Pith Number

pith:BKCR23EO

pith:2009:BKCR23EOBYORU7IUMI4GLSX7NC

not attested not anchored not stored refs pending

The changing look of PKS 2149-306

A. Treves, A. Wolter, E. Pian, F. Tavecchio, G. Di Cocco, G. Ghisellini, G. Tagliaferri, L. Foschini, M. Gliozzi, R. M. Sambruna, V. Bianchin

arxiv:0902.1789 v1 · 2009-02-11 · astro-ph.HE · 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{BKCR23EOBYORU7IUMI4GLSX7NC}

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.

Cited by

2 papers in Pith

Spectral-Regime Overlap and Transition-like Behavior in the Blazar Population from Multi-Instrument X-ray and TeV Observations

Exploring the Transitional Parameter Space of Blazars using Gamma-ray and X-ray Population Diagnostics

Receipt and verification

First computed	2026-07-04T17:14:23.621204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a851d6c8e0e1d1a7d14623865caff68a881e93faa880409c0df4052a61ae5fb

Aliases

arxiv: 0902.1789 · arxiv_version: 0902.1789v1 · doi: 10.48550/arxiv.0902.1789 · pith_short_12: BKCR23EOBYOR · pith_short_16: BKCR23EOBYORU7IU · pith_short_8: BKCR23EO

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/BKCR23EOBYORU7IUMI4GLSX7NC \
  | 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: 0a851d6c8e0e1d1a7d14623865caff68a881e93faa880409c0df4052a61ae5fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ba87545d64e98f082b93497ec2aa95ba09a15b76356e94b61da1168a2778dfc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-02-11T14:24:15Z",
    "title_canon_sha256": "86e570751a44a420187f66f781fe4284b1c953b8534672f8a0e04cfac8e9416a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1789",
    "kind": "arxiv",
    "version": 1
  }
}