Pith Number

pith:7WH4LKBM

pith:2026:7WH4LKBMPEWSBDUJQHADZM2RB6

not attested not anchored not stored refs pending

Private Direct Preference Optimization for LLM Alignment

Bolin Ding, Ergute Bao, Fei Wei, Xiaokui Xiao, Yaliang Li, YangFan Jiang

arxiv:2608.05040 v1 · 2026-08-05 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WH4LKBMPEWSBDUJQHADZM2RB6}

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	2026-08-06T01:48:05.704483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd8fc5a82c792d208e8981c03cb3510f8fd1a43def4b81f929f5b07741544927

Aliases

arxiv: 2608.05040 · arxiv_version: 2608.05040v1 · doi: 10.48550/arxiv.2608.05040 · pith_short_12: 7WH4LKBMPEWS · pith_short_16: 7WH4LKBMPEWSBDUJ · pith_short_8: 7WH4LKBM

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/7WH4LKBMPEWSBDUJQHADZM2RB6 \
  | 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: fd8fc5a82c792d208e8981c03cb3510f8fd1a43def4b81f929f5b07741544927

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6a17ffe4d1b5ec2a1fdafa7fef4a4c76b74cce48f8a15f09da71e473b9488ff",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-08-05T16:51:02Z",
    "title_canon_sha256": "7114c2e0f6fa89893bfd5254d8fbc108c7638d054999a566c8ca611ea81f92cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.05040",
    "kind": "arxiv",
    "version": 1
  }
}