Pith Number

pith:4ILQ2PEP

pith:2013:4ILQ2PEPXLZAMZFAHZXGI4GS3H

not attested not anchored not stored refs pending

FM 047-02: a collisional pair of galaxies with a ring

A.C. Krabbe, I.F. Fernandes, M. de Oliveira-Abans, M. Faundez-Abans, P.C. da Rocha-Poppe, V.A. Fernandes-Martin

arxiv:1310.6807 v1 · 2013-10-25 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ILQ2PEPXLZAMZFAHZXGI4GS3H}

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	2026-05-18T03:08:57.544031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2170d3c8fbaf20664a03e6e6470d2d9e96877766ee15ea6eb2acd7bc42230e2

Aliases

arxiv: 1310.6807 · arxiv_version: 1310.6807v1 · doi: 10.48550/arxiv.1310.6807 · pith_short_12: 4ILQ2PEPXLZA · pith_short_16: 4ILQ2PEPXLZAMZFA · pith_short_8: 4ILQ2PEP

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/4ILQ2PEPXLZAMZFAHZXGI4GS3H \
  | 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: e2170d3c8fbaf20664a03e6e6470d2d9e96877766ee15ea6eb2acd7bc42230e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf99201416e379625db1769ef366f7c07a18249ecb9a8b56752a861c0fd50bf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-25T02:36:38Z",
    "title_canon_sha256": "f6e4cd66e1e216fe1e88c4c7933f27c4bb88c340e295455e003b0c08124eea39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.6807",
    "kind": "arxiv",
    "version": 1
  }
}