Pith Number

pith:D4DKJEL5

pith:2019:D4DKJEL5HWPHAHF3XV76NLKDTA

not attested not anchored not stored refs pending

Verification Code Recognition Based on Active and Deep Learning

Bailing Wang, Dongliang Xu, Jingyu Liu, Xiaojiang Du, Xiaoyan Yu, Xiaoyan Zhu, Zhitao Guan

arxiv:1902.04401 v1 · 2019-02-12 · cs.CR · 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{D4DKJEL5HWPHAHF3XV76NLKDTA}

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	2026-05-17T23:54:12.356967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f06a4917d3d9e701cbbbd7fe6ad43982b2e06d4412f8c35bfe9583d1dbca28d

Aliases

arxiv: 1902.04401 · arxiv_version: 1902.04401v1 · doi: 10.48550/arxiv.1902.04401 · pith_short_12: D4DKJEL5HWPH · pith_short_16: D4DKJEL5HWPHAHF3 · pith_short_8: D4DKJEL5

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/D4DKJEL5HWPHAHF3XV76NLKDTA \
  | 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: 1f06a4917d3d9e701cbbbd7fe6ad43982b2e06d4412f8c35bfe9583d1dbca28d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b5a88174f1ce3d339d6ffffacc5f382aaf144b4e83ef65d7aa470237ef17137",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-02-12T14:19:10Z",
    "title_canon_sha256": "99d30ba8facf6a9c38d592bc8b5f30226ee2a2eb24c8e0a28d48ad43c7a4f4ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04401",
    "kind": "arxiv",
    "version": 1
  }
}