Pith Number

pith:OIHAKQX4

pith:2017:OIHAKQX4VQYMNP7SYYR3PXLKNX

not attested not anchored not stored refs pending

The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-ray Survey

Benny Trakhtenbrot, Carolin Cardamone, C. Megan Urry, Daniel Stern, Duncan Farrah, Eilat Glikman, Ezequiel Treister, Francesca Civano, Giorgio Lanzuisi, Gordon Richards, Jane R. Rigby, Mara Salvato, Marcella Brusa, Paolo Coppi, Paulina Lira, Rachael Alexandroff, S. Komossa, Stefano Marchesi, Stephanie M. LaMassa, Tonima Tasnim Ananna, Viola Allevato

arxiv:1709.01578 v1 · 2017-09-05 · 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{OIHAKQX4VQYMNP7SYYR3PXLKNX}

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	2026-05-18T00:33:48.279437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

720e0542fcac30c6bff2c623b7dd6a6df606ebaac955051438b6f6b16bcbd79f

Aliases

arxiv: 1709.01578 · arxiv_version: 1709.01578v1 · doi: 10.48550/arxiv.1709.01578 · pith_short_12: OIHAKQX4VQYM · pith_short_16: OIHAKQX4VQYMNP7S · pith_short_8: OIHAKQX4

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/OIHAKQX4VQYMNP7SYYR3PXLKNX \
  | 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: 720e0542fcac30c6bff2c623b7dd6a6df606ebaac955051438b6f6b16bcbd79f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82e0464945191a6be381a1fbc1d28886ab885aea9113cb13745f21f7969a5c90",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-05T20:00:00Z",
    "title_canon_sha256": "d958d59b54e2c3f6b3cd460424401667f41e561368af9a6587d5298059aed3c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01578",
    "kind": "arxiv",
    "version": 1
  }
}