Pith Number

pith:K6WI4V5Q

pith:2012:K6WI4V5QJ237XDIOTCCXQ7NMJU

not attested not anchored not stored refs pending

Local Tadpole Galaxies

(2) IBM Research, (3) Instituto de Astrofisica de Canarias, 4), (4) Middlebury College), Bruce G. Elmegreen (2), Casiana Munoz-Tunon (3), Debra Meloy Elmegreen (1), Janosz Dewberry (1) ((1) Vassar College, Jorge Sanchez Almeida (3), Joseph Putko (1

arxiv:1203.2486 v1 · 2012-03-12 · 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{K6WI4V5QJ237XDIOTCCXQ7NMJU}

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	2026-05-18T01:58:10.009604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57ac8e57b04eb7fb8d0e9885787dac4d0307c485877ec81725c06080907f804c

Aliases

arxiv: 1203.2486 · arxiv_version: 1203.2486v1 · doi: 10.48550/arxiv.1203.2486 · pith_short_12: K6WI4V5QJ237 · pith_short_16: K6WI4V5QJ237XDIO · pith_short_8: K6WI4V5Q

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/K6WI4V5QJ237XDIOTCCXQ7NMJU \
  | 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: 57ac8e57b04eb7fb8d0e9885787dac4d0307c485877ec81725c06080907f804c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9df1dabe47129fdfca66180752f8e6847b05a7b497623972d6f92d445eb333aa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-12T13:33:23Z",
    "title_canon_sha256": "e4b1138748d58a34426e9c8d86815d39e8faf529f7c4cdbb077789980ec6c70e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2486",
    "kind": "arxiv",
    "version": 1
  }
}