Pith Number

pith:2E57GUPC

pith:2003:2E57GUPCQN3BQZHYVSHED2XO7D

not attested not anchored not stored refs pending

The nature of the absorbing torus in compact Radio Galaxies

CfA), G. Risaliti (Arcetri, Haute-Provence), L. Woltjer (Arcetri, M. Salvati (Arcetri)

arxiv:astro-ph/0301522 v1 · 2003-01-27 · 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{2E57GUPCQN3BQZHYVSHED2XO7D}

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	2026-05-18T04:21:42.133876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d13bf351e283761864f8ac8e41eaeef8d055d3d716d8545fcd5c589103b84b6b

Aliases

arxiv: astro-ph/0301522 · arxiv_version: astro-ph/0301522v1 · doi: 10.48550/arxiv.astro-ph/0301522 · pith_short_12: 2E57GUPCQN3B · pith_short_16: 2E57GUPCQN3BQZHY · pith_short_8: 2E57GUPC

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/2E57GUPCQN3BQZHYVSHED2XO7D \
  | 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: d13bf351e283761864f8ac8e41eaeef8d055d3d716d8545fcd5c589103b84b6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9f4275ee71164910012a9eb0ac52200c9429c17d177f2771bf94ab621cd4b47",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-01-27T16:30:05Z",
    "title_canon_sha256": "1e5cf535d07637cfbdd25cad4654dc09bf07eea035c5db885a11ed478be40e21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0301522",
    "kind": "arxiv",
    "version": 1
  }
}