Pith Number

pith:4OTNLY7Z

pith:2017:4OTNLY7ZSK7JDPREHDMIS7TMJO

not attested not anchored not stored refs pending

An Activity-Based Quality Model for Maintainability

Florian Deissenboeck, Jean-Fran\c{c}ois Girard, Markus Pizka, Stefan Teuchert, Stefan Wagner

arxiv:1707.08341 v1 · 2017-07-26 · 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{4OTNLY7ZSK7JDPREHDMIS7TMJO}

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	2026-05-18T00:39:24.517199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3a6d5e3f992be91be2438d8897e6c4ba7766ab61a986ec14456f750226b62dd

Aliases

arxiv: 1707.08341 · arxiv_version: 1707.08341v1 · doi: 10.48550/arxiv.1707.08341 · pith_short_12: 4OTNLY7ZSK7J · pith_short_16: 4OTNLY7ZSK7JDPRE · pith_short_8: 4OTNLY7Z

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/4OTNLY7ZSK7JDPREHDMIS7TMJO \
  | 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: e3a6d5e3f992be91be2438d8897e6c4ba7766ab61a986ec14456f750226b62dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "899e9e4e913ba910743b3154387437a3bb1df0687d5edeb7f7b614ed9c76adb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2017-07-26T09:48:25Z",
    "title_canon_sha256": "20802acbb170e3a34c71adae89674971ad79e60db7774599180cdd04e81a89b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08341",
    "kind": "arxiv",
    "version": 1
  }
}