Pith Number

pith:NLDPWOAB

pith:2016:NLDPWOABOL6DWVZGBHO2PJGR4F

not attested not anchored not stored refs pending

Usability Investigation on the Localization of Text CAPTCHAs: Take Chinese Characters as a Case Study

Junnan Yu, Ting Han, Xuna Ma

arxiv:1612.01070 v1 · 2016-12-04 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NLDPWOABOL6DWVZGBHO2PJGR4F}

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	2026-05-18T00:55:53.432630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ac6fb380172fc3b572609dda7a4d1e152871720a5303085837ed460e8cb55bb

Aliases

arxiv: 1612.01070 · arxiv_version: 1612.01070v1 · doi: 10.48550/arxiv.1612.01070 · pith_short_12: NLDPWOABOL6D · pith_short_16: NLDPWOABOL6DWVZG · pith_short_8: NLDPWOAB

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/NLDPWOABOL6DWVZGBHO2PJGR4F \
  | 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: 6ac6fb380172fc3b572609dda7a4d1e152871720a5303085837ed460e8cb55bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f6ae9649401efa9b2d1d4fd907aeb52d6c5d0130170c32832004434b6c64fad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2016-12-04T05:34:58Z",
    "title_canon_sha256": "2a9795b738a0d15aa4943cb270aea1635f15a6a5ae666c572bc7a7d3bdaaed49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01070",
    "kind": "arxiv",
    "version": 1
  }
}