Pith Number

pith:UKJ4LBCQ

pith:2000:UKJ4LBCQBGC7QIWNQ6CBGIACPU

not attested not anchored not stored refs pending

Constraining the black hole mass and accretion rate in the narrow-line Seyfert 1 RE J1034+396

A. Comastri, A. Fruscione, A. Siemiginowska, E.M. Puchnarewicz, F. Fiore, I. Cagnoni, K.O. Mason

arxiv:astro-ph/0011389 v1 · 2000-11-21 · 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{UKJ4LBCQBGC7QIWNQ6CBGIACPU}

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	2026-07-04T16:17:38.773124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a293c584500985f822cd87841320027d392ab445636a1abcb8d04e71813c009c

Aliases

arxiv: astro-ph/0011389 · arxiv_version: astro-ph/0011389v1 · doi: 10.48550/arxiv.astro-ph/0011389 · pith_short_12: UKJ4LBCQBGC7 · pith_short_16: UKJ4LBCQBGC7QIWN · pith_short_8: UKJ4LBCQ

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/UKJ4LBCQBGC7QIWNQ6CBGIACPU \
  | 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: a293c584500985f822cd87841320027d392ab445636a1abcb8d04e71813c009c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec1e60e552e6fcf6ca6b43a4b240e5e198ed7fd142303c54704803ffbdfb3cce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-21T14:54:39Z",
    "title_canon_sha256": "4eebd4c7191f2a2ba42e0ab5cc1b50dd3143c9ad212bbb107e91a5bad7374bb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011389",
    "kind": "arxiv",
    "version": 1
  }
}