Pith Number

pith:X7ELMOBK

pith:2013:X7ELMOBKWEMA6ZORX2D5BBM4Q3

not attested not anchored not stored refs pending

Dust Reddened Quasars in FIRST and UKIDSS: Beyond the Tip of the Iceberg

Ashish Mahabal, Donald P. Schneider, Eilat Glikman, Jian Ge, Mark Lacy, Matthew Graham, Meg Urry, Scott Croom, S. G. Djorgovski, Tanya Urrutia

arxiv:1309.6626 v1 · 2013-09-25 · 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{X7ELMOBKWEMA6ZORX2D5BBM4Q3}

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	2026-05-18T01:47:26.627596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfc8b6382ab1180f65d1be87d0859c86c22e4130775e0a77f4de45f5b8f79a54

Aliases

arxiv: 1309.6626 · arxiv_version: 1309.6626v1 · doi: 10.48550/arxiv.1309.6626 · pith_short_12: X7ELMOBKWEMA · pith_short_16: X7ELMOBKWEMA6ZOR · pith_short_8: X7ELMOBK

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/X7ELMOBKWEMA6ZORX2D5BBM4Q3 \
  | 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: bfc8b6382ab1180f65d1be87d0859c86c22e4130775e0a77f4de45f5b8f79a54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35ea0301271f146b3281d049b048ea98bb0194e8184f43df96f557399fedb4d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-25T19:58:10Z",
    "title_canon_sha256": "dd251ff12948f6023130660b5d481b49e8435b40304a29bfda192ae37280b44c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6626",
    "kind": "arxiv",
    "version": 1
  }
}