Pith Number

pith:IIZB6FZM

pith:2019:IIZB6FZMZXYPEFZCTG7QDI3AKF

not attested not anchored not stored refs pending

Please Forget Where I Was Last Summer: The Privacy Risks of Public Location (Meta)Data

Jason Polakis, Kostas Drakonakis, Panagiotis Ilia, Sotiris Ioannidis

arxiv:1901.00897 v1 · 2019-01-03 · cs.CY · 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{IIZB6FZMZXYPEFZCTG7QDI3AKF}

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.

Cited by

1 paper in Pith

How Tough Is Location Anonymization? Re-identifying 100K Real-User Trajectories in Japan

Receipt and verification

First computed	2026-05-17T23:56:57.762734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42321f172ccdf0f2172299bf01a360514eb44829028cadf35e334308598340bd

Aliases

arxiv: 1901.00897 · arxiv_version: 1901.00897v1 · doi: 10.48550/arxiv.1901.00897 · pith_short_12: IIZB6FZMZXYP · pith_short_16: IIZB6FZMZXYPEFZC · pith_short_8: IIZB6FZM

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/IIZB6FZMZXYPEFZCTG7QDI3AKF \
  | 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: 42321f172ccdf0f2172299bf01a360514eb44829028cadf35e334308598340bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ae364e26a30df5277475254ab3fec9ede3a2b051ceefd98d1991f9b4b22127f",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2019-01-03T20:09:11Z",
    "title_canon_sha256": "adb8c0cb08d28aac137ccd3f4a89e8cce01ff1efd49c62df20bc50cf89bcf217"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00897",
    "kind": "arxiv",
    "version": 1
  }
}