Pith Number

pith:4XFJVS3O

pith:2018:4XFJVS3O3XLHH2WVGPFVEKLHRZ

not attested not anchored not stored refs pending

Analytical model for the intensity dependence of 1500 nm to 980 nm upconversion in Er$^{3+}$: a new tool for material characterization

Brian Julsgaard, Emil Eriksen, Harish Lakhotiya, Jeppe Christiansen, Peter Balling, S{\o}ren P. Madsen

arxiv:1809.03908 v1 · 2018-09-11 · 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{4XFJVS3O3XLHH2WVGPFVEKLHRZ}

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	2026-05-17T23:53:28.786350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5ca9acb6eddd673ead533cb5229678e71dea9b2be672707be51aedcede4472a

Aliases

arxiv: 1809.03908 · arxiv_version: 1809.03908v1 · doi: 10.48550/arxiv.1809.03908 · pith_short_12: 4XFJVS3O3XLH · pith_short_16: 4XFJVS3O3XLHH2WV · pith_short_8: 4XFJVS3O

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/4XFJVS3O3XLHH2WVGPFVEKLHRZ \
  | 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: e5ca9acb6eddd673ead533cb5229678e71dea9b2be672707be51aedcede4472a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e69baba4f71e11bab9759de5438da2d14c780a76295553a3c2594c2f112b0bf9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2018-09-11T14:04:54Z",
    "title_canon_sha256": "840c09b39418974a45db9621545dc8c86940821fa97a6ff03c30906000709331"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03908",
    "kind": "arxiv",
    "version": 1
  }
}