Pith Number

pith:YW4WCUNC

pith:1997:YW4WCUNC4LXA3FQWSG3AA2RL7T

not attested not anchored not stored refs pending

Quantum privacy and quantum coherence

Benjamin Schumacher, Michael D. Westmoreland

arxiv:quant-ph/9709058 v2 · 1997-09-30 · 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{YW4WCUNC4LXA3FQWSG3AA2RL7T}

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	2026-07-04T16:06:31.517613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5b96151a2e2ee0d961691b6006a2bfcecfb77ae899abeb648ad590a1418e8d7

Aliases

arxiv: quant-ph/9709058 · arxiv_version: quant-ph/9709058v2 · doi: 10.48550/arxiv.quant-ph/9709058 · pith_short_12: YW4WCUNC4LXA · pith_short_16: YW4WCUNC4LXA3FQW · pith_short_8: YW4WCUNC

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/YW4WCUNC4LXA3FQWSG3AA2RL7T \
  | 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: c5b96151a2e2ee0d961691b6006a2bfcecfb77ae899abeb648ad590a1418e8d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22ce0b6171534ade6d1b47bbbb19e31f3c19bd383641b78f7dfd1552b610199b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1997-09-30T21:22:00Z",
    "title_canon_sha256": "d9528f61615de0d3b00171a613face991d4ac5bde6c1662e012be1960ba80063"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9709058",
    "kind": "arxiv",
    "version": 2
  }
}