Pith Number

pith:OU2X6HWN

pith:2012:OU2X6HWNBF3PQ64NKOZ5S4MJHH

not attested not anchored not stored refs pending

Time-Reversal-Invariant Hofstadter-Hubbard Model with Ultracold Fermions

Daniel Cocks, Karyn Le Hur, Michael Buchhold, Peter P. Orth, Stephan Rachel, Walter Hofstetter

arxiv:1204.4171 v2 · 2012-04-18 · cond-mat.quant-gas · cond-mat.str-el · 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{OU2X6HWNBF3PQ64NKOZ5S4MJHH}

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	2026-05-18T03:40:36.406795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75357f1ecd0976f87b8d53b3d9718939de0e1c61be8f5d72dd94171ba583588c

Aliases

arxiv: 1204.4171 · arxiv_version: 1204.4171v2 · doi: 10.48550/arxiv.1204.4171 · pith_short_12: OU2X6HWNBF3P · pith_short_16: OU2X6HWNBF3PQ64N · pith_short_8: OU2X6HWN

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/OU2X6HWNBF3PQ64NKOZ5S4MJHH \
  | 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: 75357f1ecd0976f87b8d53b3d9718939de0e1c61be8f5d72dd94171ba583588c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "165d8d0cceb351ea35be802dd45005b02d65783ef5e05dce399e29b73ff2a454",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2012-04-18T19:42:17Z",
    "title_canon_sha256": "ab853110d55bd24d5634ca88b12fcc60091ff6c64e73e992a7d810663f63a798"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4171",
    "kind": "arxiv",
    "version": 2
  }
}