Pith Number

pith:ZTABT6UL

pith:2018:ZTABT6ULKEY4UWK5OONWS7IRPA

not attested not anchored not stored refs pending

The formation of extremely diffuse galaxy cores by merging supermassive black holes

Antti Rantala, Jens Thomas, Matteo Frigo, Peter H. Johansson, Thorsten Naab

arxiv:1805.10295 v3 · 2018-05-25 · 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{ZTABT6ULKEY4UWK5OONWS7IRPA}

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	2026-05-18T00:06:24.771118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccc019fa8b5131ca595d739b697d11783a5e0ca97649329c708bc02905d61fb0

Aliases

arxiv: 1805.10295 · arxiv_version: 1805.10295v3 · doi: 10.48550/arxiv.1805.10295 · pith_short_12: ZTABT6ULKEY4 · pith_short_16: ZTABT6ULKEY4UWK5 · pith_short_8: ZTABT6UL

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/ZTABT6ULKEY4UWK5OONWS7IRPA \
  | 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: ccc019fa8b5131ca595d739b697d11783a5e0ca97649329c708bc02905d61fb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b1ffffc04faf4c0f0445d8afcb731128c11016febd97a081fc98bd2b9bb5943",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-25T18:00:08Z",
    "title_canon_sha256": "9a910118961d2c37bffda4a2961e2feb3afa59c8e11f9683fb10ea490c8cf7cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10295",
    "kind": "arxiv",
    "version": 3
  }
}