Pith Number

pith:U7FWYZVE

pith:2018:U7FWYZVELZXRMGSJXPHF3ITYEB

not attested not anchored not stored refs pending

Parameter-free Sentence Embedding via Orthogonal Basis

Chenguang Zhu, Weizhu Chen, Ziyi Yang

arxiv:1810.00438 v2 · 2018-09-30 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7FWYZVELZXRMGSJXPHF3ITYEB}

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	2026-07-05T00:24:25.323205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7cb6c66a45e6f161a49bbce5da27820730cc6797c05234028d3cb082dbfefdd

Aliases

arxiv: 1810.00438 · arxiv_version: 1810.00438v2 · doi: 10.48550/arxiv.1810.00438 · pith_short_12: U7FWYZVELZXR · pith_short_16: U7FWYZVELZXRMGSJ · pith_short_8: U7FWYZVE

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/U7FWYZVELZXRMGSJXPHF3ITYEB \
  | 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: a7cb6c66a45e6f161a49bbce5da27820730cc6797c05234028d3cb082dbfefdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ea41c6e478761abdf9a32d28536e5f5d45b6f5ee5015be6d6d2374f37c7e384",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-09-30T18:26:30Z",
    "title_canon_sha256": "c0424d68b695d84776ec998aead87f8f1cd7731e7a3159a4728fa24247a1c925"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00438",
    "kind": "arxiv",
    "version": 2
  }
}