Pith Number

pith:VTQ2UI7D

pith:2002:VTQ2UI7DXJHJUJ4EGM7N32DWOL

not attested not anchored not stored refs pending

A sample of southern Compact Steep Spectrum radio sources: The VLBI observations

A. Tzioumis, C. Fanti, C. Tadhunter, D. Dallacasa, D. Jauncey, D. Jones, D. Meier, D. Murphy, E. King, G. White, J. Lovell, J. Reynolds, M. Costa, P. Edwards, P. Jones, P. McCulloch, R. Clay, R. Ferris, R. Gough, R. Morganti, R. Preston, S. Tingay

arxiv:astro-ph/0207495 v1 · 2002-07-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTQ2UI7DXJHJUJ4EGM7N32DWOL}

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	2026-07-04T16:30:25.851059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ace1aa23e3ba4e9a2784333edde87672f8f5521cd376b801e6703d0296eacc19

Aliases

arxiv: astro-ph/0207495 · arxiv_version: astro-ph/0207495v1 · doi: 10.48550/arxiv.astro-ph/0207495 · pith_short_12: VTQ2UI7DXJHJ · pith_short_16: VTQ2UI7DXJHJUJ4E · pith_short_8: VTQ2UI7D

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/VTQ2UI7DXJHJUJ4EGM7N32DWOL \
  | 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: ace1aa23e3ba4e9a2784333edde87672f8f5521cd376b801e6703d0296eacc19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b308a6e735b521129da146f859b8b07efa64b79b7306845ea8280fb2a1c0eff",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-07-23T11:17:17Z",
    "title_canon_sha256": "2f945f872d4e983c657b948f0aec19cb2dd656ecd40f0ab7c2d9f023fb36f3d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0207495",
    "kind": "arxiv",
    "version": 1
  }
}