Pith Number

pith:XFX5NIVB

pith:2026:XFX5NIVBOWUDA6RIH7OYIVPBQC

not attested not anchored not stored refs pending

Towards Knowledge Alignment in Code LLMs: Contrastive Unlearning for Evolving APIs

Anh H. D. Nguyen, Anh M. T. Bui, Anh N. H. Vu, Dang H. Vu, Huy Q. Tran, Phuong T. Nguyen, Tuyen N. Dinh

arxiv:2606.30810 v1 · 2026-06-29 · 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{XFX5NIVBOWUDA6RIH7OYIVPBQC}

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	2026-07-01T00:17:18.231397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b96fd6a2a175a8307a283fdd8455e18094e468091f865eb0c3120c8e311ad794

Aliases

arxiv: 2606.30810 · arxiv_version: 2606.30810v1 · doi: 10.48550/arxiv.2606.30810 · pith_short_12: XFX5NIVBOWUD · pith_short_16: XFX5NIVBOWUDA6RI · pith_short_8: XFX5NIVB

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/XFX5NIVBOWUDA6RIH7OYIVPBQC \
  | 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: b96fd6a2a175a8307a283fdd8455e18094e468091f865eb0c3120c8e311ad794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ec3e986d5bdfa36d24222263c0c994777eda31b49cec1c9585699e328a7b149",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-06-29T18:34:55Z",
    "title_canon_sha256": "953f9341d87cad942b2557fc6782efa6de671325609381598acf8f4fa5769baa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.30810",
    "kind": "arxiv",
    "version": 1
  }
}