Pith Number

pith:VVGB3PCI

pith:2011:VVGB3PCI43MO6ILJEPADMJTMZD

not attested not anchored not stored refs pending

Where Have You Been? Secure Location Provenance for Mobile Devices

Ragib Hasan, Randal Burns

arxiv:1107.1821 v1 · 2011-07-09 · 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{VVGB3PCI43MO6ILJEPADMJTMZD}

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	2026-05-18T04:18:34.097607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad4c1dbc48e6d8ef216923c036266cc8e85e71086b6060baa4c43d7e798d2e7e

Aliases

arxiv: 1107.1821 · arxiv_version: 1107.1821v1 · doi: 10.48550/arxiv.1107.1821 · pith_short_12: VVGB3PCI43MO · pith_short_16: VVGB3PCI43MO6ILJ · pith_short_8: VVGB3PCI

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/VVGB3PCI43MO6ILJEPADMJTMZD \
  | 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: ad4c1dbc48e6d8ef216923c036266cc8e85e71086b6060baa4c43d7e798d2e7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eb184cd180fa0cfa49b065b6d979ff6060efc99c67677239f59c5e98da712b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2011-07-09T22:31:10Z",
    "title_canon_sha256": "934877420a00a13a73ba454588e23e8b875f2bc00c3d28a2baec92b9cad1a0a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1821",
    "kind": "arxiv",
    "version": 1
  }
}