Pith Number

pith:VTTFUQX7

pith:2010:VTTFUQX76GF6IMYNJBWZ354RH3

not attested not anchored not stored refs pending

X-ray and radio variability in the low luminosity Active Galactic Nucleus NGC 7213

D.E.Calvelo, E.Breedt, E.Koerding, I.McHardy, M.E.Bell (Southampton), O.Jamil, P. Arevalo, P.Uttley, R.P.Fender, T.Tzioumis

arxiv:1009.2430 v1 · 2010-09-13 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTTFUQX76GF6IMYNJBWZ354RH3}

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	2026-05-18T02:05:31.184541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ace65a42fff18be4330d486d9df7913ecfe0a80a3d8c4c45fd4efe8ec21dcff4

Aliases

arxiv: 1009.2430 · arxiv_version: 1009.2430v1 · doi: 10.48550/arxiv.1009.2430 · pith_short_12: VTTFUQX76GF6 · pith_short_16: VTTFUQX76GF6IMYN · pith_short_8: VTTFUQX7

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/VTTFUQX76GF6IMYNJBWZ354RH3 \
  | 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: ace65a42fff18be4330d486d9df7913ecfe0a80a3d8c4c45fd4efe8ec21dcff4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40e3489728a22af3bb11ae63d7dd61458a497f58cfe28004be9b63c4c0a9d8e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-09-13T15:49:59Z",
    "title_canon_sha256": "e03885e382963a19c7b9d9c9d4277ef5fa14835b1cc0e27623c8690b6a975eda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2430",
    "kind": "arxiv",
    "version": 1
  }
}