Pith Number

pith:UWXPBCYP

pith:2001:UWXPBCYP3CAILAOYUS5EY7UQFJ

not attested not anchored not stored refs pending

High-resolution HI Mapping of NGC 4038/9 ("The Antennae") and its Tidal Dwarf Galaxy Candidates

J.E. Barnes (IfA), J.E. Hibbard (NRAO), J.M. van der Hulst (Kapteyn), R.M. Rich (UCLA)

arxiv:astro-ph/0110581 v1 · 2001-10-26 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UWXPBCYP3CAILAOYUS5EY7UQFJ}

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.

Cited by

1 paper in Pith

The Bright Future of the Dark and Dim Universe

Receipt and verification

First computed	2026-07-04T16:24:21.272071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5aef08b0fd8808581d8a4ba4c7e902a58e2fb104367825570713e243bfdabca

Aliases

arxiv: astro-ph/0110581 · arxiv_version: astro-ph/0110581v1 · doi: 10.48550/arxiv.astro-ph/0110581 · pith_short_12: UWXPBCYP3CAI · pith_short_16: UWXPBCYP3CAILAOY · pith_short_8: UWXPBCYP

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/UWXPBCYP3CAILAOYUS5EY7UQFJ \
  | 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: a5aef08b0fd8808581d8a4ba4c7e902a58e2fb104367825570713e243bfdabca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7f1ade71014e7e4844537d6bc8a986086eabc9af9b6bc1049244d9facd5a6e8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-26T22:06:25Z",
    "title_canon_sha256": "4a3d88765aa6ec9fe35213be61cb240d3c5b6fdac29833bcbb78d21b5116da3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110581",
    "kind": "arxiv",
    "version": 1
  }
}