Pith Number

pith:F3EOO4R5

pith:2004:F3EOO4R5LZRJUBD3PFNZSCV22U

not attested not anchored not stored refs pending

Faint radio-loud quasars: clues to their evolution

A. Celotti, M. Cirasuolo, M. Magliocchetti

arxiv:astro-ph/0412131 v1 · 2004-12-06 · 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{F3EOO4R5LZRJUBD3PFNZSCV22U}

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	2026-07-04T16:45:21.644399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ec8e7723d5e629a047b795b990abad52eda9fc82a8c61b23642e256521d00ae

Aliases

arxiv: astro-ph/0412131 · arxiv_version: astro-ph/0412131v1 · doi: 10.48550/arxiv.astro-ph/0412131 · pith_short_12: F3EOO4R5LZRJ · pith_short_16: F3EOO4R5LZRJUBD3 · pith_short_8: F3EOO4R5

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/F3EOO4R5LZRJUBD3PFNZSCV22U \
  | 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: 2ec8e7723d5e629a047b795b990abad52eda9fc82a8c61b23642e256521d00ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f4a81b65bb7b7f89c0c5f1409c815fc742782c4c7d771fdf911062ecdca55d1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-06T16:20:28Z",
    "title_canon_sha256": "e40f151d535bb06f37cef6979fcf7c49f8c98d9ac58fbd582f974b999d00d340"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412131",
    "kind": "arxiv",
    "version": 1
  }
}