Pith Number

pith:UBW7AOD3

pith:2025:UBW7AOD3O5R5WDOMZYSLFMYRTA

not attested not anchored not stored refs pending

A new class of dark matter-free dwarf galaxies? I. Clues from FCC 224, NGC 1052-DF2 and NGC 1052-DF4

Aaron J. Romanowsky, Anna Ferr\'e-Mateu, Duncan A. Forbes, Jean P. Brodie, Jonah S. Gannon, Lucas M. Valenzuela, Lydia Haacke, Maria Luisa Buzzo, Michael Hilker, Steven R. Janssens, Yimeng Tang

arxiv:2502.05405 v1 · 2025-02-08 · 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{UBW7AOD3O5R5WDOMZYSLFMYRTA}

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	2026-07-05T10:28:35.076859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a06df0387b7763db0dccce24b2b311983184beb0b80b0bf065ca3bc5b0b183bc

Aliases

arxiv: 2502.05405 · arxiv_version: 2502.05405v1 · doi: 10.48550/arxiv.2502.05405 · pith_short_12: UBW7AOD3O5R5 · pith_short_16: UBW7AOD3O5R5WDOM · pith_short_8: UBW7AOD3

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/UBW7AOD3O5R5WDOMZYSLFMYRTA \
  | 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: a06df0387b7763db0dccce24b2b311983184beb0b80b0bf065ca3bc5b0b183bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1375f4efb173fc84c7d7105c4d0763be82e48dbc10e6ab6d4cabb7ab8f076695",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-02-08T01:49:34Z",
    "title_canon_sha256": "29f2bb3c63997748d3ae8d3f242e2f25d0942c0c5897b81f2660f9635ca7cac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.05405",
    "kind": "arxiv",
    "version": 1
  }
}