Pith Number

pith:RX4DOAJC

pith:2012:RX4DOAJC27PZ5VPH7GIHUOVW5Y

not attested not anchored not stored refs pending

Preserving Co-Location Privacy in Geo-Social Networks

Matteo Camilli

arxiv:1203.3946 v2 · 2012-03-18 · cs.SI · cs.CY · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RX4DOAJC27PZ5VPH7GIHUOVW5Y}

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	2026-05-18T03:59:01.127968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8df8370122d7df9ed5e7f9907a3ab6ee0b7eaef53f441f8c8c37c0149e8cc0d1

Aliases

arxiv: 1203.3946 · arxiv_version: 1203.3946v2 · doi: 10.48550/arxiv.1203.3946 · pith_short_12: RX4DOAJC27PZ · pith_short_16: RX4DOAJC27PZ5VPH · pith_short_8: RX4DOAJC

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/RX4DOAJC27PZ5VPH7GIHUOVW5Y \
  | 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: 8df8370122d7df9ed5e7f9907a3ab6ee0b7eaef53f441f8c8c37c0149e8cc0d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1101900d93d8fe2af5864a2445b1d8897f9bf5bdef92559ee4593d9c5d420464",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2012-03-18T12:49:22Z",
    "title_canon_sha256": "b7737b5bba35dba9543c33c22113188cd4a18e407d3667841e7849f30a440490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3946",
    "kind": "arxiv",
    "version": 2
  }
}