Pith Number

pith:4Q5YCNSX

pith:2026:4Q5YCNSXYEZWK2G7EOH6ZJVI2Y

not attested not anchored not stored refs pending

Project-wise Comparison of Software Birthmarks Using Weighted Partial Similarity

Akito Monden, Haruaki Tamada, Hiroki Inayoshi, Masateru Tsunoda, Nikolay Fedorov

arxiv:2606.25418 v1 · 2026-06-24 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Q5YCNSXYEZWK2G7EOH6ZJVI2Y}

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	2026-06-25T01:18:04.887175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e43b813657c1336568df238feca6a8d6352f2647adad04d6a0699cac8bd44f67

Aliases

arxiv: 2606.25418 · arxiv_version: 2606.25418v1 · doi: 10.48550/arxiv.2606.25418 · pith_short_12: 4Q5YCNSXYEZW · pith_short_16: 4Q5YCNSXYEZWK2G7 · pith_short_8: 4Q5YCNSX

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/4Q5YCNSXYEZWK2G7EOH6ZJVI2Y \
  | 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: e43b813657c1336568df238feca6a8d6352f2647adad04d6a0699cac8bd44f67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dcb1ab866cb08799fdeda8fb5dee656a9d54ec36a4fb12d2fe8415f321bca88",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-06-24T05:26:49Z",
    "title_canon_sha256": "af91a370c036a67fca71c2a92853155eb81a84e782c6db3c11c43f2660d7c4a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25418",
    "kind": "arxiv",
    "version": 1
  }
}