Pith Number

pith:KCS4NPJW

pith:2012:KCS4NPJW2FE2RJNSF7FGHYRTNF

not attested not anchored not stored refs pending

Further Evidence that Quasar X-Ray Emitting Regions Are Compact: X-Ray and Optical Microlensing in the Lensed Quasar Q J0158-4325

Ana M. Mosquera, Bin Chen, Christopher S. Kochanek, Christopher W. Morgan, Frederic Courbin, George Chartas, Georges Meylan, Jeffrey A. Blackburne, Laura J. Hainline, Malte Tewes, Szymon Kozlowski, Xinyu Dai

arxiv:1205.4727 v1 · 2012-05-21 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KCS4NPJW2FE2RJNSF7FGHYRTNF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:57:24.819344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50a5c6bd36d149a8a5b22fca63e23369778eaf0a4c7740e80da4778ddf81f2aa

Aliases

arxiv: 1205.4727 · arxiv_version: 1205.4727v1 · doi: 10.48550/arxiv.1205.4727 · pith_short_12: KCS4NPJW2FE2 · pith_short_16: KCS4NPJW2FE2RJNS · pith_short_8: KCS4NPJW

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/KCS4NPJW2FE2RJNSF7FGHYRTNF \
  | 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: 50a5c6bd36d149a8a5b22fca63e23369778eaf0a4c7740e80da4778ddf81f2aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "447ced6be518bb36e2df65949e02d08de6fbbe6248121564f6822911be046172",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-21T20:00:41Z",
    "title_canon_sha256": "7f1b8294e1c0cc684f462c68f3771039c72490d5f9762b038c2cf714408e3b4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4727",
    "kind": "arxiv",
    "version": 1
  }
}