Pith Number

pith:KD6Y7J3J

pith:2012:KD6Y7J3J6OLR7TE3ZSHXQLYRKW

not attested not anchored not stored refs pending

The Chandra view of the Largest Quasar Lens SDSS J1029+2623

Christopher S. Kochanek, Eran O. Ofek, Gordon T. Richards, Masamune Oguri, Naohisa Inada, Naomi Ota, Roger D. Blandford, Tim Schrabback, Xinyu Dai

arxiv:1202.1645 v2 · 2012-02-08 · 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{KD6Y7J3J6OLR7TE3ZSHXQLYRKW}

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	2026-05-18T01:58:32.484516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50fd8fa769f3971fcc9bcc8f782f11558a9ab58d5f2dfcd668ec7ff9bc5d9adc

Aliases

arxiv: 1202.1645 · arxiv_version: 1202.1645v2 · doi: 10.48550/arxiv.1202.1645 · pith_short_12: KD6Y7J3J6OLR · pith_short_16: KD6Y7J3J6OLR7TE3 · pith_short_8: KD6Y7J3J

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/KD6Y7J3J6OLR7TE3ZSHXQLYRKW \
  | 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: 50fd8fa769f3971fcc9bcc8f782f11558a9ab58d5f2dfcd668ec7ff9bc5d9adc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d8f87f6b00438c91f5206316f09043f1b24b3c22fcad3f32682b7ccdbd7f008",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-02-08T10:16:26Z",
    "title_canon_sha256": "5da4354f91d6bf89631f2570ea25a36bf96ca0126468d0dc513110a0eeb8b2ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1645",
    "kind": "arxiv",
    "version": 2
  }
}