Pith Number

pith:QLOZEEWY

pith:2010:QLOZEEWY74745DGNFZG5FXTSQO

not attested not anchored not stored refs pending

Witnessing the key early phase of quasar evolution: an obscured AGN pair in the interacting galaxy IRAS 20210+1121

C. Vignali, E. Piconcelli, F. Fiore, F. Nicastro, G. Lanzuisi, M. Guainazzi, R. Maiolino, S. Bianchi, S. Mathur

arxiv:1008.3987 v1 · 2010-08-24 · 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{QLOZEEWY74745DGNFZG5FXTSQO}

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	2026-05-18T02:05:43.414201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82dd9212d8ff3fce8ccd2e4dd2de7283a0ef0939052c4f286366503106801691

Aliases

arxiv: 1008.3987 · arxiv_version: 1008.3987v1 · doi: 10.48550/arxiv.1008.3987 · pith_short_12: QLOZEEWY7474 · pith_short_16: QLOZEEWY74745DGN · pith_short_8: QLOZEEWY

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/QLOZEEWY74745DGNFZG5FXTSQO \
  | 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: 82dd9212d8ff3fce8ccd2e4dd2de7283a0ef0939052c4f286366503106801691

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62517e7d127ba41c9236c350656d742745509a3e2eed90754a3b2e3298591513",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-24T08:45:28Z",
    "title_canon_sha256": "4bab97c6171ba9693b82a509b7f10ea3c7282142d3dd87d7ea6c0914c7912b50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.3987",
    "kind": "arxiv",
    "version": 1
  }
}