Pith Number

pith:57WMPF3Z

pith:2025:57WMPF3ZRGG254R7RBZFJXJQWK

not attested not anchored not stored refs pending

Search for structural differences in spike glycoprotein variants of SARS-CoV-2: Infrared Spectroscopy, Circular Dichroism and Computational Analysis

Alessandro Nucara, Annalisa D Arco, Nicole Luchetti, Rosanna Mosetti, Salvatore Macis, Stefano Lupi, Tiziana Mancini, Velia Minicozzi

arxiv:2504.19766 v1 · 2025-04-28 · physics.bio-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{57WMPF3ZRGG254R7RBZFJXJQWK}

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	2026-07-05T10:55:02.748337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efecc79779898daef23f887254dd30b2a1cf0425f57ed8ee22b3aecc6706f07f

Aliases

arxiv: 2504.19766 · arxiv_version: 2504.19766v1 · doi: 10.48550/arxiv.2504.19766 · pith_short_12: 57WMPF3ZRGG2 · pith_short_16: 57WMPF3ZRGG254R7 · pith_short_8: 57WMPF3Z

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/57WMPF3ZRGG254R7RBZFJXJQWK \
  | 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: efecc79779898daef23f887254dd30b2a1cf0425f57ed8ee22b3aecc6706f07f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e0041717d643ba4a0eda192ebc2d4d09058e7227bda2cad0a2e3d35ba72f7c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2025-04-28T13:07:00Z",
    "title_canon_sha256": "4dfb44f0db0350e79ff59835f308f4161d381475a7a6efcd875a5d34a04ac7fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.19766",
    "kind": "arxiv",
    "version": 1
  }
}