Pith Number

pith:MBEDF7XH

pith:2020:MBEDF7XHRJZV2CT5PGABACPLRG

not attested not anchored not stored refs pending

Contact Classification in COVID-19 Tracing

Christoph G\"unther, Daniel G\"unther

arxiv:2008.00431 v2 · 2020-08-02 · eess.SP · 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{MBEDF7XHRJZV2CT5PGABACPLRG}

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	2026-07-05T01:26:23.564084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

604832fee78a735d0a7d79801009eb898fdfa044c0c42f36eb2f18c65b84b204

Aliases

arxiv: 2008.00431 · arxiv_version: 2008.00431v2 · doi: 10.48550/arxiv.2008.00431 · pith_short_12: MBEDF7XHRJZV · pith_short_16: MBEDF7XHRJZV2CT5 · pith_short_8: MBEDF7XH

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/MBEDF7XHRJZV2CT5PGABACPLRG \
  | 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: 604832fee78a735d0a7d79801009eb898fdfa044c0c42f36eb2f18c65b84b204

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d246b77dca9d470dce4cb66baadea80d8b9039ab86154e918a3f2431d04481e",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2020-08-02T08:05:26Z",
    "title_canon_sha256": "cd7742441730fae9953e73639b6010dca0a989bd8c91de88a12884a5c6224c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.00431",
    "kind": "arxiv",
    "version": 2
  }
}