Pith Number

pith:WP4UECAA

pith:2009:WP4UECAAMTWS4U6HVRRNHWMAFT

not attested not anchored not stored refs pending

AGN astrophysics via multi-frequency monitoring of gamma-ray blazars in the Fermi-GST era

A. C. S. Readhead, E. Angelakis, H. Ungerechts, I. Nestoras, J. A. Zensus, J. L. Richards, L. Fuhrmann, M. A. Stevenson, N. Marchili, T. J. Pearson, T. P. Krichbaum, V. Pavlidou, W. Max-Moerbeck

arxiv:0910.0643 v1 · 2009-10-04 · 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{WP4UECAAMTWS4U6HVRRNHWMAFT}

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	2026-07-04T15:53:39.086374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3f942080064ed2e53c7ac62d3d9802cf72db529a9b59357edc008c3ce7bbb32

Aliases

arxiv: 0910.0643 · arxiv_version: 0910.0643v1 · doi: 10.48550/arxiv.0910.0643 · pith_short_12: WP4UECAAMTWS · pith_short_16: WP4UECAAMTWS4U6H · pith_short_8: WP4UECAA

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/WP4UECAAMTWS4U6HVRRNHWMAFT \
  | 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: b3f942080064ed2e53c7ac62d3d9802cf72db529a9b59357edc008c3ce7bbb32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a07aa03d54f02990a9764755f038989a01b703daf1bcf1082ecd7ef44760e7c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-10-04T21:25:55Z",
    "title_canon_sha256": "ad10bc619b17e44cf186ee2056adf13e097b43cd569aa51446fe3b7c1abe7061"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0643",
    "kind": "arxiv",
    "version": 1
  }
}