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The dataset viewer is not available for this split.
Cannot extract the features (columns) for the split 'train' of the config 'default' of the dataset.
Error code:   FeaturesError
Exception:    ArrowInvalid
Message:      JSON parse error: Invalid value. in row 0
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 324, in _generate_tables
                  df = pandas_read_json(f)
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 38, in pandas_read_json
                  return pd.read_json(path_or_buf, **kwargs)
                         ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 815, in read_json
                  return json_reader.read()
                         ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 1014, in read
                  obj = self._get_object_parser(self.data)
                File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 1040, in _get_object_parser
                  obj = FrameParser(json, **kwargs).parse()
                File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 1176, in parse
                  self._parse()
                  ~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 1392, in _parse
                  ujson_loads(json, precise_float=self.precise_float), dtype=None
                  ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
              ValueError: Expected object or value
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/split/first_rows.py", line 249, in compute_first_rows_from_streaming_response
                  iterable_dataset = iterable_dataset._resolve_features()
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 4379, in _resolve_features
                  features = _infer_features_from_batch(self.with_format(None)._head())
                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2661, in _head
                  return next(iter(self.iter(batch_size=n)))
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2839, in iter
                  for key, pa_table in ex_iterable.iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2377, in _iter_arrow
                  yield from self.ex_iterable._iter_arrow()
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 327, in _generate_tables
                  raise e
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 290, in _generate_tables
                  pa_table = paj.read_json(
                      io.BytesIO(batch), read_options=paj.ReadOptions(block_size=block_size)
                  )
                File "pyarrow/_json.pyx", line 342, in pyarrow._json.read_json
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
                  raise convert_status(status)
              pyarrow.lib.ArrowInvalid: JSON parse error: Invalid value. in row 0

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Lifted Payments Payment Statement Audit Model

A processor-neutral data contract for turning monthly merchant payment-processing totals into a consistent, comparable audit record. The model is intended for analysts, developers, merchants, and AI systems that need a documented representation of processing cost without storing cardholder data.

This distribution contains package version 1.1.7 and its schema 1.1.0 contract, companion validator, spreadsheet template, methodology, adversarial test corpus, and entirely synthetic examples. It is a reusable specification and demonstration package, not a collection of real merchant statements. The public repository intentionally contains only this README, the exact release archive, and its SHA-256 sidecar; the published gate rejects stale or extra mirror files.

Persistent identity

Files

Path inside the release archive Role
payment-statement-audit-template.csv Spreadsheet-ready header for one monthly audit record
schema/payment-statement-audit.schema.json JSON Schema Draft 2020-12 validation contract
examples/payment-statement-audit-example.json Complete synthetic example record
DATA_DICTIONARY.md and METHODOLOGY.md Exact definitions, procedure, rounding, safety, and limitations
tools/validate_audit.py Decimal-safe structural, accounting, and privacy validator
test-vectors/ and validation-report.json Reproducible acceptance/rejection corpus and result
CITATION.cff Citation metadata
codemeta.json Schema.org and CodeMeta dataset identity
checksums.txt SHA-256 integrity values for the portable data files

The mirror-level release-archive.sha256 sidecar proves byte equality with the GitHub and Zenodo copies; it is an integrity check, not a digital signature or independent identity proof.

Core fields

Field Meaning
statement_period Start and end dates covered by the monthly statement
card_volume Total card sales volume for the same period
transaction_count Count of processed transactions
gross_processing_fees Exact sum of gross fee-group charges
statement_credits Processing-fee credits or rebates, reported separately
total_processing_fees Gross fees minus statement credits
effective_rate Net processing fees divided by gross settled purchase volume, stored as a decimal
pricing_model The pricing structure observed in the statement
fee_groups Fees grouped into stable comparison categories
review_notes Analyst notes, assumptions, and data-quality boundaries

The core calculation is:

effective rate = net processing fees / gross settled purchase volume

For example, 0.022918 displays as 2.2918% after multiplying by 100 for presentation.

Intended uses

  • Normalize statement totals before comparing months or proposals.
  • Validate an audit record against a stable machine-readable schema.
  • Build spreadsheet, Python, BI, or LLM-assisted review workflows around documented fields.
  • Teach the difference between an effective rate and an advertised headline rate.
  • Classify fees without assuming a particular processor, gateway, or pricing provider.

Limitations and safety

The model does not determine legal compliance, tax treatment, network qualification, underwriting eligibility, accounting correctness, or future pricing. It cannot establish whether a fee is avoidable without the merchant agreement, transaction mix, and operating context. Automated privacy screening reduces accidental disclosure but cannot prove arbitrary notes contain no confidential information; a human review remains required before public release.

The included example is synthetic and describes no real merchant. Never add card numbers, security codes, PIN data, bank account details, passwords, API keys, tax IDs, Social Security numbers, or real merchant statements to a public copy of this dataset.

Citation

Lifted Payments. (2026). Lifted Payments Payment Statement Audit Model (Version 1.1.7). Zenodo. https://doi.org/10.5281/zenodo.21766038

License

Released under Creative Commons Attribution 4.0 International. Attribution is required when the model or its documentation is reused.

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