Pith Number

pith:OI43VF3W

pith:2009:OI43VF3WTM3XJZTW4C3ANSOV2U

not attested not anchored not stored refs pending

Acoustic characterization of Hofstadter butterfly with resonant scatterers

Olivier Richoux (LAUM), Vincent Pagneux (LAUM)

arxiv:0907.2517 v1 · 2009-07-15 · physics.class-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{OI43VF3WTM3XJZTW4C3ANSOV2U}

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	2026-05-18T02:13:02.968070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7239ba97769b3774e676e0b606c9d5d52cb818170e5a0e70b347235dbd0fac1c

Aliases

arxiv: 0907.2517 · arxiv_version: 0907.2517v1 · doi: 10.48550/arxiv.0907.2517 · pith_short_12: OI43VF3WTM3X · pith_short_16: OI43VF3WTM3XJZTW · pith_short_8: OI43VF3W

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/OI43VF3WTM3XJZTW4C3ANSOV2U \
  | 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: 7239ba97769b3774e676e0b606c9d5d52cb818170e5a0e70b347235dbd0fac1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1412c564f15006d448993032b9939d8c20c4a030dd72080b8a12f7c20868017",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2009-07-15T08:03:22Z",
    "title_canon_sha256": "43b150ad2c4bc9b698976ae283ded6d9489fffdad5e9fc34441660eee6106589"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2517",
    "kind": "arxiv",
    "version": 1
  }
}