Pith Number

pith:TQXAIRTO

pith:2009:TQXAIRTO66OOM7N63SY47G3XRV

not attested not anchored not stored refs pending

Microlensing Evidence That A Type 1 Quasar Is Viewed Face On

Christopher S. Kochanek (Department of Astronomy, Shawn Poindexter, The Ohio State University)

arxiv:0910.3669 v2 · 2009-10-19 · 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{TQXAIRTO66OOM7N63SY47G3XRV}

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	2026-05-18T02:34:18.263101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c2e04466ef79ce67dbedcb1cf9b778d6dcdf59f77a271bd0f85acb61103f8d2

Aliases

arxiv: 0910.3669 · arxiv_version: 0910.3669v2 · doi: 10.48550/arxiv.0910.3669 · pith_short_12: TQXAIRTO66OO · pith_short_16: TQXAIRTO66OOM7N6 · pith_short_8: TQXAIRTO

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/TQXAIRTO66OOM7N63SY47G3XRV \
  | 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: 9c2e04466ef79ce67dbedcb1cf9b778d6dcdf59f77a271bd0f85acb61103f8d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60c9d8de0d6a414ca583067f3426e0d3dd57d0e9aaa38477f222feeb81fc70e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-19T20:00:12Z",
    "title_canon_sha256": "36433be27586c3598c0931c387b85de8b02e65b966f3fc56e40a0e8fc663c106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3669",
    "kind": "arxiv",
    "version": 2
  }
}