Pith Number

pith:Z4O5BPQB

pith:2015:Z4O5BPQBLNVSRWFPS6MLNYV3F5

not attested not anchored not stored refs pending

From Group Recommendations to Group Formation

Laks V. S. Lakshmanan, Rui Liu, Senjuti Basu Roy

arxiv:1503.03753 v1 · 2015-03-11 · cs.IR · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4O5BPQBLNVSRWFPS6MLNYV3F5}

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	2026-05-18T02:24:27.436934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf1dd0be015b6b28d8af9798b6e2bb2f630f021f0f2cad9637a7b4d5e9da9b58

Aliases

arxiv: 1503.03753 · arxiv_version: 1503.03753v1 · doi: 10.48550/arxiv.1503.03753 · pith_short_12: Z4O5BPQBLNVS · pith_short_16: Z4O5BPQBLNVSRWFP · pith_short_8: Z4O5BPQB

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/Z4O5BPQBLNVSRWFPS6MLNYV3F5 \
  | 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: cf1dd0be015b6b28d8af9798b6e2bb2f630f021f0f2cad9637a7b4d5e9da9b58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f41d583939f8a4e87e3ab4ea8599c08c2de64a0588f2ff81ebda41b05d9bd51",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-03-11T17:34:43Z",
    "title_canon_sha256": "c6713d92d1b4e17700a354ed945a7ccd1ce9c6534049f33813a5ccb9d61d0a95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03753",
    "kind": "arxiv",
    "version": 1
  }
}