Pith Number

pith:NIFUYZS3

pith:2022:NIFUYZS34HSLN7R3PJTGDFGQTB

not attested not anchored not stored refs pending

FastKASSIM: A Fast Tree Kernel-Based Syntactic Similarity Metric

Caitlyn Chen, Maximillian Chen, Xiao Yu, Zhou Yu

arxiv:2203.08299 v4 · 2022-03-15 · 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{NIFUYZS34HSLN7R3PJTGDFGQTB}

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	2026-07-05T05:36:15.954333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a0b4c665be1e4b6fe3b7a666194d0984c07a52847dd429372339a4ba837a01f

Aliases

arxiv: 2203.08299 · arxiv_version: 2203.08299v4 · doi: 10.48550/arxiv.2203.08299 · pith_short_12: NIFUYZS34HSL · pith_short_16: NIFUYZS34HSLN7R3 · pith_short_8: NIFUYZS3

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/NIFUYZS34HSLN7R3PJTGDFGQTB \
  | 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: 6a0b4c665be1e4b6fe3b7a666194d0984c07a52847dd429372339a4ba837a01f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "395d9627fa382051c1bb109d5915ff3db6a12384c72ccf4ba82056ee983c2fb7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-03-15T22:33:26Z",
    "title_canon_sha256": "057921553d17cd555a44ae0f50cd49815a7f7b0866d5d2c596f4821edd93ca29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.08299",
    "kind": "arxiv",
    "version": 4
  }
}