Pith Number

pith:5BKJOPC2

pith:2018:5BKJOPC2APD2PGH5VNHSECQRRG

not attested not anchored not stored refs pending

A 3D-printed broadband millimeter wave absorber

Charles L. Bennett, Edward J. Wollack, John Appel, Joseph Eimer, Joshua Ramirez, Karwan Rostem, Matthew Petroff, Tobias Marriage

arxiv:1808.00820 v2 · 2018-08-02 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5BKJOPC2APD2PGH5VNHSECQRRG}

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	2026-05-17T23:54:53.985323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e854973c5a03c7a798fdab4f220a1189aaab8d3fb379197dac91bb32a6adb817

Aliases

arxiv: 1808.00820 · arxiv_version: 1808.00820v2 · doi: 10.48550/arxiv.1808.00820 · pith_short_12: 5BKJOPC2APD2 · pith_short_16: 5BKJOPC2APD2PGH5 · pith_short_8: 5BKJOPC2

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/5BKJOPC2APD2PGH5VNHSECQRRG \
  | 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: e854973c5a03c7a798fdab4f220a1189aaab8d3fb379197dac91bb32a6adb817

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe4799da9901b65f9c165d4e604eb7d178792158fd29479a64c7b04e68bee1b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-08-02T14:08:56Z",
    "title_canon_sha256": "2b2eace05d32b80b2dbb6902a2df1a53b5d80bef23a8a8eabb159a490e489224"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00820",
    "kind": "arxiv",
    "version": 2
  }
}