Pith Number

pith:D3QEPYW6

pith:2026:D3QEPYW6FQDSQF7YRBF2SWKEZQ

not attested not anchored not stored refs pending

AFDM as a Software Upgrade of OFDM: One Firmware Patch, a New Frontier

Giuseppe Thadeu Freitas de Abreu, Hyeon Seok Rou

arxiv:2605.23062 v1 · 2026-05-21 · 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{D3QEPYW6FQDSQF7YRBF2SWKEZQ}

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	2026-05-25T02:01:36.699990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ee047e2de2c072817f8884ba95944cc0a0ece6a4d1615686a70261efdf3b1e0

Aliases

arxiv: 2605.23062 · arxiv_version: 2605.23062v1 · doi: 10.48550/arxiv.2605.23062 · pith_short_12: D3QEPYW6FQDS · pith_short_16: D3QEPYW6FQDSQF7Y · pith_short_8: D3QEPYW6

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/D3QEPYW6FQDSQF7YRBF2SWKEZQ \
  | 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: 1ee047e2de2c072817f8884ba95944cc0a0ece6a4d1615686a70261efdf3b1e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "894a387ff690853a21abce3f25d663678fb3287b818e972f2c1ce2dce906b0b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-21T21:53:53Z",
    "title_canon_sha256": "13591e5571315e6f829f4cb44d679c58c4f90543ec7a8b82fd87685711ace423"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23062",
    "kind": "arxiv",
    "version": 1
  }
}