Pith Number

pith:DLYA54WX

pith:2026:DLYA54WX36RCPNLHTAUDQOIDIF

not attested not anchored not stored refs pending

Best Friends, Not Forever: Evaluating Long-Horizon Persona Collapse and Behavioral Drift in AI Companions

Akshara Prabhakar, Chien-Sheng Wu, Daniel Lee, Pranav Narayanan Venkit, Yu Li

arxiv:2607.28818 v1 · 2026-07-30 · cs.AI · 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{DLYA54WX36RCPNLHTAUDQOIDIF}

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	2026-08-03T00:13:07.862067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1af00ef2d7dfa227b567982838390341579772e82a1c6a5ca139bcff594351a2

Aliases

arxiv: 2607.28818 · arxiv_version: 2607.28818v1 · doi: 10.48550/arxiv.2607.28818 · pith_short_12: DLYA54WX36RC · pith_short_16: DLYA54WX36RCPNLH · pith_short_8: DLYA54WX

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/DLYA54WX36RCPNLHTAUDQOIDIF \
  | 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: 1af00ef2d7dfa227b567982838390341579772e82a1c6a5ca139bcff594351a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ea6d9149d93d866b4b09274874f71bbeed9b443de4539240817d42484273b89",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-30T20:18:39Z",
    "title_canon_sha256": "9aefa1713813c201ecd22530afb1dea245c91e274192dad287c8edf8e8c178ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28818",
    "kind": "arxiv",
    "version": 1
  }
}