Pith Number

pith:4UG2Y7XA

pith:2026:4UG2Y7XAYZ2BEJYCVKYDEGWJCI

not attested not anchored not stored refs pending

Black Hole Stars Across the Universe: Identifying Central Engine Dominated Little Red Dots at $z\sim1.5-9.5$

Alba Covelo Paz, Alberto Torralba, Andrea Weibel, Anna de Graaff, Callum Witten, Christian Kragh Jespersen, Christina C. Williams, David J. Setton, Gabriel Brammer, Jenny E. Greene, Jorryt Matthee, Mengyuan Xiao, Michael V. Maseda, Pascal A. Oesch, Raphael E. Hviding, Rohan P. Naidu, Wendy Q. Sun, Zhaoran Liu, Zhiyuan Ji

arxiv:2606.17271 v1 · 2026-06-15 · 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{4UG2Y7XAYZ2BEJYCVKYDEGWJCI}

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	2026-06-19T16:10:07.680038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e50dac7ee0c674122702aab0321ac9120616e76d55d4976598a7ae18e77f2e78

Aliases

arxiv: 2606.17271 · arxiv_version: 2606.17271v1 · doi: 10.48550/arxiv.2606.17271 · pith_short_12: 4UG2Y7XAYZ2B · pith_short_16: 4UG2Y7XAYZ2BEJYC · pith_short_8: 4UG2Y7XA

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/4UG2Y7XAYZ2BEJYCVKYDEGWJCI \
  | 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: e50dac7ee0c674122702aab0321ac9120616e76d55d4976598a7ae18e77f2e78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7b1b72bd6ac3f4c2af2affb658349d9c757f8cf8a504592ad62443f5de3b684",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-15T20:31:54Z",
    "title_canon_sha256": "6a7248b560879331051814b7a720ddbdda26bb29735424ec1528889f6dc70971"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.17271",
    "kind": "arxiv",
    "version": 1
  }
}