Pith Number

pith:XRDJSHPA

pith:2010:XRDJSHPANT4P2J73H5SLW6ETDU

not attested not anchored not stored refs pending

Quasar Selection Based on Photometric Variability

A. C. Becker, A. Meisner, B. Sesar, C. L. MacLeod, C. S. Kochanek, K. Brooks, R. Gibson, S. Kozlowski, W. De Vries, Z. Ivezic

arxiv:1009.2081 v2 · 2010-09-10 · 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{XRDJSHPANT4P2J73H5SLW6ETDU}

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	2026-05-18T04:30:36.433714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc46991de06cf8fd27fb3f64bb78931d3a799e5706070f8a549ff5e0c3a227e0

Aliases

arxiv: 1009.2081 · arxiv_version: 1009.2081v2 · doi: 10.48550/arxiv.1009.2081 · pith_short_12: XRDJSHPANT4P · pith_short_16: XRDJSHPANT4P2J73 · pith_short_8: XRDJSHPA

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/XRDJSHPANT4P2J73H5SLW6ETDU \
  | 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: bc46991de06cf8fd27fb3f64bb78931d3a799e5706070f8a549ff5e0c3a227e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c302bfc025c657b525b64f00e344b2f7147e0a3bf7a12617cb7b287a0dc6510d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-10T19:29:38Z",
    "title_canon_sha256": "f325bf6a5e6b95c836a2086f11a6189c73c41743afcec7911431a5118deac781"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2081",
    "kind": "arxiv",
    "version": 2
  }
}