Pith Number

pith:P6BZXNVJ

pith:2020:P6BZXNVJH4KHK5OHBUSINDQLMJ

not attested not anchored not stored refs pending

Spotr: GPS Spoofing Detection via Device Fingerprinting

Abdullah Z. Mohammed, Gregor Kildow, Mahsa Foruhandeh, Paul Berges, Ryan Gerdes

arxiv:2005.08787 v1 · 2020-05-18 · eess.SP · cs.SY · eess.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6BZXNVJH4KHK5OHBUSINDQLMJ}

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	2026-07-05T01:03:35.573989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f839bb6a93f147575c70d24868e0b6245c793871b077b5e2bc3a06af95bf08f

Aliases

arxiv: 2005.08787 · arxiv_version: 2005.08787v1 · doi: 10.48550/arxiv.2005.08787 · pith_short_12: P6BZXNVJH4KH · pith_short_16: P6BZXNVJH4KHK5OH · pith_short_8: P6BZXNVJ

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/P6BZXNVJH4KHK5OHBUSINDQLMJ \
  | 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: 7f839bb6a93f147575c70d24868e0b6245c793871b077b5e2bc3a06af95bf08f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a2cf1305a246d151965c849c0cc9b8d9ce4854ca9867b6825d6fd2f848c8b7a",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2020-05-18T15:08:11Z",
    "title_canon_sha256": "b5f919ec69e0f81d742d4a366027c2547059da3e00cc4eb599d691efacfaef6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.08787",
    "kind": "arxiv",
    "version": 1
  }
}