Pith Number

pith:GP3ERDQ4

pith:2009:GP3ERDQ4HBEKSN7NJHSVGY3YFP

not attested not anchored not stored refs pending

Quasiperiodic free electron metal layers

A. K. Shukla, D. Wu, J. Hafner, K. Horn, M. Krajci, R. S. Dhaka, Sanjay Singh, S. R. Barman, S. W. Dsouza, T. A. Lograsso

arxiv:0904.0297 v1 · 2009-04-02 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GP3ERDQ4HBEKSN7NJHSVGY3YFP}

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	2026-07-04T15:53:12.823892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33f6488e1c3848a937ed49e55363782bd0a23bd65c122eb25d8970d63fb658ac

Aliases

arxiv: 0904.0297 · arxiv_version: 0904.0297v1 · doi: 10.48550/arxiv.0904.0297 · pith_short_12: GP3ERDQ4HBEK · pith_short_16: GP3ERDQ4HBEKSN7N · pith_short_8: GP3ERDQ4

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/GP3ERDQ4HBEKSN7NJHSVGY3YFP \
  | 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: 33f6488e1c3848a937ed49e55363782bd0a23bd65c122eb25d8970d63fb658ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f222a9c8ccb1f4630ad0a27fa2696d7dde6edf2b05cbf7b79e796159c199365",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2009-04-02T03:11:00Z",
    "title_canon_sha256": "81a42956f07e20491be8b23609fa008616039dbf1d9f5a2acc32f39e8f77c714"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0297",
    "kind": "arxiv",
    "version": 1
  }
}