Pith Number

pith:EJQRV6D3

pith:2010:EJQRV6D3CWOVRBSGUQ3EEGGTPN

not attested not anchored not stored refs pending

Spectral optical monitoring of 3C390.3 in 1995-2007: I. Light curves and flux variation of the continuum and broad lines

A.I. Shapovalova, A. Kovacevic N.G. Bochkarev, A. Mercado, A.N.Burenkov, D.Ilic W. Kollatschny, E. De la Fuente, J. Le\'on-Tavares, J.R. Valdes, L. Carrasco, L. C. Popovic, V.H. Chavushyan, V.V. Vlasuyk

arxiv:1003.2098 v2 · 2010-03-10 · astro-ph.GA · 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{EJQRV6D3CWOVRBSGUQ3EEGGTPN}

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	2026-05-18T04:36:59.333763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22611af87b159d588646a4364218d37b431fd275bbb22013ae39be7ac8e85308

Aliases

arxiv: 1003.2098 · arxiv_version: 1003.2098v2 · doi: 10.48550/arxiv.1003.2098 · pith_short_12: EJQRV6D3CWOV · pith_short_16: EJQRV6D3CWOVRBSG · pith_short_8: EJQRV6D3

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/EJQRV6D3CWOVRBSGUQ3EEGGTPN \
  | 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: 22611af87b159d588646a4364218d37b431fd275bbb22013ae39be7ac8e85308

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4915de7d4ed58df056d7f1316d996bf3e9c2ca9191a69bc78fe951e12e67293e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-03-10T12:43:29Z",
    "title_canon_sha256": "c09d1191fb1fe5c3271d0024b817e3ee554980e2b1288f721ef3122804ef35cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.2098",
    "kind": "arxiv",
    "version": 2
  }
}