Pith Number

pith:NRH2MBBO

pith:2012:NRH2MBBOIPRKM7N6JUMMYHAWZM

not attested not anchored not stored refs pending

PlaceRaider: Virtual Theft in Physical Spaces with Smartphones

Apu Kapadia, David Crandall, Robert Templeman, Zahid Rahman

arxiv:1209.5982 v1 · 2012-09-26 · cs.CR · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NRH2MBBOIPRKM7N6JUMMYHAWZM}

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	2026-05-18T03:44:45.751631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c4fa6042e43e2a67dbe4d18cc1c16cb1f14488e29e83d58b448d9f149ff6db6

Aliases

arxiv: 1209.5982 · arxiv_version: 1209.5982v1 · doi: 10.48550/arxiv.1209.5982 · pith_short_12: NRH2MBBOIPRK · pith_short_16: NRH2MBBOIPRKM7N6 · pith_short_8: NRH2MBBO

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/NRH2MBBOIPRKM7N6JUMMYHAWZM \
  | 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: 6c4fa6042e43e2a67dbe4d18cc1c16cb1f14488e29e83d58b448d9f149ff6db6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bd2db31eb0e48db5210339195dcab5bbcdf3fd9aa7f0982af5ded38c899d70f",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-09-26T15:56:07Z",
    "title_canon_sha256": "d461c0ad5ab67a1ccf2212d5e2e23356a1cb97d070fb80bf203acdaca9178515"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5982",
    "kind": "arxiv",
    "version": 1
  }
}