Pith Number

pith:LTJKIQ6U

pith:2021:LTJKIQ6UYK6DFKPUBOSSTUHFQV

not attested not anchored not stored refs pending

The importance of black hole repositioning for galaxy formation simulations

(2) University of Durham, 3), (3) Massachusetts Institute of Technology), Evgenii Chaikin (1), Folkert Nobels (1), Joop Schaye (1), Josh Borrow (2, Matthieu Schaller (1), Richard G. Bower (2), Roi Kugel (1), Sylvia Ploeckinger (1) ((1) Leiden University, Yannick M. Bah\'e (1)

arxiv:2109.01489 v3 · 2021-09-03 · 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{LTJKIQ6UYK6DFKPUBOSSTUHFQV}

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	2026-07-05T04:32:11.960446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cd2a443d4c2bc32a9f40ba529d0e585460f6e23c9e6c6d39bf6d2d0c4ddf9df

Aliases

arxiv: 2109.01489 · arxiv_version: 2109.01489v3 · doi: 10.48550/arxiv.2109.01489 · pith_short_12: LTJKIQ6UYK6D · pith_short_16: LTJKIQ6UYK6DFKPU · pith_short_8: LTJKIQ6U

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/LTJKIQ6UYK6DFKPUBOSSTUHFQV \
  | 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: 5cd2a443d4c2bc32a9f40ba529d0e585460f6e23c9e6c6d39bf6d2d0c4ddf9df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "874f6cd55b7eb93f1056f2e882fb0c21b74efdbcdf88dffb42e9376e61ddbe01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-03T13:06:10Z",
    "title_canon_sha256": "fd9ea2c96b5af89d2862c043c084cf61bb303899a0eb27033ea2a1dfea29a0ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.01489",
    "kind": "arxiv",
    "version": 3
  }
}