Pith Number

pith:GZDJA3GU

pith:2026:GZDJA3GUA3GKCSEE6RBQRP2SWX

not attested not anchored not stored refs pending

Little Red and Blue Dots: AGN-excited narrow lines, Lyman-$\alpha$ emission, and resemblance to standard quasars

Andrea Comastri, Andrew J. Bunker, Anishya Harshan, Brant Robertson, Cristian Vignali, Cristina Ramos Almeida, Eleonora Parlanti, Emma Curtis Lake, Fabio Vito, Francesco D'Eugenio, Gareth Jones, Giacomo Venturi, Giorgio Lanzuisi, Giovanni Mazzolari, Guido Risaliti, Hannah \"Ubler, Ignas Juod\v{z}balis, Jan Scholtz, Kevin Hainline, Laura Pentericci, Lorenzo Napolitano, Maddie S. Silcock, Marcella Brusa, Matilde Brazzini, Mirko Curti, Pierluigi Rinaldi, Piero Madau, Roberta Tripodi, Roberto Gilli, Roberto Maiolino, Sophia Geris, Stefano Carniani, Stefano Marchesi, Stephane Charlot, William Baker, Xihan Ji, Yongda Zhu, Yuki Isobe

arxiv:2606.21614 v1 · 2026-06-19 · 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{GZDJA3GUA3GKCSEE6RBQRP2SWX}

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	2026-06-23T01:13:16.525132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3646906cd406cca14884f44308bf52b5ed293d9575821cbb41cf80fa55d8e27a

Aliases

arxiv: 2606.21614 · arxiv_version: 2606.21614v1 · doi: 10.48550/arxiv.2606.21614 · pith_short_12: GZDJA3GUA3GK · pith_short_16: GZDJA3GUA3GKCSEE · pith_short_8: GZDJA3GU

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/GZDJA3GUA3GKCSEE6RBQRP2SWX \
  | 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: 3646906cd406cca14884f44308bf52b5ed293d9575821cbb41cf80fa55d8e27a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "196cfd7ef11974f58935d06110640dc854303be42464eb9aea93d31540b87cc3",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-19T17:18:13Z",
    "title_canon_sha256": "22b7413f85efdcdaf0fede31ce75df2e724741a215142c40e034bc9b14680ccb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21614",
    "kind": "arxiv",
    "version": 1
  }
}