Pith Number

pith:EXR657GC

pith:2001:EXR657GCQMDENTGFURYPYA3VUR

not attested not anchored not stored refs pending

Extracting Quantum Entanglement (General Entanglement Purification Protocols)

Andris Ambainis, Ke Yang

arxiv:quant-ph/0110011 v2 · 2001-10-01 · 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{EXR657GCQMDENTGFURYPYA3VUR}

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	2026-07-04T14:45:42.536957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25e3eefcc2830646ccc5a470fc0375a44a92cc113c6011c4217632f00b75f775

Aliases

arxiv: quant-ph/0110011 · arxiv_version: quant-ph/0110011v2 · doi: 10.48550/arxiv.quant-ph/0110011 · pith_short_12: EXR657GCQMDE · pith_short_16: EXR657GCQMDENTGF · pith_short_8: EXR657GC

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/EXR657GCQMDENTGFURYPYA3VUR \
  | 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: 25e3eefcc2830646ccc5a470fc0375a44a92cc113c6011c4217632f00b75f775

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "792faddd36b3db1d5345d8f758c6cfacd2d595f23250d8b9b066001d4cbbb38c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-10-01T19:21:39Z",
    "title_canon_sha256": "c79782607090fc5b48676d1220ba55651da3aa2be7d95c82c2863d86b6ddff15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0110011",
    "kind": "arxiv",
    "version": 2
  }
}