Pith Number

pith:6U3ZQXKN

pith:2026:6U3ZQXKNDFSVWQUPU2TIPTPMNT

not attested not anchored not stored refs pending

Distributed Direct Preference Optimization

Zhanhong Jiang

arxiv:2605.20696 v1 · 2026-05-20 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6U3ZQXKNDFSVWQUPU2TIPTPMNT}

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	2026-05-21T01:04:49.639276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f537985d4d19655b428fa6a687cdec6cfe69bde77ee824f9d3b8838341ba92aa

Aliases

arxiv: 2605.20696 · arxiv_version: 2605.20696v1 · doi: 10.48550/arxiv.2605.20696 · pith_short_12: 6U3ZQXKNDFSV · pith_short_16: 6U3ZQXKNDFSVWQUP · pith_short_8: 6U3ZQXKN

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/6U3ZQXKNDFSVWQUPU2TIPTPMNT \
  | 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: f537985d4d19655b428fa6a687cdec6cfe69bde77ee824f9d3b8838341ba92aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d24c33cc2d3103da92976009350d66dc4e05244a524d1f2845e90291e4dcd64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-20T04:49:13Z",
    "title_canon_sha256": "e30525dbd5448195b85e24a123220a721993728153fac6b2000caeb53c19bbe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20696",
    "kind": "arxiv",
    "version": 1
  }
}