Pith Number

pith:5KTKRB3M

pith:2018:5KTKRB3MOAKMPCUTZUJXWUPGFH

not attested not anchored not stored refs pending

Security Vulnerability of FDD Massive MIMO Systems in Downlink Training Phase

Mohammad Amin Sheikhi, S. Mohammad Razavizadeh

arxiv:1812.03492 v1 · 2018-12-09 · cs.CR · cs.IT · eess.SP · 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{5KTKRB3MOAKMPCUTZUJXWUPGFH}

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	2026-05-17T23:49:33.062580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eaa6a8876c7014c78a93cd137b51e629e653d674de5457dd030d32d35670a02d

Aliases

arxiv: 1812.03492 · arxiv_version: 1812.03492v1 · doi: 10.48550/arxiv.1812.03492 · pith_short_12: 5KTKRB3MOAKM · pith_short_16: 5KTKRB3MOAKMPCUT · pith_short_8: 5KTKRB3M

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/5KTKRB3MOAKMPCUTZUJXWUPGFH \
  | 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: eaa6a8876c7014c78a93cd137b51e629e653d674de5457dd030d32d35670a02d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "602eac0a2fe854354f3f32ae2618619618a8ce6be91fd2b1dea5de9fc422633d",
    "cross_cats_sorted": [
      "cs.IT",
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2018-12-09T14:30:34Z",
    "title_canon_sha256": "ac5021f4b502c4148f1539468cd0086dfa10599aac38dcc503574095d35e8897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03492",
    "kind": "arxiv",
    "version": 1
  }
}