Pith Number

pith:RQDRDX56

pith:2025:RQDRDX562GBD36LGZFZUTWVJSE

not attested not anchored not stored refs pending

The Infinity Galaxy: a Candidate Direct-Collapse Supermassive Black Hole Between Two Massive, Ringed Nuclei

Gabriel Brammer, Imad Pasha, Josephine F. W. Baggen, Michael A. Keim, Pieter van Dokkum, Priyamvada Natarajan

arxiv:2506.15618 v1 · 2025-06-18 · 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{RQDRDX562GBD36LGZFZUTWVJSE}

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.

Cited by

1 paper in Pith

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-07-05T11:23:47.155516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c0711dfbed1823df966c97349daa99133cd7fe0049ce26bd5d8a3989bd923b1

Aliases

arxiv: 2506.15618 · arxiv_version: 2506.15618v1 · doi: 10.48550/arxiv.2506.15618 · pith_short_12: RQDRDX562GBD · pith_short_16: RQDRDX562GBD36LG · pith_short_8: RQDRDX56

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/RQDRDX562GBD36LGZFZUTWVJSE \
  | 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: 8c0711dfbed1823df966c97349daa99133cd7fe0049ce26bd5d8a3989bd923b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6c0de06d4ea7d4c343047113f439dfcdf1c41251bc44990f76977c9845c8806",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-06-18T16:51:15Z",
    "title_canon_sha256": "0a7db64748f5a95dc27436bdf4a91de693e73fe81aed57cbc715da7ab9c09e7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.15618",
    "kind": "arxiv",
    "version": 1
  }
}