Pith Number

pith:EXTKEBLK

pith:2026:EXTKEBLK5CFNES6EQIMTD7YWJV

not attested not anchored not stored refs pending

PIDT: Physics-Informed Digital Twin for Optical Fiber Parameter Estimation

Christian H\"ager, Erik Agrell, Magnus Karlsson, Zicong Jiang

arxiv:2601.07436 v1 · 2026-01-12 · eess.SP · cs.LG · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXTKEBLK5CFNES6EQIMTD7YWJV}

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	2026-06-11T01:09:26.472709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25e6a2056ae88ad24bc4821931ff164d598e8687eabdbbdab5bc61bd253a4c4e

Aliases

arxiv: 2601.07436 · arxiv_version: 2601.07436v1 · doi: 10.48550/arxiv.2601.07436 · pith_short_12: EXTKEBLK5CFN · pith_short_16: EXTKEBLK5CFNES6E · pith_short_8: EXTKEBLK

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/EXTKEBLK5CFNES6EQIMTD7YWJV \
  | 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: 25e6a2056ae88ad24bc4821931ff164d598e8687eabdbbdab5bc61bd253a4c4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d52d5f9db31ccb5cbb6fae8df950176934916d6a66623e54e00163172ece49a",
    "cross_cats_sorted": [
      "cs.LG",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-01-12T11:25:31Z",
    "title_canon_sha256": "863ebd7f4eaf1ff83e4697441c7e15b132d74cd3ab19b190b8a961fcba305718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.07436",
    "kind": "arxiv",
    "version": 1
  }
}