Pith Number

pith:WC6F3CEJ

pith:2022:WC6F3CEJYVT4EDISI4YJZNBJTT

not attested not anchored not stored refs pending

Preventing Cheating in Hands-on Lab Assignments

Jan Vykopal, Pavel Seda, Pavel \v{C}eleda, Valdemar \v{S}v\'abensk\'y

arxiv:2201.01154 v1 · 2022-01-04 · cs.CY · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WC6F3CEJYVT4EDISI4YJZNBJTT}

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	2026-07-05T03:45:17.299733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0bc5d8889c567c20d1247309cb4299ce4b39aa498474858ee81ceaaf2254cb9

Aliases

arxiv: 2201.01154 · arxiv_version: 2201.01154v1 · doi: 10.48550/arxiv.2201.01154 · pith_short_12: WC6F3CEJYVT4 · pith_short_16: WC6F3CEJYVT4EDIS · pith_short_8: WC6F3CEJ

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/WC6F3CEJYVT4EDISI4YJZNBJTT \
  | 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: b0bc5d8889c567c20d1247309cb4299ce4b39aa498474858ee81ceaaf2254cb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1afdf02bdd569ff8ea3d69fae0bcc34df362dc61c5ae2511b1c266a85ad0c68b",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2022-01-04T14:34:16Z",
    "title_canon_sha256": "1669166abbca1dde45985fbb69eab695490ad33a7c43b64f583c7248b3da31ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.01154",
    "kind": "arxiv",
    "version": 1
  }
}