Pith Number

pith:4XMK5KQI

pith:2012:4XMK5KQIMD4NLYWFWKARKHXFZ2

not attested not anchored not stored refs pending

Galaxy Zoo: Quantifying Morphological Indicators of Galaxy Interaction

Arfon M. Smith, Chris J. Lintott, Karen L. Masters, Kevin R. V. Casteels, Kevin Schawinski, Ramin A. Skibba, Robert C. Nichol, Steven P. Bamford, William C. Keel

arxiv:1206.5020 v2 · 2012-06-21 · 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{4XMK5KQIMD4NLYWFWKARKHXFZ2}

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	2026-05-18T01:56:43.458458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5d8aeaa0860f8d5e2c5b281151ee5ce9c89580611e984157e743aa5ba47bfc1

Aliases

arxiv: 1206.5020 · arxiv_version: 1206.5020v2 · doi: 10.48550/arxiv.1206.5020 · pith_short_12: 4XMK5KQIMD4N · pith_short_16: 4XMK5KQIMD4NLYWF · pith_short_8: 4XMK5KQI

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/4XMK5KQIMD4NLYWFWKARKHXFZ2 \
  | 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: e5d8aeaa0860f8d5e2c5b281151ee5ce9c89580611e984157e743aa5ba47bfc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "171c2a0383f64f13a7dd11eb42d3c61771d7f96015e4767dd7da411823e4b396",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-06-21T21:39:25Z",
    "title_canon_sha256": "b2abfd8c014774caf74d0c875b7af35449ce7051fc8975bc82d3746aca8f6c4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.5020",
    "kind": "arxiv",
    "version": 2
  }
}