Pith Number

pith:5MQCWGV5

pith:2026:5MQCWGV5UD27TML62G3J2WBJE3

not attested not anchored not stored refs pending

PERFOPT-Bench: Evaluating Coding Agents on Software Performance Optimization

Bo Liu, Jiawei Ma, Liangliang Cao, Piaohong Wang, Yingyun Cui, Yi Xie

arxiv:2607.07744 v1 · 2026-07-08 · 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{5MQCWGV5UD27TML62G3J2WBJE3}

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	2026-07-10T00:18:47.687220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb202b1abda0f5f9b17ed1b69d582926d796212fea93c56d899fe4f162b7fc98

Aliases

arxiv: 2607.07744 · arxiv_version: 2607.07744v1 · doi: 10.48550/arxiv.2607.07744 · pith_short_12: 5MQCWGV5UD27 · pith_short_16: 5MQCWGV5UD27TML6 · pith_short_8: 5MQCWGV5

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/5MQCWGV5UD27TML62G3J2WBJE3 \
  | 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: eb202b1abda0f5f9b17ed1b69d582926d796212fea93c56d899fe4f162b7fc98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f87facfcd23a6ef31745dde50cbc8cbad0c96f2fc3ac933c9ac73a8a3809aec",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-07-08T08:32:18Z",
    "title_canon_sha256": "ca6bbe20c758dd3a8854c2584e875c708d362d0e53f497c7a121098b284165d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.07744",
    "kind": "arxiv",
    "version": 1
  }
}