Pith Number

pith:2QVLDDCL

pith:1998:2QVLDDCL7CH3KSWRFZURLJHI7C

not attested not anchored not stored refs pending

Strong observational constraints on Advection-Dominated Accretion in the cores of elliptical galaxies

(2) NRAO, (3) Institute for Astronomy, A.C. Fabian (1), Cambridge, C.L. Carilli (2), Edinburgh, M.J. Rees (1), NM, R.J. Ivison (3) ((1) IOA, Socorro, T. Di Matteo (1), UK, UK), US

arxiv:astro-ph/9807245 v1 · 1998-07-23 · 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{2QVLDDCL7CH3KSWRFZURLJHI7C}

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	2026-05-18T01:40:13.872101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d42ab18c4bf88fb54ad12e6915a4e8f88ffa2796066add0544d499fdd5b84ed4

Aliases

arxiv: astro-ph/9807245 · arxiv_version: astro-ph/9807245v1 · doi: 10.48550/arxiv.astro-ph/9807245 · pith_short_12: 2QVLDDCL7CH3 · pith_short_16: 2QVLDDCL7CH3KSWR · pith_short_8: 2QVLDDCL

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/2QVLDDCL7CH3KSWRFZURLJHI7C \
  | 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: d42ab18c4bf88fb54ad12e6915a4e8f88ffa2796066add0544d499fdd5b84ed4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "312d15b933673fec02d4623bd2771aa6395da458cdf2e3d3476f64b75aa38dcb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T18:24:44Z",
    "title_canon_sha256": "7f2843fb5934de7aa4f26c44210080f8840073a0c322d06d3b2e43c0d6da513f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807245",
    "kind": "arxiv",
    "version": 1
  }
}