Pith Number

pith:PA7RDHJR

pith:2020:PA7RDHJRRCHDY4NBEYN2OKMU2Z

not attested not anchored not stored refs pending

Unique Exams: Designing assessments for integrity and fairness

Gili Rusak, Lisa Yan

arxiv:2009.01713 v1 · 2020-09-03 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PA7RDHJRRCHDY4NBEYN2OKMU2Z}

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	2026-07-05T01:32:52.649082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

783f119d31888e3c71a1261ba72994d66a5585e4eb318dd0ad2dda7df60d3fd2

Aliases

arxiv: 2009.01713 · arxiv_version: 2009.01713v1 · doi: 10.48550/arxiv.2009.01713 · pith_short_12: PA7RDHJRRCHD · pith_short_16: PA7RDHJRRCHDY4NB · pith_short_8: PA7RDHJR

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/PA7RDHJRRCHDY4NBEYN2OKMU2Z \
  | 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: 783f119d31888e3c71a1261ba72994d66a5585e4eb318dd0ad2dda7df60d3fd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5df377b6f822179b9640b841628e46db98e5e0841c50d189b4ceb06c839f2057",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-09-03T14:44:00Z",
    "title_canon_sha256": "8edd1a3ab23cd5874fe7329acca1cda56938e8eac8f96093ebc34fd225410d19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.01713",
    "kind": "arxiv",
    "version": 1
  }
}