Pith Number

pith:U2SDXGCQ

pith:2021:U2SDXGCQQSUHRBRU4CDU43YKJF

not attested not anchored not stored refs pending

The Probabilistic Random Forest applied to the selection of quasar candidates in the QUBRICS Survey

Andrea Grazian, Fabio Fontanot, Francesco Guarneri, Giorgio Calderone, Guido Cupani, Konstantina Boutsia, Stefano Cristiani, Valentina D'Odorico

arxiv:2106.12990 v1 · 2021-06-24 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2SDXGCQQSUHRBRU4CDU43YKJF}

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	2026-07-05T02:57:24.475670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a43b985084a8788634e0874e6f0a497eac8cd2d3bdafd1b74396e7708a4547

Aliases

arxiv: 2106.12990 · arxiv_version: 2106.12990v1 · doi: 10.48550/arxiv.2106.12990 · pith_short_12: U2SDXGCQQSUH · pith_short_16: U2SDXGCQQSUHRBRU · pith_short_8: U2SDXGCQ

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/U2SDXGCQQSUHRBRU4CDU43YKJF \
  | 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: a6a43b985084a8788634e0874e6f0a497eac8cd2d3bdafd1b74396e7708a4547

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc8bb7fc79e2d1e7a1f8104cede0f850a2921fb931fd99eba8295cb23c5a5f52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-06-24T13:05:26Z",
    "title_canon_sha256": "5916b40a325b3c2c3b6b6935d9446795bac92c79b6f312580b56f4c984812769"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.12990",
    "kind": "arxiv",
    "version": 1
  }
}