Pith Number

pith:AUBHNOPS

pith:2021:AUBHNOPSQXHWYEQJEMTNMSN22B

not attested not anchored not stored refs pending

Signatures of the Many Supermassive Black Hole Mergers in a Cosmologically Forming Massive Early-Type Galaxy

Alexander Rawlings, Antti Rantala, Matias Mannerkoski, Peter H. Johansson, Shihong Liao, Thorsten Naab

arxiv:2112.03576 v2 · 2021-12-07 · 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{AUBHNOPSQXHWYEQJEMTNMSN22B}

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	2026-07-05T04:17:38.137719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

050276b9f285cf6c12092326d649bad04af6bb854708d6fe865ad1ce2e4a4e89

Aliases

arxiv: 2112.03576 · arxiv_version: 2112.03576v2 · doi: 10.48550/arxiv.2112.03576 · pith_short_12: AUBHNOPSQXHW · pith_short_16: AUBHNOPSQXHWYEQJ · pith_short_8: AUBHNOPS

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/AUBHNOPSQXHWYEQJEMTNMSN22B \
  | 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: 050276b9f285cf6c12092326d649bad04af6bb854708d6fe865ad1ce2e4a4e89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2551444a7cf95d0e23b8a389db74162751a67c028ccb2eb969d04fc29b661b1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-07T08:57:42Z",
    "title_canon_sha256": "1363157494c6607fa12b15a34892d0cbc0dc12df90502e55f7572cc4bdadd2ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.03576",
    "kind": "arxiv",
    "version": 2
  }
}