Pith Number

pith:P6A4EHQX

pith:2019:P6A4EHQXU25IMV6B2TG7ASDBGI

not attested not anchored not stored refs pending

BEACHES: Beamspace Channel Estimation for Multi-Antenna mmWave Systems and Beyond

Alexandra Gallyas-Sanhueza, Christoph Studer, Ramina Ghods, Seyed Hadi Mirfarshbafan

arxiv:1908.02884 v1 · 2019-08-08 · eess.SP · 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{P6A4EHQXU25IMV6B2TG7ASDBGI}

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	2026-07-04T23:52:24.469070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f81c21e17a6ba8657c1d4cdf0486132362fdc1148ab28f20e78dede86542782

Aliases

arxiv: 1908.02884 · arxiv_version: 1908.02884v1 · doi: 10.48550/arxiv.1908.02884 · pith_short_12: P6A4EHQXU25I · pith_short_16: P6A4EHQXU25IMV6B · pith_short_8: P6A4EHQX

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/P6A4EHQXU25IMV6B2TG7ASDBGI \
  | 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: 7f81c21e17a6ba8657c1d4cdf0486132362fdc1148ab28f20e78dede86542782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "985e3d2905de6ae4ac64b3cab06e0e8534ddbf22ef8d0f7ed8adcfb35282f29a",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-08-08T00:09:47Z",
    "title_canon_sha256": "4a421b462c83671de270654f754221791e3a944ec06f2078b4159c666df7f3d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02884",
    "kind": "arxiv",
    "version": 1
  }
}