Pith Number

pith:3SWKYMHT

pith:2020:3SWKYMHT3Z2DHBB7V73C574U7K

not attested not anchored not stored refs pending

CoVista: A Unified View on Privacy Sensitive Mobile Contact Tracing Effort

Alvin Wan, David Culler, Gabe Fierro, Johann Schleier-Smith, Joseph E. Gonzalez, K. Shankari, Nathan Pemberton, Prabal Dutta, Thomas Zachariah

arxiv:2005.13164 v1 · 2020-05-27 · cs.CR · 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{3SWKYMHT3Z2DHBB7V73C574U7K}

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	2026-07-05T01:06:13.530730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcacac30f3de7433843faff62eff94fabcb3968e25707771ffdc9cd0e3171cbf

Aliases

arxiv: 2005.13164 · arxiv_version: 2005.13164v1 · doi: 10.48550/arxiv.2005.13164 · pith_short_12: 3SWKYMHT3Z2D · pith_short_16: 3SWKYMHT3Z2DHBB7 · pith_short_8: 3SWKYMHT

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/3SWKYMHT3Z2DHBB7V73C574U7K \
  | 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: dcacac30f3de7433843faff62eff94fabcb3968e25707771ffdc9cd0e3171cbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "904806ca0c5973c1d49c8303f5bb5332732f9ae486c5997b75432320037d8d2a",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2020-05-27T05:09:41Z",
    "title_canon_sha256": "7580c8cfe136270eaab3b2a5bc8a39fa5892882f55c22165b88493544b81b07c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.13164",
    "kind": "arxiv",
    "version": 1
  }
}