Pith Number

pith:ZFJBYRGN

pith:2016:ZFJBYRGNN6HBU2BRXHPBIZLQLQ

not attested not anchored not stored refs pending

A Proposal for the Measurement and Documentation of Research Software Sustainability in Interactive Metadata Repositories

Stephan Druskat

arxiv:1608.04529 v2 · 2016-08-16 · cs.SE · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZFJBYRGNN6HBU2BRXHPBIZLQLQ}

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	2026-05-18T01:08:33.757827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9521c44cd6f8e1a6831b9de1465705c3352a2eba58bfae1dfe5b70635a1419b

Aliases

arxiv: 1608.04529 · arxiv_version: 1608.04529v2 · doi: 10.48550/arxiv.1608.04529 · pith_short_12: ZFJBYRGNN6HB · pith_short_16: ZFJBYRGNN6HBU2BR · pith_short_8: ZFJBYRGN

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/ZFJBYRGNN6HBU2BRXHPBIZLQLQ \
  | 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: c9521c44cd6f8e1a6831b9de1465705c3352a2eba58bfae1dfe5b70635a1419b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccc6145331347954891a495e3260af4bdf458a2fe9c623b9d8c35a66ac4556d0",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2016-08-16T09:41:23Z",
    "title_canon_sha256": "bdc11c2acbba482e28d41439c6c52d49b37e8e1b577fbd00c0c757a48008fa9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.04529",
    "kind": "arxiv",
    "version": 2
  }
}