Pith Number

pith:WCON2XJR

pith:2021:WCON2XJREHEK27T6GSXY5GR4XG

not attested not anchored not stored refs pending

Variability in Quasar Light Curves: using quasars as standard candles

Dejan Stojkovic, Rance Solomon

arxiv:2110.03671 v3 · 2021-10-07 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WCON2XJREHEK27T6GSXY5GR4XG}

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	2026-07-05T04:35:57.139670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b09cdd5d3121c8ad7e7e34af8e9a3cb986988c68a64d42c13b15f17f08c76660

Aliases

arxiv: 2110.03671 · arxiv_version: 2110.03671v3 · doi: 10.48550/arxiv.2110.03671 · pith_short_12: WCON2XJREHEK · pith_short_16: WCON2XJREHEK27T6 · pith_short_8: WCON2XJR

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/WCON2XJREHEK27T6GSXY5GR4XG \
  | 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: b09cdd5d3121c8ad7e7e34af8e9a3cb986988c68a64d42c13b15f17f08c76660

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19daefde935b5c6b84a27f28108fa9cbb2dd8c41f4202f7c346f90c1059bfbe3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-10-07T17:56:20Z",
    "title_canon_sha256": "ba8d3eb57079828df98ae7d43b84fedfc6469ee87cc1cf818513cb39da535d6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.03671",
    "kind": "arxiv",
    "version": 3
  }
}