Pith Number

pith:COVP5QMD

pith:2015:COVP5QMDXLDCQEUJLCVMNMW5B2

not attested not anchored not stored refs pending

Cell-Free Massive MIMO: Uniformly Great Service For Everyone

Alexei Ashikhmin, Erik G. Larsson, Hien Quoc Ngo, Hong Yang, Thomas L. Marzetta

arxiv:1505.02617 v1 · 2015-05-11 · 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{COVP5QMDXLDCQEUJLCVMNMW5B2}

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	2026-05-18T02:16:12.082115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13aafec183bac628128958aac6b2dd0e9fa294c67e826e9ea27133ace14002c8

Aliases

arxiv: 1505.02617 · arxiv_version: 1505.02617v1 · doi: 10.48550/arxiv.1505.02617 · pith_short_12: COVP5QMDXLDC · pith_short_16: COVP5QMDXLDCQEUJ · pith_short_8: COVP5QMD

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/COVP5QMDXLDCQEUJLCVMNMW5B2 \
  | 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: 13aafec183bac628128958aac6b2dd0e9fa294c67e826e9ea27133ace14002c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68077a8e9fda67a94b65dc164541e9af7f67035addf8f14ab97ec9738e511720",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-05-11T13:52:48Z",
    "title_canon_sha256": "86dea50e004f2e4969be23cd8bb836184b49b208ffad79a3f059a20c33123867"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02617",
    "kind": "arxiv",
    "version": 1
  }
}