Pith Number

pith:PTY4WYDK

pith:2023:PTY4WYDKGZWWPRQ3Y3LIBF662Y

not attested not anchored not stored refs pending

Long-lived quantum memory enabling atom-photon entanglement over 101 km telecom fiber

Christoph Becher, Florian Fertig, Harald Weinfurter, Matthias Bock, Pooja Malik, Tim van Leent, Tobias Bauer, Wei Zhang, Yiru Zhou

arxiv:2308.08892 v2 · 2023-08-17 · 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{PTY4WYDKGZWWPRQ3Y3LIBF662Y}

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	2026-07-05T06:43:05.823455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cf1cb606a366d67c61bc6d68097ded605db5a6adf509ac44db6f0cfb5e5d527

Aliases

arxiv: 2308.08892 · arxiv_version: 2308.08892v2 · doi: 10.48550/arxiv.2308.08892 · pith_short_12: PTY4WYDKGZWW · pith_short_16: PTY4WYDKGZWWPRQ3 · pith_short_8: PTY4WYDK

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/PTY4WYDKGZWWPRQ3Y3LIBF662Y \
  | 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: 7cf1cb606a366d67c61bc6d68097ded605db5a6adf509ac44db6f0cfb5e5d527

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "240f5edc603f522ed0f4d572b69917f2a5307fdcbb59cd9d37c0ecbdd44cc595",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2023-08-17T10:00:22Z",
    "title_canon_sha256": "3ddfbb57a05832f39dd952e1603da008d1eb57f47e8947fa8c1ed7e1fd4f8e42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2308.08892",
    "kind": "arxiv",
    "version": 2
  }
}