Pith Number

pith:MEACKTP2

pith:2011:MEACKTP2UWVNDIJIFAZU2SDTGX

not attested not anchored not stored refs pending

Angular and spatial clustering of photometrically classified quasar candidates from SDSS NBCKDE

A. V. Tugay, G. Ivashchenko, O. Vasylenko

arxiv:1112.6030 v2 · 2011-12-27 · 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{MEACKTP2UWVNDIJIFAZU2SDTGX}

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	2026-05-18T02:21:26.903824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6100254dfaa5aad1a12828334d487335f8329011b674cc3421cc465e9353ce8d

Aliases

arxiv: 1112.6030 · arxiv_version: 1112.6030v2 · doi: 10.48550/arxiv.1112.6030 · pith_short_12: MEACKTP2UWVN · pith_short_16: MEACKTP2UWVNDIJI · pith_short_8: MEACKTP2

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/MEACKTP2UWVNDIJIFAZU2SDTGX \
  | 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: 6100254dfaa5aad1a12828334d487335f8329011b674cc3421cc465e9353ce8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d235010856e3661b4a058a68b2a6aead00be7b6defc0db935ee6ef3dd76a1bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-27T22:54:00Z",
    "title_canon_sha256": "79c14c85888ce4dfb4f01bf1e1e09a1b8450ae82e43c00aacc635162d63e5832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.6030",
    "kind": "arxiv",
    "version": 2
  }
}