Pith Number

pith:EHPEAETU

pith:2018:EHPEAETU2YBTKSKIGDUMVQAIWI

not attested not anchored not stored refs pending

Measuring the phase velocity of twisted wavefronts

Daniel Giovannini, Gabriel C. Spalding, Grace Richard, Holly Lay, Martin P. J. Lavery, Sandy Cochran

arxiv:1810.08079 v1 · 2018-10-17 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHPEAETU2YBTKSKIGDUMVQAIWI}

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	2026-05-18T00:02:50.629306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21de401274d60335494830e8cac008b20fbae87f388ce6ddbfe9d39b0ef03194

Aliases

arxiv: 1810.08079 · arxiv_version: 1810.08079v1 · doi: 10.48550/arxiv.1810.08079 · pith_short_12: EHPEAETU2YBT · pith_short_16: EHPEAETU2YBTKSKI · pith_short_8: EHPEAETU

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/EHPEAETU2YBTKSKIGDUMVQAIWI \
  | 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: 21de401274d60335494830e8cac008b20fbae87f388ce6ddbfe9d39b0ef03194

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e05612df36f1f0dec67446b7828df8fdf89a3901f37ef2b1f58c5708248ce5e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2018-10-17T13:14:27Z",
    "title_canon_sha256": "65082b67bd2fcf6e61eaf1b36684033e63c08c3c0b0183149c9deb25cd6b9d48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08079",
    "kind": "arxiv",
    "version": 1
  }
}