Pith Number

pith:ZA6G4CJ4

pith:2012:ZA6G4CJ43AEJBY7QYJZIXTCGDZ

not attested not anchored not stored refs pending

Galaxy Zoo: Bulgeless Galaxies With Growing Black Holes

A. Han, B. D. Simmons, C. Lintott, C. M. Urry, E. C. Moran, K. L. Masters, K. Schawinski, K. W. Willett, R. C. Nichol, S. Kaviraj, S. P. Bamford

arxiv:1207.4190 v2 · 2012-07-17 · 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{ZA6G4CJ43AEJBY7QYJZIXTCGDZ}

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	2026-05-18T01:56:17.193540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c83c6e093cd80890e3f0c2728bcc461e7b50c6f34793c8b5eb3f4d2b658013c0

Aliases

arxiv: 1207.4190 · arxiv_version: 1207.4190v2 · doi: 10.48550/arxiv.1207.4190 · pith_short_12: ZA6G4CJ43AEJ · pith_short_16: ZA6G4CJ43AEJBY7Q · pith_short_8: ZA6G4CJ4

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/ZA6G4CJ43AEJBY7QYJZIXTCGDZ \
  | 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: c83c6e093cd80890e3f0c2728bcc461e7b50c6f34793c8b5eb3f4d2b658013c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74a8d7b992535b4f78fa129ddaeb218917c7859f99ff5c1707d637a91cdc5bbd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-17T20:00:03Z",
    "title_canon_sha256": "8aae2f56bce3ad86e2b18d795c2706303dbab2b1da05cb0b9e2f211a40c7cf4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4190",
    "kind": "arxiv",
    "version": 2
  }
}