Pith Number

pith:ACTLMQ6F

pith:2013:ACTLMQ6FRW7E5VV4FBYHADSVY5

not attested not anchored not stored refs pending

Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey

(10) Johns Hopkins University, (11) ETH Zurich, (12) University of California San Diego), (2) University of Oxford, 3), (3) Adler Planetarium, (4) University of Nottingham, (5) University of Portsmouth, 6), 6) ((1) University of Minnesota, (6) SEPnet, (7) Universitat de Barcelona, 8), (8) University of Hertfordshire, (9) University of Alabama, Arfon M. Smith (3), Brooke D. Simmons (2), Chris J. Lintott (2, Daniel Thomas (5, Edward M. Edmondson (5), Karen L. Masters (5, Kevin R.V. Casteels (7), Kevin Schawinski (11), Kyle W. Willett (1), Lucy F. Fortson (1), M. Jordan Raddick (10), Ramin A. Skibba (12), Robert C. Nichol (5, Robert J. Simpson (2), Steven P. Bamford (4), Sugata Kaviraj (2, Thomas Melvin (5), William C. Keel (9)

arxiv:1308.3496 v2 · 2013-08-15 · 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{ACTLMQ6FRW7E5VV4FBYHADSVY5}

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	2026-05-18T01:48:14.907964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00a6b643c58dbe4ed6bc2870700e55c7562cc9b4f7797f09c03d9cc2a89ab902

Aliases

arxiv: 1308.3496 · arxiv_version: 1308.3496v2 · doi: 10.48550/arxiv.1308.3496 · pith_short_12: ACTLMQ6FRW7E · pith_short_16: ACTLMQ6FRW7E5VV4 · pith_short_8: ACTLMQ6F

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/ACTLMQ6FRW7E5VV4FBYHADSVY5 \
  | 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: 00a6b643c58dbe4ed6bc2870700e55c7562cc9b4f7797f09c03d9cc2a89ab902

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89698f52af576e2e70785ceee6f8ce537db15e1a87067e0859ac7246c479856d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-15T20:00:06Z",
    "title_canon_sha256": "77e7a18af17395ba8aec8c6e656799410b4b0ed535abc59b42d74a862441a827"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3496",
    "kind": "arxiv",
    "version": 2
  }
}