Pith Number

pith:GYQFRF2D

pith:2003:GYQFRF2D5NPZRUS62ORO4ZYTKG

not attested not anchored not stored refs pending

Entanglement distillation for W class states

Ming Yang, Zhuo-Liang Cao

arxiv:quant-ph/0307115 v1 · 2003-07-17 · 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{GYQFRF2D5NPZRUS62ORO4ZYTKG}

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	2026-07-04T14:46:21.660357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3620589743eb5f98d25ed3a2ee671351b99dcd2a0f3b3e0a5347e289c598b3bd

Aliases

arxiv: quant-ph/0307115 · arxiv_version: quant-ph/0307115v1 · doi: 10.48550/arxiv.quant-ph/0307115 · pith_short_12: GYQFRF2D5NPZ · pith_short_16: GYQFRF2D5NPZRUS6 · pith_short_8: GYQFRF2D

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/GYQFRF2D5NPZRUS62ORO4ZYTKG \
  | 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: 3620589743eb5f98d25ed3a2ee671351b99dcd2a0f3b3e0a5347e289c598b3bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "309c57d94d60f1bc7ef649840c875e08f5de874d3e4b317e21efac0a3d442dee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-07-17T08:55:24Z",
    "title_canon_sha256": "31b18dbef288e94fd64f0e319e358beddfaf88d87d58cf0cf6d3a3c4e987a6bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0307115",
    "kind": "arxiv",
    "version": 1
  }
}