Pith Number

pith:2G4LK2CG

pith:2021:2G4LK2CGHB5PZG6IGR4DKOUVNK

not attested not anchored not stored refs pending

Simulating hyperbolic space on a circuit board

Achim Vollhardt, Alexander Stegmaier, Ching Hua Lee, Hauke Brand, Igor Boettcher, Lavi K. Upreti, Martin Greiter, Patrick M. Lenggenhager, Ronny Thomale, Stefan Imhof, Titus Neupert, Tobias Helbig, Tobias Hofmann, Tobias Kie{\ss}ling, Tom\'a\v{s} Bzdu\v{s}ek

arxiv:2109.01148 v2 · 2021-09-02 · cond-mat.other · cond-mat.mes-hall · physics.app-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{2G4LK2CGHB5PZG6IGR4DKOUVNK}

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	2026-07-05T04:51:38.523760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1b8b56846387afc9bc83478353a956aa7777897e5e2005c7b1ff27525ecfd29

Aliases

arxiv: 2109.01148 · arxiv_version: 2109.01148v2 · doi: 10.48550/arxiv.2109.01148 · pith_short_12: 2G4LK2CGHB5P · pith_short_16: 2G4LK2CGHB5PZG6I · pith_short_8: 2G4LK2CG

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/2G4LK2CGHB5PZG6IGR4DKOUVNK \
  | 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: d1b8b56846387afc9bc83478353a956aa7777897e5e2005c7b1ff27525ecfd29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84305aee3a370e59a8c91f60751378025861553e2c9b4d5f81effca69a8fd69b",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "physics.app-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cond-mat.other",
    "submitted_at": "2021-09-02T18:00:03Z",
    "title_canon_sha256": "a81aaf96f7a66a25d9ca8e4540fa2928072eef16547290c438f858579eb4c8e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.01148",
    "kind": "arxiv",
    "version": 2
  }
}