Pith Number

pith:3ZG2B6FZ

pith:2022:3ZG2B6FZYQ4CG7M7U57SS35IVO

not attested not anchored not stored refs pending

Using Artificial Intelligence and real galaxy images to constrain parameters in galaxy formation simulations

Andrea V. Macci\`o, Fabian Walter, Hind Al Noori, Mohamad Ali-Dib, Nico Krieger, Pavle Vulanovi\'c, Tobias Buck

arxiv:2202.09376 v1 · 2022-02-18 · 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{3ZG2B6FZYQ4CG7M7U57SS35IVO}

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	2026-07-05T04:01:11.967069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de4da0f8b9c438237d9fa77f296fa8abaf62c809101327c72cc82eb3393b6a92

Aliases

arxiv: 2202.09376 · arxiv_version: 2202.09376v1 · doi: 10.48550/arxiv.2202.09376 · pith_short_12: 3ZG2B6FZYQ4C · pith_short_16: 3ZG2B6FZYQ4CG7M7 · pith_short_8: 3ZG2B6FZ

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/3ZG2B6FZYQ4CG7M7U57SS35IVO \
  | 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: de4da0f8b9c438237d9fa77f296fa8abaf62c809101327c72cc82eb3393b6a92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9589c0830da00707f8b192c7c57aeb51e31682f35bf70d0cd2e1f23f23be24ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-02-18T19:00:02Z",
    "title_canon_sha256": "9959e44a5a119034aa54171b3475e29ad6e7f34d7ce15a51b6f3e444b9c70cd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.09376",
    "kind": "arxiv",
    "version": 1
  }
}