Pith Number

pith:I4VQ652I

pith:2021:I4VQ652IVQFFZAVEYU6XJWWYHW

not attested not anchored not stored refs pending

YAPS -- Your Open Examination System for Activating and emPowering Students

Fin Hendrik Bahnsen, Goerschwin Fey

arxiv:2105.06552 v1 · 2021-04-27 · cs.CY · cs.OH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I4VQ652IVQFFZAVEYU6XJWWYHW}

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	2026-07-05T02:40:11.487560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

472b0f7748ac0a5c82a4c53d74dad83d8900dbaddce79a13f5f77393aeecbc7b

Aliases

arxiv: 2105.06552 · arxiv_version: 2105.06552v1 · doi: 10.48550/arxiv.2105.06552 · pith_short_12: I4VQ652IVQFF · pith_short_16: I4VQ652IVQFFZAVE · pith_short_8: I4VQ652I

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/I4VQ652IVQFFZAVEYU6XJWWYHW \
  | 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: 472b0f7748ac0a5c82a4c53d74dad83d8900dbaddce79a13f5f77393aeecbc7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2c224f476834133c50350a9e53f0276811b685322f77853ce736cd698af02e9",
    "cross_cats_sorted": [
      "cs.OH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-04-27T09:52:43Z",
    "title_canon_sha256": "60207b53678d3032c0919bcb9d37ee452d99ed1e54b19a1c5d56dee66c36ec56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.06552",
    "kind": "arxiv",
    "version": 1
  }
}