Pith Number

pith:76MYXCHC

pith:2003:76MYXCHCSR5ZTAAFRBYIKBHSDP

not attested not anchored not stored refs pending

All information-theoretically secure key establishing protocols are quantum protocols

Mario Stipcevic

arxiv:quant-ph/0309145 v4 · 2003-09-19 · 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{76MYXCHCSR5ZTAAFRBYIKBHSDP}

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	2026-07-04T14:46:24.822400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff998b88e2947b99800588708504f21bf82c3bf0dc8b7d2a861e21aac957fdd2

Aliases

arxiv: quant-ph/0309145 · arxiv_version: quant-ph/0309145v4 · doi: 10.48550/arxiv.quant-ph/0309145 · pith_short_12: 76MYXCHCSR5Z · pith_short_16: 76MYXCHCSR5ZTAAF · pith_short_8: 76MYXCHC

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/76MYXCHCSR5ZTAAFRBYIKBHSDP \
  | 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: ff998b88e2947b99800588708504f21bf82c3bf0dc8b7d2a861e21aac957fdd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31ace2dcf2fdbc250e5b9f3a48974d651286d759a55ff3d0dfdd65554f19c750",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-09-19T10:14:23Z",
    "title_canon_sha256": "eb670ea33a39a0ae096c4b42a4f16698d9ba29ad5839ba29b4f029ce608972f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0309145",
    "kind": "arxiv",
    "version": 4
  }
}