Pith Number

pith:HCGR5KWN

pith:2026:HCGR5KWNPT645C4GYBLWHFRXPO

not attested not anchored not stored refs pending

The formation of supermassive black holes from Population III.1 seeds. IV. Self-regulated seeding from supermassive star ionizing feedback

Benjamin Keller, Devesh Nandal, Jasbir Singh, Jonathan C. Tan, Mahsa Sanati, Maya A. Petkova, Pierluigi Monaco, Vieri Cammelli

arxiv:2605.28777 v1 · 2026-05-27 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCGR5KWNPT645C4GYBLWHFRXPO}

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	2026-05-28T02:05:02.829545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075

Aliases

arxiv: 2605.28777 · arxiv_version: 2605.28777v1 · doi: 10.48550/arxiv.2605.28777 · pith_short_12: HCGR5KWNPT64 · pith_short_16: HCGR5KWNPT645C4G · pith_short_8: HCGR5KWN

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/HCGR5KWNPT645C4GYBLWHFRXPO \
  | 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: 388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f97b265875ae0a3f83ee48d9e2ad95ea3612fdd32b11dae21de1aad27dc5a0d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-27T17:37:26Z",
    "title_canon_sha256": "67d6179e5ca4c3e758fd96fe0f75e7fd50bb49fd277d7df0249c2b69d5b85d3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28777",
    "kind": "arxiv",
    "version": 1
  }
}