Pith Number

pith:AKJE4PWM

pith:2019:AKJE4PWMUCBT3UTCTBOS63GKS4

not attested not anchored not stored refs pending

Spectrally uncorrelated biphotons generated from `the family of BBO crystal'

Chunling Ding, Feng Mei, Guang-Wei Deng, Qiang Zhou, Rui-Bo Jin, Ryosuke Shimizu, Wu-Hao Cai

arxiv:1912.02497 v1 · 2019-12-05 · 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{AKJE4PWMUCBT3UTCTBOS63GKS4}

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	2026-07-05T01:15:37.210868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02924e3ecca0833dd262985d2f6cca972335cc4cfefb84999fa49540922e253b

Aliases

arxiv: 1912.02497 · arxiv_version: 1912.02497v1 · doi: 10.48550/arxiv.1912.02497 · pith_short_12: AKJE4PWMUCBT · pith_short_16: AKJE4PWMUCBT3UTC · pith_short_8: AKJE4PWM

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/AKJE4PWMUCBT3UTCTBOS63GKS4 \
  | 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: 02924e3ecca0833dd262985d2f6cca972335cc4cfefb84999fa49540922e253b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca4551363e1ce45f174a4ba27bb1ae4bc4f2a2f20b5ea333bb06e02465681a55",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-12-05T10:52:43Z",
    "title_canon_sha256": "bafab19a338656e3297336476fb2cc9758eba81f305e7f0e77bb4f0b54513970"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.02497",
    "kind": "arxiv",
    "version": 1
  }
}