Pith Number

pith:J4U5NTZ5

pith:2018:J4U5NTZ5R5HGLQT3HUZALYCWQS

not attested not anchored not stored refs pending

Observation of a space-time crystal in a superfluid quantum gas

Henk Stoof, Jasper Smits, Lei Liao, Peter van der Straten

arxiv:1807.05904 v2 · 2018-07-16 · cond-mat.quant-gas · nlin.PS · 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{J4U5NTZ5R5HGLQT3HUZALYCWQS}

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	2026-05-18T00:01:29.019283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f29d6cf3d8f4e65c27b3d3205e05684a2b2ec86dc69f9311661962673ff92c8

Aliases

arxiv: 1807.05904 · arxiv_version: 1807.05904v2 · doi: 10.48550/arxiv.1807.05904 · pith_short_12: J4U5NTZ5R5HG · pith_short_16: J4U5NTZ5R5HGLQT3 · pith_short_8: J4U5NTZ5

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/J4U5NTZ5R5HGLQT3HUZALYCWQS \
  | 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: 4f29d6cf3d8f4e65c27b3d3205e05684a2b2ec86dc69f9311661962673ff92c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddfab873bc7bdb94a6c3b9928dfdb02e7b7bd23f512bedfdf904ee47dda8e589",
    "cross_cats_sorted": [
      "nlin.PS",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2018-07-16T14:58:50Z",
    "title_canon_sha256": "b8f1d9ba3f5b7ad22a53fe889a0098bde4ee3e4b2d684eafaa8e85923d667c96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05904",
    "kind": "arxiv",
    "version": 2
  }
}