Pith Number

pith:QPDANWR2

pith:2013:QPDANWR2XJJCFSCULRAOB2I7XB

not attested not anchored not stored refs pending

Spectral optical monitoring of a double-peaked emission line AGN Arp 102B: I. Variability of spectral lines and continuum

A. I. Shapovalova, A. Kovacevic, A. Mercado, A. N. Burenkov, D. Dultzin, D. Ilic, E. Benitez, J. Leon-Tavares, J.R. Valdes, J. Torrealba, L. Carrasco, L. C. Popovic, N. G. Bochkarev, V. E. Zhdanova, V.H. Chavushyan, V. Patino-Alvarez, W. Kollatschny

arxiv:1308.2407 v1 · 2013-08-11 · 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{QPDANWR2XJJCFSCULRAOB2I7XB}

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	2026-05-18T01:48:16.480305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c606da3aba5222c8545c40e0e91fb85badffa30d5b9b46ac7c5af602ddb7b0

Aliases

arxiv: 1308.2407 · arxiv_version: 1308.2407v1 · doi: 10.48550/arxiv.1308.2407 · pith_short_12: QPDANWR2XJJC · pith_short_16: QPDANWR2XJJCFSCU · pith_short_8: QPDANWR2

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/QPDANWR2XJJCFSCULRAOB2I7XB \
  | 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: 83c606da3aba5222c8545c40e0e91fb85badffa30d5b9b46ac7c5af602ddb7b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "600d9b7de8e39dac64af30f4350e9ee84cd8d12d670501ef0adf39e887b60131",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-11T16:37:44Z",
    "title_canon_sha256": "d705ad2a2dfdc0eac1a187a35aa4a3359430fc0ebb68d81ebf56ddb6e183d908"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2407",
    "kind": "arxiv",
    "version": 1
  }
}