Pith Number

pith:NWCDGGXA

pith:2011:NWCDGGXAW77KMDKZI43USKV4BX

not attested not anchored not stored refs pending

Demonstration of reversible phase-insensitive optical amplifier

Akira Furusawa, Jun-ichi Yoshikawa, Radim Filip, Yoshichika Miwa

arxiv:1101.1139 v1 · 2011-01-06 · 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{NWCDGGXAW77KMDKZI43USKV4BX}

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	2026-05-18T04:21:22.404007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d84331ae0b7fea60d594737492abc0dccec2089f07034a5e811af56fa2ba6b9

Aliases

arxiv: 1101.1139 · arxiv_version: 1101.1139v1 · doi: 10.48550/arxiv.1101.1139 · pith_short_12: NWCDGGXAW77K · pith_short_16: NWCDGGXAW77KMDKZ · pith_short_8: NWCDGGXA

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/NWCDGGXAW77KMDKZI43USKV4BX \
  | 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: 6d84331ae0b7fea60d594737492abc0dccec2089f07034a5e811af56fa2ba6b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5af350afc25afe4d839f47c2924a552f4e75b1d0415dc3d3bd942e6107f82fd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-01-06T04:51:05Z",
    "title_canon_sha256": "9e971c7afea4417597d78727571bdccc007c14a88838ef91083d8ec451346758"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1139",
    "kind": "arxiv",
    "version": 1
  }
}