Pith Number

pith:J3JLRUFY

pith:2015:J3JLRUFY5BYWNG7JF654A565EU

not attested not anchored not stored refs pending

Massive black holes in merging galaxies

Marta Volonteri, Massimo Dotti, Monica Colpi, Tamara Bogdanovic

arxiv:1509.09027 v1 · 2015-09-30 · 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{J3JLRUFY5BYWNG7JF654A565EU}

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	2026-05-18T01:31:29.305779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ed2b8d0b8e871669be92fbbc077dd251c548888c6ce21c9a59c4950bc2e6183

Aliases

arxiv: 1509.09027 · arxiv_version: 1509.09027v1 · doi: 10.48550/arxiv.1509.09027 · pith_short_12: J3JLRUFY5BYW · pith_short_16: J3JLRUFY5BYWNG7J · pith_short_8: J3JLRUFY

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/J3JLRUFY5BYWNG7JF654A565EU \
  | 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: 4ed2b8d0b8e871669be92fbbc077dd251c548888c6ce21c9a59c4950bc2e6183

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72383a5884e0f436c4621edbdd9d2c80e6e443f1b5d10bd967cf4d90fc82a1b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-30T06:44:24Z",
    "title_canon_sha256": "5065765e81d0049a69a0563585b250cae8090ce92276538d5509edafbba66e04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.09027",
    "kind": "arxiv",
    "version": 1
  }
}