Pith Number

pith:OSIZBKGW

pith:2026:OSIZBKGWD6K5JUXZAQUMBITY55

not attested not anchored not stored refs pending

ZifaMem: Structured Memory for Persona, Preference, and Emotional Continuity in AI Companions

Guozhi Xu, Jingzhe Fang, Xiaochen Yang, Yunfan Cui, Zhangyu Hua

arxiv:2607.17564 v1 · 2026-07-20 · 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{OSIZBKGWD6K5JUXZAQUMBITY55}

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	2026-07-21T01:21:52.464348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

749190a8d61f95d4d2f90428c0a278ef44e83d9b2dd718bc3f86605c422534a7

Aliases

arxiv: 2607.17564 · arxiv_version: 2607.17564v1 · doi: 10.48550/arxiv.2607.17564 · pith_short_12: OSIZBKGWD6K5 · pith_short_16: OSIZBKGWD6K5JUXZ · pith_short_8: OSIZBKGW

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/OSIZBKGWD6K5JUXZAQUMBITY55 \
  | 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: 749190a8d61f95d4d2f90428c0a278ef44e83d9b2dd718bc3f86605c422534a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c870b9c450920affa7e337a699c75c41d7e74246185c3787f386df1dcb3934dd",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-20T05:18:40Z",
    "title_canon_sha256": "fd7b0cf34a206419b24beb516c6c1409a7ec5087edc506197b8518bf9bc80277"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.17564",
    "kind": "arxiv",
    "version": 1
  }
}