Pith Number

pith:ZPISJJ27

pith:2018:ZPISJJ27ADM4FO7B2MOFNXYXVG

not attested not anchored not stored refs pending

Towards a Theory of Software Development Expertise

Sebastian Baltes, Stephan Diehl

arxiv:1807.06087 v4 · 2018-07-16 · 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{ZPISJJ27ADM4FO7B2MOFNXYXVG}

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	2026-05-18T00:01:38.032151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbd124a75f00d9c2bbe1d31c56df17a997f521af33053b32bafbf8dc5fb1fe5f

Aliases

arxiv: 1807.06087 · arxiv_version: 1807.06087v4 · doi: 10.48550/arxiv.1807.06087 · pith_short_12: ZPISJJ27ADM4 · pith_short_16: ZPISJJ27ADM4FO7B · pith_short_8: ZPISJJ27

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/ZPISJJ27ADM4FO7B2MOFNXYXVG \
  | 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: cbd124a75f00d9c2bbe1d31c56df17a997f521af33053b32bafbf8dc5fb1fe5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb112dd095f888c4baaa5bd1c727857a29675a9ac1609e1235c0f7c33a405df9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2018-07-16T20:09:25Z",
    "title_canon_sha256": "b4e324df37ecee72a69e2e90131ee4d1c6560a5bf07582f4edde9794b58b8eee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06087",
    "kind": "arxiv",
    "version": 4
  }
}