Pith Number

pith:G5PJOFPP

pith:2018:G5PJOFPPLNRZOMQ4KOIH3PPY53

not attested not anchored not stored refs pending

Fully self-referenced frequency comb consuming 5 Watts of electrical power

Daniel D. Hickstein, Daron A. Westly, David R. Carlson, Edgar F. Perez, Esther Baumann, Ian Coddington, Jeff Chiles, Kartik Srinivasan, Nathan R. Newbury, Paritosh Manurkar, Scott A. Diddams, Scott B. Papp

arxiv:1802.04119 v2 · 2018-02-07 · physics.ins-det · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G5PJOFPPLNRZOMQ4KOIH3PPY53}

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	2026-05-18T00:05:32.034965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

375e9715ef5b6397321c53907dbdf8eefeaa987c96de886d62e141bee3b8ccf6

Aliases

arxiv: 1802.04119 · arxiv_version: 1802.04119v2 · doi: 10.48550/arxiv.1802.04119 · pith_short_12: G5PJOFPPLNRZ · pith_short_16: G5PJOFPPLNRZOMQ4 · pith_short_8: G5PJOFPP

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/G5PJOFPPLNRZOMQ4KOIH3PPY53 \
  | 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: 375e9715ef5b6397321c53907dbdf8eefeaa987c96de886d62e141bee3b8ccf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9614c24449ca8c18cdfe8f0ee10ed693021f517d325461330f0130bd36fd14c",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2018-02-07T22:21:28Z",
    "title_canon_sha256": "af695db43ef67959facddf89817b4abefbbd0be8af0e6662a95324da2b9d7fe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04119",
    "kind": "arxiv",
    "version": 2
  }
}