Pith Number

pith:FOHA6VWA

pith:2025:FOHA6VWA4PHTXTOXVW7XU4IUBI

not attested not anchored not stored refs pending

Cryptographic Data Exchange for Nuclear Warheads

Daniil Zhukov, Neil Perry

arxiv:2507.20074 v2 · 2025-07-26 · 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{FOHA6VWA4PHTXTOXVW7XU4IUBI}

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	2026-07-05T12:04:38.823957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b8e0f56c0e3cf3bcdd7adbf7a71140a39bc729180bc4f177630b7d69bcb57f6

Aliases

arxiv: 2507.20074 · arxiv_version: 2507.20074v2 · doi: 10.48550/arxiv.2507.20074 · pith_short_12: FOHA6VWA4PHT · pith_short_16: FOHA6VWA4PHTXTOX · pith_short_8: FOHA6VWA

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/FOHA6VWA4PHTXTOXVW7XU4IUBI \
  | 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: 2b8e0f56c0e3cf3bcdd7adbf7a71140a39bc729180bc4f177630b7d69bcb57f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4680032421d5fbb3eb9950a053ad7137d91efe2d78ea9cb7809ec396856b02ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-07-26T22:16:04Z",
    "title_canon_sha256": "a1ac3cc1854662963b1dc22d505dfc3815f9b472754bcd677dc2cda6f9fbb88b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.20074",
    "kind": "arxiv",
    "version": 2
  }
}