Pith Number

pith:5TIS623F

pith:2026:5TIS623F4VPSNCVHK54Y54275S

not attested not anchored not stored refs pending

Preference Tuning as Spectral Update Reorganization

Haibo Jin, Haohan Wang, Liying Kang, Peiyan Zhang

arxiv:2607.20438 v1 · 2026-05-12 · cs.CL · cs.AI · 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{5TIS623F4VPSNCVHK54Y54275S}

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	2026-07-24T00:23:15.471335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecd12f6b65e55f268aa757798ef35fecafd660b2172b7825d881c043407d3e1a

Aliases

arxiv: 2607.20438 · arxiv_version: 2607.20438v1 · doi: 10.48550/arxiv.2607.20438 · pith_short_12: 5TIS623F4VPS · pith_short_16: 5TIS623F4VPSNCVH · pith_short_8: 5TIS623F

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/5TIS623F4VPSNCVHK54Y54275S \
  | 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: ecd12f6b65e55f268aa757798ef35fecafd660b2172b7825d881c043407d3e1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "082cc3db022c702a1a331fe013e92e7af32f23c6667d37105fe4e08005536d50",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-12T01:46:10Z",
    "title_canon_sha256": "ec75fa547a230d210cbd6fdcd769d0fa350d7317f7efa5b02960b4239fb18265"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20438",
    "kind": "arxiv",
    "version": 1
  }
}