Pith Number

pith:W4OV7TPB

pith:2026:W4OV7TPBICOCTEGVCWF5J2QC7V

not attested not anchored not stored refs pending

Ultraviolet diversity of Little Red Dots as a probe for direct-collapse black hole ages

Dale D. Kocevski, Elia Cenci, Melanie Habouzit

arxiv:2606.00205 v1 · 2026-05-29 · 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{W4OV7TPBICOCTEGVCWF5J2QC7V}

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	2026-06-02T01:03:21.504201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b71d5fcde1409c2990d5158bd4ea02fd49cafc6fc9079be0d8f9342e01035ed5

Aliases

arxiv: 2606.00205 · arxiv_version: 2606.00205v1 · doi: 10.48550/arxiv.2606.00205 · pith_short_12: W4OV7TPBICOC · pith_short_16: W4OV7TPBICOCTEGV · pith_short_8: W4OV7TPB

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/W4OV7TPBICOCTEGVCWF5J2QC7V \
  | 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: b71d5fcde1409c2990d5158bd4ea02fd49cafc6fc9079be0d8f9342e01035ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9d0a6f8d4e5d2fa86d4aa11885c571a30704c124da6a7ef35a9b29b44667fac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-29T18:00:00Z",
    "title_canon_sha256": "2f0296e580db0a4127fe6c5204264a9a8dd3a86063cca5b0f4a14283695eaac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.00205",
    "kind": "arxiv",
    "version": 1
  }
}