Pith Number

pith:RQCOQW3E

pith:2026:RQCOQW3EJOW65ED55YAZTK6ED4

not attested not anchored not stored refs pending

ContextEcho: A Benchmark for Persona Drift in Long Agentic-Coding Sessions

Bill Zhao, Changwei Liu, Xianzhong Ding, Yangyang Yu

arxiv:2605.24279 v1 · 2026-05-22 · cs.CL · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQCOQW3EJOW65ED55YAZTK6ED4}

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	2026-05-26T01:02:57.529754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c04e85b644badee907dee0199abc41f3674508f4ee88f079a0b33f1ccf7fa45

Aliases

arxiv: 2605.24279 · arxiv_version: 2605.24279v1 · doi: 10.48550/arxiv.2605.24279 · pith_short_12: RQCOQW3EJOW6 · pith_short_16: RQCOQW3EJOW65ED5 · pith_short_8: RQCOQW3E

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/RQCOQW3EJOW65ED55YAZTK6ED4 \
  | 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: 8c04e85b644badee907dee0199abc41f3674508f4ee88f079a0b33f1ccf7fa45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "027da2248037e5d4fe63804ad565706ac22abaaa59554b459f3897f3de59e0c3",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-22T23:13:21Z",
    "title_canon_sha256": "caf490498adc49d21058a031c3c787d86caf51e6845ae12aedbc669a30c0a86e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24279",
    "kind": "arxiv",
    "version": 1
  }
}