Pith Number

pith:I2HOAC4G

pith:2014:I2HOAC4GHWM4KOOYMGDNVFVTNA

not attested not anchored not stored refs pending

Quantum Key Distribution without sending a Quantum Signal

N. Walk, T.C. Ralph

arxiv:1409.2061 v1 · 2014-09-06 · quant-ph

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

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	2026-05-18T02:43:18.001149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

468ee00b863d99c539d86186da96b368128a1810476f5b5942915007d855a03c

Aliases

arxiv: 1409.2061 · arxiv_version: 1409.2061v1 · doi: 10.48550/arxiv.1409.2061 · pith_short_12: I2HOAC4GHWM4 · pith_short_16: I2HOAC4GHWM4KOOY · pith_short_8: I2HOAC4G

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/I2HOAC4GHWM4KOOYMGDNVFVTNA \
  | 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: 468ee00b863d99c539d86186da96b368128a1810476f5b5942915007d855a03c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71a9aeadedc661f109072158b37d5a76506a29da738cd2d8c850ffc6ba80c3c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-09-06T21:47:32Z",
    "title_canon_sha256": "d3df0502bea5199b8b2a23321318c399ee3754cb4c24fa38a6824d77cec41aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2061",
    "kind": "arxiv",
    "version": 1
  }
}