Pith Number

pith:UEVWLOVC

pith:2026:UEVWLOVCJUVAJD2DZJE2VBDOVU

not attested not anchored not stored refs pending

CaptchaMind: Training CAPTCHA Solvers via Reinforcement Learning with Explicit Reasoning Supervision

Baotian Hu, Guanhua Chen, Haoxiang Liu, Longyue Wang, Pengcheng Wang, Weihua Luo, Xiangxiang Zeng, Yang Dai

arxiv:2605.19538 v1 · 2026-05-19 · cs.CV · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UEVWLOVCJUVAJD2DZJE2VBDOVU}

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	2026-05-20T01:05:50.794652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a12b65baa24d2a048f43ca49aa846ead37edf79ea28edda5a2f85373e7ce24f5

Aliases

arxiv: 2605.19538 · arxiv_version: 2605.19538v1 · doi: 10.48550/arxiv.2605.19538 · pith_short_12: UEVWLOVCJUVA · pith_short_16: UEVWLOVCJUVAJD2D · pith_short_8: UEVWLOVC

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/UEVWLOVCJUVAJD2DZJE2VBDOVU \
  | 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: a12b65baa24d2a048f43ca49aa846ead37edf79ea28edda5a2f85373e7ce24f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0429f48d02732c2e563eb8fbd522e59819b3f5b546c08fdc3a30a1bcddf56ef5",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-19T08:38:44Z",
    "title_canon_sha256": "10b6a1dfe810f4353aad7502304a79ce5bbd93fdd54b6b5b0a1620ae3934880d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19538",
    "kind": "arxiv",
    "version": 1
  }
}