Pith Number

pith:QVGXLSHC

pith:2021:QVGXLSHCBHRNIR2NIQKMLCWNOP

not attested not anchored not stored refs pending

Public Perception of the German COVID-19 Contact-Tracing App Corona-Warn-App

Caroline Cohrdes, Felix Beierle, R\"udiger Pryss, Sophie Eicher, Uttam Dhakal

arxiv:2104.10550 v1 · 2021-04-21 · cs.CY · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QVGXLSHCBHRNIR2NIQKMLCWNOP}

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	2026-07-05T02:34:03.640306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

854d75c8e209e2d4474d4414c58acd73db7726979ea6b95a197b5afb3209dd23

Aliases

arxiv: 2104.10550 · arxiv_version: 2104.10550v1 · doi: 10.48550/arxiv.2104.10550 · pith_short_12: QVGXLSHCBHRN · pith_short_16: QVGXLSHCBHRNIR2N · pith_short_8: QVGXLSHC

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/QVGXLSHCBHRNIR2NIQKMLCWNOP \
  | 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: 854d75c8e209e2d4474d4414c58acd73db7726979ea6b95a197b5afb3209dd23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b59b6bf6271ae0e0829ae1aff8d25ce8a25be6ecbf1b34418323d74eb6e40f7b",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-04-21T14:17:38Z",
    "title_canon_sha256": "6d74298b54e896e247bcb011f8fc139c81b0fb1f497c29998b3dc25e4ee12efd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.10550",
    "kind": "arxiv",
    "version": 1
  }
}