Pith Number

pith:76DD6WUX

pith:2021:76DD6WUXSD7QPOYDUXLRR7OFLJ

not attested not anchored not stored refs pending

Oxygen Vacancies in Niobium Pentoxide as a Source of Two-Level System Losses in Superconducting Niobium

Akshay Murthy, Alexander Romanenko, Anna Grassellino, Daniel Bafia

arxiv:2108.13352 v4 · 2021-08-30 · physics.app-ph · quant-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{76DD6WUXSD7QPOYDUXLRR7OFLJ}

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	2026-07-05T10:47:23.175205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff863f5a9790ff07bb03a5d718fdc55a4c91e902280d1d803bac96fb834c7294

Aliases

arxiv: 2108.13352 · arxiv_version: 2108.13352v4 · doi: 10.48550/arxiv.2108.13352 · pith_short_12: 76DD6WUXSD7Q · pith_short_16: 76DD6WUXSD7QPOYD · pith_short_8: 76DD6WUX

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/76DD6WUXSD7QPOYDUXLRR7OFLJ \
  | 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: ff863f5a9790ff07bb03a5d718fdc55a4c91e902280d1d803bac96fb834c7294

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5b4808838b5889e9aa8fe9225afd63e6ceb4a994f0d07da2120babbced33f44",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2021-08-30T16:24:07Z",
    "title_canon_sha256": "ac29a1574097895d68c8096149bae239903bd4909b2c2c164710f52ae18e2fb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.13352",
    "kind": "arxiv",
    "version": 4
  }
}