Pith Number

pith:U2XU3DQD

pith:2018:U2XU3DQDVUQBKPLKXNFP34WKMG

not attested not anchored not stored refs pending

A Survey of Air-to-Ground Propagation Channel Modeling for Unmanned Aerial Vehicles

David Matolak, Ismail Guvenc, Nicolas Schneckenberger, Uwe-Carsten Fiebig, Wahab Khawaja

arxiv:1801.01656 v1 · 2018-01-05 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2XU3DQDVUQBKPLKXNFP34WKMG}

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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	2026-05-18T00:26:41.475969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6af4d8e03ad20153d6abb4afdf2ca61bcdf1e6e8fc46d47d42c080bfbbc39c5

Aliases

arxiv: 1801.01656 · arxiv_version: 1801.01656v1 · doi: 10.48550/arxiv.1801.01656 · pith_short_12: U2XU3DQDVUQB · pith_short_16: U2XU3DQDVUQBKPLK · pith_short_8: U2XU3DQD

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/U2XU3DQDVUQBKPLKXNFP34WKMG \
  | 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: a6af4d8e03ad20153d6abb4afdf2ca61bcdf1e6e8fc46d47d42c080bfbbc39c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "619bbed6aa4d70db413d647b23a916f477bad456b420369c20699acc83e1179c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-01-05T07:45:48Z",
    "title_canon_sha256": "cfef8bce3a400766da317b17646b3311bc68ce7e61f6ab8d1dcacd94fd012961"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01656",
    "kind": "arxiv",
    "version": 1
  }
}