Pith Number

pith:65V4NQGJ

pith:2013:65V4NQGJNXZ2KNQXWWSGHGAMF7

not attested not anchored not stored refs pending

Practical method to obtain a lower bound to the three-tangle

Christopher Eltschka, Jens Siewert

arxiv:1310.8311 v2 · 2013-10-30 · 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{65V4NQGJNXZ2KNQXWWSGHGAMF7}

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	2026-05-18T02:56:21.015232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f76bc6c0c96df3a53617b5a463980c2ff890bd85af22a08b6081b786f0391edc

Aliases

arxiv: 1310.8311 · arxiv_version: 1310.8311v2 · doi: 10.48550/arxiv.1310.8311 · pith_short_12: 65V4NQGJNXZ2 · pith_short_16: 65V4NQGJNXZ2KNQX · pith_short_8: 65V4NQGJ

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/65V4NQGJNXZ2KNQXWWSGHGAMF7 \
  | 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: f76bc6c0c96df3a53617b5a463980c2ff890bd85af22a08b6081b786f0391edc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b56a93a0d09b9cc3d75df0c89596bb3660e6456e7eb69f126e353fca2e24353",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-10-30T20:13:08Z",
    "title_canon_sha256": "c6ee793a77a9b08482bad1891da48243761f6deedc449d582b8bfcec2924f46c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.8311",
    "kind": "arxiv",
    "version": 2
  }
}