Pith Number

pith:USTNK7L3

pith:2017:USTNK7L3EJE7XS7MNFBDLV5ZWI

not attested not anchored not stored refs pending

Ultra-broadband gradient-pitch Bragg-Berry mirrors

Etienne Brasselet, Gonzague Agez, Mushegh Rafayelyan

arxiv:1709.05521 v1 · 2017-09-16 · 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{USTNK7L3EJE7XS7MNFBDLV5ZWI}

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	2026-05-18T00:31:39.823697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4a6d57d7b2249fbcbec694235d7b9b22e0dce2ea7e449ca1fdc0a407d7c52bd

Aliases

arxiv: 1709.05521 · arxiv_version: 1709.05521v1 · doi: 10.48550/arxiv.1709.05521 · pith_short_12: USTNK7L3EJE7 · pith_short_16: USTNK7L3EJE7XS7M · pith_short_8: USTNK7L3

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/USTNK7L3EJE7XS7MNFBDLV5ZWI \
  | 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: a4a6d57d7b2249fbcbec694235d7b9b22e0dce2ea7e449ca1fdc0a407d7c52bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0969a1379ee7cf82b769fc0801e655933f7c2d1408e5cb887ae1ed6b1fbb48ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-09-16T14:32:40Z",
    "title_canon_sha256": "d38e7bf774b8c539c8f4e00fe2ed4361b222d785bc2f3062567734edcdf0d911"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05521",
    "kind": "arxiv",
    "version": 1
  }
}