Pith Number

pith:YSFJO2AW

pith:2020:YSFJO2AWIYMX4XT2Z7ZS2WMULD

not attested not anchored not stored refs pending

Observation of Two-Vertex Four-Dimensional Spin Foam Amplitudes with a 10-qubit Superconducting Quantum Processor

Chao Song, Hang Dong, Haohua Wang, Li Hekang, Muxin Han, Pengfei Zhang, Qiujiang Guo, Yidun Wan, Zhen Wang, Zichang Huang, Zixuan Song

arxiv:2007.13682 v1 · 2020-07-27 · quant-ph · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSFJO2AWIYMX4XT2Z7ZS2WMULD}

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	2026-07-05T01:22:26.773643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c48a97681646197e5e7acff32d599458eaa53dd947abd28b0004c11375a79f00

Aliases

arxiv: 2007.13682 · arxiv_version: 2007.13682v1 · doi: 10.48550/arxiv.2007.13682 · pith_short_12: YSFJO2AWIYMX · pith_short_16: YSFJO2AWIYMX4XT2 · pith_short_8: YSFJO2AW

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/YSFJO2AWIYMX4XT2Z7ZS2WMULD \
  | 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: c48a97681646197e5e7acff32d599458eaa53dd947abd28b0004c11375a79f00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0328a971d219a2931090f7448bfd38bd14b3a978e0414acaf25b6cf3c0eac049",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-07-27T16:50:49Z",
    "title_canon_sha256": "0423f325b8375e29497a9b8343f07aebfb1246e4502e8ecaf9243bb5f4d7c599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.13682",
    "kind": "arxiv",
    "version": 1
  }
}