Pith Number

pith:ZN53E3HQ

pith:2017:ZN53E3HQZEETSM2FY7LBTTMFO7

not attested not anchored not stored refs pending

Optical vortex knots - one photon at a time

Kristian Helmerson, Sebastien Tempone-Wiltshire, Shaun Johnstone

arxiv:1701.01517 v1 · 2017-01-06 · physics.optics · quant-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{ZN53E3HQZEETSM2FY7LBTTMFO7}

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	2026-05-18T00:53:16.662858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb7bb26cf0c909393345c7d619cd8577c49cb8b4afa6e99576b1d234d34a2b8f

Aliases

arxiv: 1701.01517 · arxiv_version: 1701.01517v1 · doi: 10.48550/arxiv.1701.01517 · pith_short_12: ZN53E3HQZEET · pith_short_16: ZN53E3HQZEETSM2F · pith_short_8: ZN53E3HQ

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/ZN53E3HQZEETSM2FY7LBTTMFO7 \
  | 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: cb7bb26cf0c909393345c7d619cd8577c49cb8b4afa6e99576b1d234d34a2b8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2f633eb0412a8f549b0afe3801eeb99f97c937101466ffc4d1fe06ffd65ff9f",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-01-06T00:49:11Z",
    "title_canon_sha256": "eb523a9e75509bea11eaeca6fe72c8e4682aa2418b7de4bd55b2bfa99c995709"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.01517",
    "kind": "arxiv",
    "version": 1
  }
}