Pith Number

pith:5T4TTHLL

pith:2022:5T4TTHLLCHJAWHPLJHJXGEVTG7

not attested not anchored not stored refs pending

First demonstration of a post-quantum key-exchange with a nanosatellite

Alexander Ling, Ayesha Reezwana, Christoph F. Wildfeuer, Simon M. Burkhardt, Tanvirul Islam, Willi Meier

arxiv:2206.00978 v1 · 2022-06-02 · quant-ph · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5T4TTHLLCHJAWHPLJHJXGEVTG7}

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	2026-07-05T04:28:35.676399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecf9399d6b11d20b1deb49d37312b337c289f2dc0f046131ac922ef990a0b1cc

Aliases

arxiv: 2206.00978 · arxiv_version: 2206.00978v1 · doi: 10.48550/arxiv.2206.00978 · pith_short_12: 5T4TTHLLCHJA · pith_short_16: 5T4TTHLLCHJAWHPL · pith_short_8: 5T4TTHLL

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/5T4TTHLLCHJAWHPLJHJXGEVTG7 \
  | 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: ecf9399d6b11d20b1deb49d37312b337c289f2dc0f046131ac922ef990a0b1cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34cf28a48b4a5b64dab649b455d9237c9e9489c73423d99230877b269b2a0185",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-06-02T10:45:27Z",
    "title_canon_sha256": "7987ba940653660297eb540dd82dcc112c1c8c6e2ce70fd3085bf5cb127bca94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.00978",
    "kind": "arxiv",
    "version": 1
  }
}