Pith Number

pith:NCREV47W

pith:2018:NCREV47WELCO4NECMNWHA3H7LU

not attested not anchored not stored refs pending

NGC 4051: Black hole mass and photon index-mass accretion rate correlation

Alexandre Chekhtman (GMU, Elena Seifina (LAPTH, France, Italy), Lev Titarchuk (University of Ferrara, MSU-GAISH, Russia), USA)

arxiv:1802.07337 v1 · 2018-02-19 · astro-ph.GA · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NCREV47WELCO4NECMNWHA3H7LU}

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	2026-05-18T00:13:27.641246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68a24af3f622c4ee3482636c706cff5d2589f08fffc5eac732cd4e03c65883e6

Aliases

arxiv: 1802.07337 · arxiv_version: 1802.07337v1 · doi: 10.48550/arxiv.1802.07337 · pith_short_12: NCREV47WELCO · pith_short_16: NCREV47WELCO4NEC · pith_short_8: NCREV47W

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/NCREV47WELCO4NECMNWHA3H7LU \
  | 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: 68a24af3f622c4ee3482636c706cff5d2589f08fffc5eac732cd4e03c65883e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb62d05f19aaef8f014582c73e474069886929fe88835688f2b0085f85b53823",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-19T17:47:13Z",
    "title_canon_sha256": "2eb5483dabcb02808aace94cfa8b141ac2be73da41207e0fb4282689155d7603"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07337",
    "kind": "arxiv",
    "version": 1
  }
}