Pith Number

pith:C2HQXJJE

pith:2022:C2HQXJJECFYUWHIPWGQ4TYYVRI

not attested not anchored not stored refs pending

Biometrics in the Time of Pandemic: 40% Masked Face Recognition Degradation can be Reduced to 2%

Kenneth Lai, Leonardo Queiroz, Svetlana Yanushkevich, Vlad Shmerko

arxiv:2201.00461 v1 · 2022-01-03 · 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{C2HQXJJECFYUWHIPWGQ4TYYVRI}

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	2026-07-05T03:45:02.998937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

168f0ba52411714b1d0fb1a1c9e3158a1d6f1baf87debc246a4f4990d76cded9

Aliases

arxiv: 2201.00461 · arxiv_version: 2201.00461v1 · doi: 10.48550/arxiv.2201.00461 · pith_short_12: C2HQXJJECFYU · pith_short_16: C2HQXJJECFYUWHIP · pith_short_8: C2HQXJJE

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/C2HQXJJECFYUWHIPWGQ4TYYVRI \
  | 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: 168f0ba52411714b1d0fb1a1c9e3158a1d6f1baf87debc246a4f4990d76cded9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913bdfe4e6acb84733fd5f79bfaddab74496d3e377d2b91b4aad63d13d05d10d",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-01-03T03:17:06Z",
    "title_canon_sha256": "b2f611664cae84877f535597b196138c66dbd340a769a91f2425ab3bcc14f51d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.00461",
    "kind": "arxiv",
    "version": 1
  }
}