Pith Number

pith:FYCOSOIV

pith:2019:FYCOSOIVJQE3AYNMY2JSURD6ZM

not attested not anchored not stored refs pending

Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency

Israa Abdualqassim Mohammed Ali

arxiv:1908.01836 v1 · 2019-08-05 · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FYCOSOIVJQE3AYNMY2JSURD6ZM}

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	2026-07-04T23:51:48.266266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e04e939154c09b061acc6932a447ecb338b7f40847284ee549b5a118e15e15f

Aliases

arxiv: 1908.01836 · arxiv_version: 1908.01836v1 · doi: 10.48550/arxiv.1908.01836 · pith_short_12: FYCOSOIVJQE3 · pith_short_16: FYCOSOIVJQE3AYNM · pith_short_8: FYCOSOIV

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/FYCOSOIVJQE3AYNMY2JSURD6ZM \
  | 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: 2e04e939154c09b061acc6932a447ecb338b7f40847284ee549b5a118e15e15f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa9dddf569375af26cddad6ee96558a29c0c128e5c940addd480281d0ffa7750",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2019-08-05T20:18:09Z",
    "title_canon_sha256": "663d5ffb4c470ea5bfc818b664abcbc26e1abf6a282d6c222fc1c6ad50cc95e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01836",
    "kind": "arxiv",
    "version": 1
  }
}