Pith Number

pith:HV6X4X3Z

pith:2013:HV6X4X3ZXGQTSNA5NRGOGHTN36

not attested not anchored not stored refs pending

Groups of two galaxies in SDSS: implications of colours on star formation quenching time-scales

Andrew R. Zentner, Christopher Q. Trinh, Elizabeth J. Barton, James S. Bullock, Michael C. Cooper, Risa H. Wechsler

arxiv:1301.5870 v2 · 2013-01-24 · 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{HV6X4X3ZXGQTSNA5NRGOGHTN36}

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	2026-05-18T03:11:59.237781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d7d7e5f79b9a139341d6c4ce31e6ddf9b42f844643f815c532dbcc95b062f5f

Aliases

arxiv: 1301.5870 · arxiv_version: 1301.5870v2 · doi: 10.48550/arxiv.1301.5870 · pith_short_12: HV6X4X3ZXGQT · pith_short_16: HV6X4X3ZXGQTSNA5 · pith_short_8: HV6X4X3Z

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/HV6X4X3ZXGQTSNA5NRGOGHTN36 \
  | 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: 3d7d7e5f79b9a139341d6c4ce31e6ddf9b42f844643f815c532dbcc95b062f5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0111b5764fd30b4f6523c4ff64f4854d3450c1ac24b7061149e9254b476d2ef7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-24T19:21:13Z",
    "title_canon_sha256": "81343af6d6467c5621f01a6edf3ce4eae73f54ba7ac0ed94954e39d8b3307121"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5870",
    "kind": "arxiv",
    "version": 2
  }
}