Pith Number

pith:7Z2SW2X2

pith:2026:7Z2SW2X2K43X2B3GQJLRTFQXXB

not attested not anchored not stored refs pending

EPC: A Standardized Protocol for Measuring Evaluator Preference Dynamics in LLM Agent Systems

Zewen Liu

arxiv:2607.00297 v1 · 2026-07-01 · cs.LG · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Z2SW2X2K43X2B3GQJLRTFQXXB}

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	2026-07-02T00:18:43.598037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe752b6afa57377d07668257199617b87b64db9f14a9c0572c3945635fb32658

Aliases

arxiv: 2607.00297 · arxiv_version: 2607.00297v1 · doi: 10.48550/arxiv.2607.00297 · pith_short_12: 7Z2SW2X2K43X · pith_short_16: 7Z2SW2X2K43X2B3G · pith_short_8: 7Z2SW2X2

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/7Z2SW2X2K43X2B3GQJLRTFQXXB \
  | 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: fe752b6afa57377d07668257199617b87b64db9f14a9c0572c3945635fb32658

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50da3bbec4abfc81552dd4d2446a0c3644863ade444cffdcb5e17cd467d4dcd5",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-01T00:49:47Z",
    "title_canon_sha256": "fcbb4ccaf50530c6b3a9713f16593b0bc0d5e9de8cee33b5f5ad354b62231ca9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.00297",
    "kind": "arxiv",
    "version": 1
  }
}