Pith Number

pith:XLDIISQ4

pith:2020:XLDIISQ4ZVABO4NFPQ7UZZ3YDD

not attested not anchored not stored refs pending

Review and Critical Analysis of Privacy-preserving Infection Tracking and Contact Tracing

Christos Chrysoulas, David Haynes, Lei Zhang, Masood Ur-Rehman, Muhammad Ali Imran, Nikolaos Pitropakis, Pavlos Papadopoulos, Qammer H. Abbasi, William J Buchanan

arxiv:2009.05126 v1 · 2020-09-10 · 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{XLDIISQ4ZVABO4NFPQ7UZZ3YDD}

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	2026-07-05T01:36:32.164639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bac6844a1ccd401771a57c3f4ce77818cf45ac84c72a51a4a61121853178d384

Aliases

arxiv: 2009.05126 · arxiv_version: 2009.05126v1 · doi: 10.48550/arxiv.2009.05126 · pith_short_12: XLDIISQ4ZVAB · pith_short_16: XLDIISQ4ZVABO4NF · pith_short_8: XLDIISQ4

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/XLDIISQ4ZVABO4NFPQ7UZZ3YDD \
  | 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: bac6844a1ccd401771a57c3f4ce77818cf45ac84c72a51a4a61121853178d384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad52749516fa120d7e5a6ffa6f33482a7555a84e5c2472dc8d6644aff963b8fa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2020-09-10T19:54:49Z",
    "title_canon_sha256": "5b04c12a19d5418f99ad3e54a8b510cc2b02a292e79a5f4f8b45d52386fa3aea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.05126",
    "kind": "arxiv",
    "version": 1
  }
}