f855845dfd3836d0354f2b514e559daa6c8382a9ae41653897d1790771c0334c",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-01-17T22:03:00Z",
    "title_canon_sha256": "bc4fae9894ec3cfca0efcd8ad4f98fc14d7ffec813af2a1c3614853f961434af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.10574",
    "kind": "arxiv",
    "version": 1
  }
}