Pith Number

pith:E4XVMDR5

pith:2018:E4XVMDR5KBAVT2KOBDE7PFRXZF

not attested not anchored not stored refs pending

Deriving item features relevance from collaborative domain knowledge

Alberto Gasparin, Maurizio Ferrari Dacrema, Paolo Cremonesi

arxiv:1811.01905 v1 · 2018-11-05 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4XVMDR5KBAVT2KOBDE7PFRXZF}

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	2026-05-17T23:40:55.749329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

272f560e3d504159e94e08c9f79637c96df3819d247a2b2313859258a1395fb0

Aliases

arxiv: 1811.01905 · arxiv_version: 1811.01905v1 · doi: 10.48550/arxiv.1811.01905 · pith_short_12: E4XVMDR5KBAV · pith_short_16: E4XVMDR5KBAVT2KO · pith_short_8: E4XVMDR5

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/E4XVMDR5KBAVT2KOBDE7PFRXZF \
  | 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: 272f560e3d504159e94e08c9f79637c96df3819d247a2b2313859258a1395fb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "308bfde6099dc629f3b46b5bb5e4a789d64496ca8139f5671adf93dfb62a0c0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-11-05T18:33:00Z",
    "title_canon_sha256": "d1269f4e04e69d49d48176a281c275c28d68d226b2b688c9acdc40ddfa8490f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.01905",
    "kind": "arxiv",
    "version": 1
  }
}