Pith Number

pith:AZMS2U53

pith:2015:AZMS2U53DY7UPDJGSXQL7RJT7V

not attested not anchored not stored refs pending

A Feature-based Classification of Model Repair Approaches

Alcino Cunha, Nuno Macedo, Tiago Jorge

arxiv:1504.03947 v1 · 2015-04-15 · 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{AZMS2U53DY7UPDJGSXQL7RJT7V}

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	2026-05-18T00:58:55.589946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06592d53bb1e3f478d2695e0bfc533fd4a8b6af7b07694ef03d1599bd7d7dfa7

Aliases

arxiv: 1504.03947 · arxiv_version: 1504.03947v1 · doi: 10.48550/arxiv.1504.03947 · pith_short_12: AZMS2U53DY7U · pith_short_16: AZMS2U53DY7UPDJG · pith_short_8: AZMS2U53

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/AZMS2U53DY7UPDJGSXQL7RJT7V \
  | 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: 06592d53bb1e3f478d2695e0bfc533fd4a8b6af7b07694ef03d1599bd7d7dfa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0306313d288912e5da66d7483e07100604e6fc417e8ef8578578590008933dae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2015-04-15T15:37:19Z",
    "title_canon_sha256": "32a48d50c28b6c7c44a41a88747b3b5beeaa8927dbb2714116f676ea0d5f1ddd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03947",
    "kind": "arxiv",
    "version": 1
  }
}