Pith Number

pith:4TK4452L

pith:2006:4TK4452LCAAC6CLW4LFAWZGOXF

not attested not anchored not stored refs pending

Spitzer Observations of 3C Quasars and Radio Galaxies: Mid-Infrared Properties of Powerful Radio Sources

(2) Cornell University), California Institute of Technology, C.R. Lawrence (1), D. Meier (1) ((1) Jet Propulsion Laboratory, J.A. Marshall (2), K. Cleary (1), L. Hao (2)

arxiv:astro-ph/0612702 v1 · 2006-12-22 · 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{4TK4452LCAAC6CLW4LFAWZGOXF}

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	2026-05-18T04:29:14.561146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4d5ce774b10002f0976e2ca0b64ceb9509e69f189315c7f07a1e5279697b2ca

Aliases

arxiv: astro-ph/0612702 · arxiv_version: astro-ph/0612702v1 · doi: 10.48550/arxiv.astro-ph/0612702 · pith_short_12: 4TK4452LCAAC · pith_short_16: 4TK4452LCAAC6CLW · pith_short_8: 4TK4452L

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/4TK4452LCAAC6CLW4LFAWZGOXF \
  | 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: e4d5ce774b10002f0976e2ca0b64ceb9509e69f189315c7f07a1e5279697b2ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "919d2dd1b7904f81ce1fbe23e26c9ab1164f2e9dd4b82448875442abb3791257",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-22T21:54:20Z",
    "title_canon_sha256": "10790dadfa0b25929ec94b4a1bd4ca967fa908ea74872dce9ea3360f47b7b5c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612702",
    "kind": "arxiv",
    "version": 1
  }
}