Pith Number

pith:EERYCWTO

pith:2006:EERYCWTOSITX42KVLXNYX5DWVF

not attested not anchored not stored refs pending

The Hard X-ray Spectral Slope as an Accretion-Rate Indicator in Radio-Quiet Active Galactic Nuclei

(2) Tel Aviv U., (3) INAF - Arcetri, 4) ((1) PSU, (4) Technion), Hagai Netzer (2), Ohad Shemmer (1), Roberto Maiolino (3), Shai Kaspi (2, W.N. Brandt (1)

arxiv:astro-ph/0606389 v1 · 2006-06-15 · 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{EERYCWTOSITX42KVLXNYX5DWVF}

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	2026-07-04T16:58:53.624393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2123815a6e92277e69555ddb8bf476a97ac56d2ef5c36d7eb6ba748b3e0da24b

Aliases

arxiv: astro-ph/0606389 · arxiv_version: astro-ph/0606389v1 · doi: 10.48550/arxiv.astro-ph/0606389 · pith_short_12: EERYCWTOSITX · pith_short_16: EERYCWTOSITX42KV · pith_short_8: EERYCWTO

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/EERYCWTOSITX42KVLXNYX5DWVF \
  | 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: 2123815a6e92277e69555ddb8bf476a97ac56d2ef5c36d7eb6ba748b3e0da24b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9229c4f96d394fce2e8dbc6be54ee625dfca785caa113ff34c47582ad68d733",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-06-15T20:00:07Z",
    "title_canon_sha256": "e90e7d24a9b94e965b5604dcf0a27e19bc72120dffbdc0a8bb52d521b060962e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0606389",
    "kind": "arxiv",
    "version": 1
  }
}