Pith Number

pith:IB7XGDTL

pith:2020:IB7XGDTLGHOGC4QWQLGMT2MFEE

not attested not anchored not stored refs pending

Approximate Nearest Neighbour Search on Privacy-aware Encoding of User Locations to Identify Susceptible Infections in Simulated Epidemics

Chandan Biswas, Debasis Ganguly, Ujjwal Bhattacharya

arxiv:2004.08851 v2 · 2020-04-19 · cs.IR · cs.LG · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IB7XGDTLGHOGC4QWQLGMT2MFEE}

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	2026-07-05T01:40:26.676911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

407f730e6b31dc61721682ccc9e9852126e534595485a31ad0cfd05e00adb011

Aliases

arxiv: 2004.08851 · arxiv_version: 2004.08851v2 · doi: 10.48550/arxiv.2004.08851 · pith_short_12: IB7XGDTLGHOG · pith_short_16: IB7XGDTLGHOGC4QW · pith_short_8: IB7XGDTL

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/IB7XGDTLGHOGC4QWQLGMT2MFEE \
  | 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: 407f730e6b31dc61721682ccc9e9852126e534595485a31ad0cfd05e00adb011

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf2ed8e2b496a0c6f5afd4f6edc9134b8b59167299eaea6bc61d68ef35ba94de",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-04-19T13:34:16Z",
    "title_canon_sha256": "0439ddea36faac9ea5244dc262b77ef9addce7d217d7d1cf7bbc2ac43cbf14df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.08851",
    "kind": "arxiv",
    "version": 2
  }
}