Pith Number

pith:3TQ4ZDPC

pith:2012:3TQ4ZDPCPX45YUSMLIHRIIVYOF

not attested not anchored not stored refs pending

Revealing a strongly reddened, faint active galactic nucleus population by stacking deep co-added images

Istv\'an Csabai, J\'ozsef Varga, L\'aszl\'o Dobos

arxiv:1209.6231 v1 · 2012-09-27 · 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{3TQ4ZDPCPX45YUSMLIHRIIVYOF}

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	2026-05-18T03:44:34.934925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dce1cc8de27df9dc524c5a0f1422b8716dc0c1dc49e0118131d6ce66e62e6bdc

Aliases

arxiv: 1209.6231 · arxiv_version: 1209.6231v1 · doi: 10.48550/arxiv.1209.6231 · pith_short_12: 3TQ4ZDPCPX45 · pith_short_16: 3TQ4ZDPCPX45YUSM · pith_short_8: 3TQ4ZDPC

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/3TQ4ZDPCPX45YUSMLIHRIIVYOF \
  | 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: dce1cc8de27df9dc524c5a0f1422b8716dc0c1dc49e0118131d6ce66e62e6bdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44822a890e1266d67008668c827388fa235a26ed87493882127dfcaba0a5d8dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-27T13:55:32Z",
    "title_canon_sha256": "2154da2f654ddd486a03a2a8e85dc16c01fb6aec9e1656207b74e29f2929fa5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6231",
    "kind": "arxiv",
    "version": 1
  }
}