Pith Number

pith:35IWXJOW

pith:2009:35IWXJOWSHNITPYKYYZETH7U6K

not attested not anchored not stored refs pending

Dark matter haloes determine the masses of supermassive black holes

C. M. Booth (Leiden), Joop Schaye (Leiden)

arxiv:0911.0935 v2 · 2009-11-05 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{35IWXJOWSHNITPYKYYZETH7U6K}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:10:59.431503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df516ba5d691da89bf0ac632499ff4f2bc37acdadbb3acc401d62c053d7c3b95

Aliases

arxiv: 0911.0935 · arxiv_version: 0911.0935v2 · doi: 10.48550/arxiv.0911.0935 · pith_short_12: 35IWXJOWSHNI · pith_short_16: 35IWXJOWSHNITPYK · pith_short_8: 35IWXJOW

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/35IWXJOWSHNITPYKYYZETH7U6K \
  | 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: df516ba5d691da89bf0ac632499ff4f2bc37acdadbb3acc401d62c053d7c3b95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc0a683f107ab3a7b5af94a2407a629e667ee3f700a08885caf90bc5dd28b95e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-05T16:25:53Z",
    "title_canon_sha256": "790759692487cd72d82040da48361ec939a1d7316b6b641234dfb3e6fe67d95d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0935",
    "kind": "arxiv",
    "version": 2
  }
}