Pith Number

pith:7Q4YOBR2

pith:2019:7Q4YOBR2YTUTG7BECK5ABOLVRE

not attested not anchored not stored refs pending

Opportunistic Ambient Backscatter Communication in RF-Powered Cognitive Radio Networks

Naofal Al-Dhahir, Paschalis C. Sofotasios, Rajalekshmi Kishore, Sami Muhaidat, Sanjeev Gurugopinath

arxiv:1902.00332 v1 · 2019-02-01 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Q4YOBR2YTUTG7BECK5ABOLVRE}

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	2026-05-17T23:54:57.765227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc3987063ac4e9337c2412ba00b9758919f3197c3ce780dd969086b050dc4a4b

Aliases

arxiv: 1902.00332 · arxiv_version: 1902.00332v1 · doi: 10.48550/arxiv.1902.00332 · pith_short_12: 7Q4YOBR2YTUT · pith_short_16: 7Q4YOBR2YTUTG7BE · pith_short_8: 7Q4YOBR2

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/7Q4YOBR2YTUTG7BECK5ABOLVRE \
  | 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: fc3987063ac4e9337c2412ba00b9758919f3197c3ce780dd969086b050dc4a4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca29453105a8880982a5fb0228402f25a88b69d66f73f168cda44d74d7a1a886",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-02-01T14:00:59Z",
    "title_canon_sha256": "76f878f3b8741cb719e367378985d97125aaf83d821b3a85d73d477df620f173"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00332",
    "kind": "arxiv",
    "version": 1
  }
}