Pith Number

pith:GYXRWSMJ

pith:2026:GYXRWSMJUUAG5PT5GSC4W2ZQG2

not attested not anchored not stored refs pending

LoRA Scaffolded Policy Optimization (LSPO): A Sampling-Time Low-Rank Scaffold for Recovering Reinforcement-Learning Gradient on Zero-Reward Cliff Prompts

Ken Ding

arxiv:2607.27787 v1 · 2026-07-30 · cs.LG · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GYXRWSMJUUAG5PT5GSC4W2ZQG2}

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	2026-07-31T01:30:47.366553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

362f1b4989a5006ebe7d3485cb6b3036b7d6140c59c5746def047fd20a8a18d6

Aliases

arxiv: 2607.27787 · arxiv_version: 2607.27787v1 · doi: 10.48550/arxiv.2607.27787 · pith_short_12: GYXRWSMJUUAG · pith_short_16: GYXRWSMJUUAG5PT5 · pith_short_8: GYXRWSMJ

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/GYXRWSMJUUAG5PT5GSC4W2ZQG2 \
  | 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: 362f1b4989a5006ebe7d3485cb6b3036b7d6140c59c5746def047fd20a8a18d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f09e06b9ad0b6ab2481dac3c09ebec1664b3836fc305fe877800d42f8212bea7",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-30T07:21:34Z",
    "title_canon_sha256": "63695f9a24abcacaf3b088ffc8da7302f2c99f770fda9e9ca152ca7c8ab4cc1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.27787",
    "kind": "arxiv",
    "version": 1
  }
}