Pith Number

pith:2CH7UX2C

pith:2010:2CH7UX2CLBA7OGBNTAEIJLFFJJ

not attested not anchored not stored refs pending

Ontological Matchmaking in Recommender Systems

Angela Bonifati, Domenica Sileo, Giansalvatore Mecca, Gianvito Summa

arxiv:1010.2148 v1 · 2010-10-11 · 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{2CH7UX2CLBA7OGBNTAEIJLFFJJ}

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	2026-05-18T02:23:46.054106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d08ffa5f425841f7182d980884aca54a7611d3026f3399eb8809c5f968ccc3fb

Aliases

arxiv: 1010.2148 · arxiv_version: 1010.2148v1 · doi: 10.48550/arxiv.1010.2148 · pith_short_12: 2CH7UX2CLBA7 · pith_short_16: 2CH7UX2CLBA7OGBN · pith_short_8: 2CH7UX2C

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/2CH7UX2CLBA7OGBNTAEIJLFFJJ \
  | 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: d08ffa5f425841f7182d980884aca54a7611d3026f3399eb8809c5f968ccc3fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ceabc4003ac2d9a65c1aa67a0e9b2f2374d89068e44eb3991fc1b5550aa4539",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2010-10-11T16:22:43Z",
    "title_canon_sha256": "3363b5cf994a63640df53cdddcc9773c781719c4b6607ec81d4f595a6772e20a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.2148",
    "kind": "arxiv",
    "version": 1
  }
}