Pith Number

pith:N7HT6AKZ

pith:2019:N7HT6AKZ6BQ5SVSFEITE57MY6J

not attested not anchored not stored refs pending

Population Estimates for Electromagnetically-Distinguishable Supermassive Binary Black Holes

Julian H. Krolik, Julien Devriendt, Marta Volonteri, Yohan Dubois

arxiv:1905.10450 v1 · 2019-05-24 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7HT6AKZ6BQ5SVSFEITE57MY6J}

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	2026-05-17T23:40:31.735424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fcf3f0159f061d9564522264efd98f26657dcc6413b88c9e4bfd98b10ba84ee

Aliases

arxiv: 1905.10450 · arxiv_version: 1905.10450v1 · doi: 10.48550/arxiv.1905.10450 · pith_short_12: N7HT6AKZ6BQ5 · pith_short_16: N7HT6AKZ6BQ5SVSF · pith_short_8: N7HT6AKZ

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/N7HT6AKZ6BQ5SVSFEITE57MY6J \
  | 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: 6fcf3f0159f061d9564522264efd98f26657dcc6413b88c9e4bfd98b10ba84ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2a798a011019e713314c0efd5fc97a6d1fa8168c103325d37fa2304e518a290",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-05-24T21:27:09Z",
    "title_canon_sha256": "201954153a2d2fc3039a03cbeb1644871676859b691269a65666325c49ae1472"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10450",
    "kind": "arxiv",
    "version": 1
  }
}