Pith Number

pith:VBTF34UL

pith:2020:VBTF34ULEUTE4CM6SJHB2FPSBJ

not attested not anchored not stored refs pending

Electrically injected GeSn lasers on Si operating up to 100 K

Baohua Li, Gregory Salamo, Greg Sun, Grey Abernathy, Huong Tran, Jifeng Liu, Joe Margetis, John Tolle, Joshua M. Grant, Richard A. Soref, Shui-Qing Yu, Solomon Ojo, Sylvester Amoah, Wei Du, Yiyin Zhou, Yong-Hang Zhang, Yuanhao Miao

arxiv:2004.09402 v1 · 2020-04-20 · physics.app-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{VBTF34ULEUTE4CM6SJHB2FPSBJ}

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	2026-07-05T00:56:15.497300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8665df28b25264e099e924e1d15f20a708dc8aa7a6db05d59c860097505d601

Aliases

arxiv: 2004.09402 · arxiv_version: 2004.09402v1 · doi: 10.48550/arxiv.2004.09402 · pith_short_12: VBTF34ULEUTE · pith_short_16: VBTF34ULEUTE4CM6 · pith_short_8: VBTF34UL

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/VBTF34ULEUTE4CM6SJHB2FPSBJ \
  | 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: a8665df28b25264e099e924e1d15f20a708dc8aa7a6db05d59c860097505d601

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e9a2adb425d47b406a2ef388a4068a5bc776357ff971be7738324eaf2c3772",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2020-04-20T15:57:37Z",
    "title_canon_sha256": "61057c8a032cc59de7e96dffcae59b02f25b9a4e0671ab313d756987eb231b49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.09402",
    "kind": "arxiv",
    "version": 1
  }
}