Pith Number

pith:2B7RSMNV

pith:2018:2B7RSMNVYFQK6RFSDY4DS23G2E

not attested not anchored not stored refs pending

Optical and RF Metrology for 5G

David A. Humphreys, Irshaad Fatadin, Mark Bieler, Martin Hudlicka, Paul Struszewski

arxiv:1809.08934 v1 · 2018-09-21 · 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{2B7RSMNVYFQK6RFSDY4DS23G2E}

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	2026-05-18T00:05:03.115032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d07f1931b5c160af44b21e38396b66d131c54df904c9d110623c503b5b63dedb

Aliases

arxiv: 1809.08934 · arxiv_version: 1809.08934v1 · doi: 10.48550/arxiv.1809.08934 · pith_short_12: 2B7RSMNVYFQK · pith_short_16: 2B7RSMNVYFQK6RFS · pith_short_8: 2B7RSMNV

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/2B7RSMNVYFQK6RFSDY4DS23G2E \
  | 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: d07f1931b5c160af44b21e38396b66d131c54df904c9d110623c503b5b63dedb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca048bce7424fafb7399f5bc8c3fda3bd3d69b12ac7cb489ecbd6fc14dc17710",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-09-21T10:45:04Z",
    "title_canon_sha256": "7779f31d6fa76a6792588afa0a1e369eeab7d0825572d299964e5cbcac8ee67c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08934",
    "kind": "arxiv",
    "version": 1
  }
}