Pith Number

pith:4X7VLABS

pith:2025:4X7VLABS5BSYPGFNL5DSNKATHR

not attested not anchored not stored refs pending

First-principles phonon physics using the Pheasy code

Ben Xu, Changpeng Lin, Jian Han, Nicola Marzari

arxiv:2508.01020 v1 · 2025-08-01 · cond-mat.mtrl-sci · physics.comp-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{4X7VLABS5BSYPGFNL5DSNKATHR}

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	2026-07-05T11:48:06.929044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5ff558032e8658798ad5f4726a8133c793e9a03dee38573d991060e15d1dea2

Aliases

arxiv: 2508.01020 · arxiv_version: 2508.01020v1 · doi: 10.48550/arxiv.2508.01020 · pith_short_12: 4X7VLABS5BSY · pith_short_16: 4X7VLABS5BSYPGFN · pith_short_8: 4X7VLABS

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/4X7VLABS5BSYPGFNL5DSNKATHR \
  | 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: e5ff558032e8658798ad5f4726a8133c793e9a03dee38573d991060e15d1dea2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c72f38a0356c5d96dfed370c7fb627cef180c31b0c415f81c19116ba7e3d439",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2025-08-01T18:45:12Z",
    "title_canon_sha256": "4a630a77afd5aab9e07be2bbcdf300e1048b27aa2c5d0daac828526fc431fca9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.01020",
    "kind": "arxiv",
    "version": 1
  }
}