Pith Number

pith:BG3UA2SW

pith:2017:BG3UA2SWKN5JTMQPR6DZMGN4WO

not attested not anchored not stored refs pending

Zero reflection and transmission in graded index media

Chris King, Simon Horsley, Tom Philbin

arxiv:1702.06057 v2 · 2017-02-20 · 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{BG3UA2SWKN5JTMQPR6DZMGN4WO}

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	2026-05-18T00:40:07.164634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09b7406a56537a99b20f8f879619bcb3a4cb7918a925c5d8612de251337992ab

Aliases

arxiv: 1702.06057 · arxiv_version: 1702.06057v2 · doi: 10.48550/arxiv.1702.06057 · pith_short_12: BG3UA2SWKN5J · pith_short_16: BG3UA2SWKN5JTMQP · pith_short_8: BG3UA2SW

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/BG3UA2SWKN5JTMQPR6DZMGN4WO \
  | 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: 09b7406a56537a99b20f8f879619bcb3a4cb7918a925c5d8612de251337992ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a821fa657e62ac15d812686a642a8beda0eec9c27a8c375f062f911b8486032",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-02-20T16:43:35Z",
    "title_canon_sha256": "db547c85f8a9d70fb874d635a598149bd6ac8d01a329ede3149323c65c281115"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06057",
    "kind": "arxiv",
    "version": 2
  }
}