Pith Number

pith:NS7GDSC3

pith:2012:NS7GDSC3GA3FILLOF3JJC3XQT5

not attested not anchored not stored refs pending

Four Conceptions of Instruction Sequence Faults

Jan A. Bergstra

arxiv:1204.1881 v1 · 2012-04-09 · 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{NS7GDSC3GA3FILLOF3JJC3XQT5}

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	2026-05-18T03:58:14.821559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cbe61c85b3036542d6e2ed2916ef09f781f40a459ac362f6f7e86756d1cc36f

Aliases

arxiv: 1204.1881 · arxiv_version: 1204.1881v1 · doi: 10.48550/arxiv.1204.1881 · pith_short_12: NS7GDSC3GA3F · pith_short_16: NS7GDSC3GA3FILLO · pith_short_8: NS7GDSC3

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/NS7GDSC3GA3FILLOF3JJC3XQT5 \
  | 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: 6cbe61c85b3036542d6e2ed2916ef09f781f40a459ac362f6f7e86756d1cc36f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d89d2316a0316e502ef560b962d71fb00040604b85131d27a33e4de7fa22ac6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2012-04-09T14:05:02Z",
    "title_canon_sha256": "e6e42f055d2a3bb423c3960725dd759e5432c2766f1bf19d0c763acf47d56a1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1881",
    "kind": "arxiv",
    "version": 1
  }
}