Pith Number

pith:YWKUDTR5

pith:2020:YWKUDTR5WRVXL5ADWBWUI7V52H

not attested not anchored not stored refs pending

Capacity-approaching quantum repeaters for quantum communications

Masoud Ghalaii, Stefano Pirandola

arxiv:2007.06988 v3 · 2020-07-14 · 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{YWKUDTR5WRVXL5ADWBWUI7V52H}

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	2026-07-05T01:59:31.149301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c59541ce3db46b75f403b06d447ebdd1ef55c84401ebd99ebd5a744fd2c1ede1

Aliases

arxiv: 2007.06988 · arxiv_version: 2007.06988v3 · doi: 10.48550/arxiv.2007.06988 · pith_short_12: YWKUDTR5WRVX · pith_short_16: YWKUDTR5WRVXL5AD · pith_short_8: YWKUDTR5

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/YWKUDTR5WRVXL5ADWBWUI7V52H \
  | 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: c59541ce3db46b75f403b06d447ebdd1ef55c84401ebd99ebd5a744fd2c1ede1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2d91befca4469b047fa33dd1e33bd4735ec947e0f4b299fca75470bb9830b71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-07-14T12:10:11Z",
    "title_canon_sha256": "66e8324504cd617f4c6247ec9590bc7f5b5e341777464199aa08fc6658c2fb63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.06988",
    "kind": "arxiv",
    "version": 3
  }
}