Pith Number

pith:VELD5QBC

pith:2000:VELD5QBC2BISWD4HAKJDAA7NPR

not attested not anchored not stored refs pending

HST/NICMOS observations of the host galaxies of powerful radio sources: Does size matter?

C. Fanti, C. P. O'Dea, M. D. Lehnert, P. D. Barthel, R. Fanti, W. H. de Vries

arxiv:astro-ph/0007424 v1 · 2000-07-27 · 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{VELD5QBC2BISWD4HAKJDAA7NPR}

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	2026-07-04T16:16:57.804620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9163ec022d0512b0f8702923003ed7c66ffa48ee8f93855c495d552d74b86b5

Aliases

arxiv: astro-ph/0007424 · arxiv_version: astro-ph/0007424v1 · doi: 10.48550/arxiv.astro-ph/0007424 · pith_short_12: VELD5QBC2BIS · pith_short_16: VELD5QBC2BISWD4H · pith_short_8: VELD5QBC

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/VELD5QBC2BISWD4HAKJDAA7NPR \
  | 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: a9163ec022d0512b0f8702923003ed7c66ffa48ee8f93855c495d552d74b86b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "848fca33829e0fbcb0e31e83470b923214bae0bd0578b4a54d39e6a0489ed283",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-27T22:13:01Z",
    "title_canon_sha256": "905b2cc206a5bfd9505a1d6795357407097038427a0f926e51dfe13f3fb0a1f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007424",
    "kind": "arxiv",
    "version": 1
  }
}