Changes

Field	Changes	Written by	Latest note
cas_match_labels	1	consensus_match	group_key=hg-21\|\|dimension=Environmental > media=Air > strata=Unknown; group_sources=[]; cas_sources={'249932-26-1': []}; assigned CAS labels from group consensus; object_uuid=fo-d731992fb134968a: {'249932-26-1': 'exactMatch'}
concept_associations	1	carry_associations_onto_flows	associations resolved on the elementary layer
context	1	default_context_mapping	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
context_iri	1	default_context_mapping	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
name	1	bootstrap_labels	Purged legacy name field to enforce prefLabel usage
prefLabel	1	bootstrap_labels	Bootstrapped prefLabel from legacy name field
references	1	enrich_references	Added references with provenance; cas_numbers=['249932-26-1']; matched_chebi_ids=[]; candidate_pubchem_cids=[]; selected_pubchem_cids=[]; formula_similarity_expected=[]; pubchem_selection_rule=curated_cas_then_formula_similarity_then_prefer_chebi_aligned_when_unambiguous_else_keep_all_cas_matches; single_cas_commonchem_link=yes
skos_definition	1	enrich_references	Merged ChEBI/PubChem definitions into skos:definition
types	1	link_flows_to_their_substance	the substance's answer, copied onto its flow
unit_iri	1	unit_normalization	Unit IRI set from normalization of 'kg'

Where several steps wrote one field, the last one won — and the log below shows the sequence.

#	Step	Field	From	To	Why
24,448	bootstrap_labels	prefLabel	—	[{"@value":"HG-21","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:wasAttributedTo":"consensu…	Bootstrapped prefLabel from legacy name field
24,449	bootstrap_labels	name	HG-21	—	Purged legacy name field to enforce prefLabel usage
141,900	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Ground level","population_density":"Urban (>1000 people/square mil…	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
141,901	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-grle-ur10pesq	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to urban air close to ground
220,833	unit_normalization	unit_iri	—	https://vocab.brightway.one/units/unit/KiloGM	Unit IRI set from normalization of 'kg'
248,056	enrich_references	skos_definition	—	[]	Merged ChEBI/PubChem definitions into skos:definition
248,057	enrich_references	references	[]	[{"@id":"https://commonchemistry.cas.org/detail?cas_rn=249932-26-1","provenance":{"prov:wasGeneratedBy":"enrich_referen…	Added references with provenance; cas_numbers=['249932-26-1']; matched_chebi_ids=[]; candidate_pubchem_cids=[]; selected_pubchem_cids=[]; formula_similarity_expected=[]; pubchem_selection_rule=curated_cas_then_formula_similarity_then_prefer_chebi_aligned_when_unambiguous_else_keep_all_cas_matches; single_cas_commonchem_link=yes
267,804	consensus_match	cas_match_labels	—	{"249932-26-1":"exactMatch"}	group_key=hg-21\|\|dimension=Environmental > media=Air > strata=Unknown; group_sources=[]; cas_sources={'249932-26-1': []}; assigned CAS labels from group consensus; object_uuid=fo-d731992fb134968a: {'249932-26-1': 'exactMatch'}
351,953	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/9ae40c6c-e251-…	associations resolved on the elementary layer
403,421	link_flows_to_their_substance	types	—	["https://w3id.org/chemrof/ImpreciseChemicalMixture"]	the substance's answer, copied onto its flow

One activity per change: which version of the flow it consumed, and which it produced. The values are on the change with the same number — stored once, not twice.

Activity	Field	Agent	Used	Generated
ef:activity/change/20260822T0600486828500000/24448	prefLabel	ef:agent/bootstrap_labels	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v0	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v1
ef:activity/change/20260822T0600486828500000/24449	name	ef:agent/bootstrap_labels	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v1	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v2
ef:activity/change/20260822T0600486828500000/141900	context	ef:agent/default_context_mapping	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v2	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v3
ef:activity/change/20260822T0600486828500000/141901	context_iri	ef:agent/default_context_mapping	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v3	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v4
ef:activity/change/20260822T0600486828500000/220833	unit_iri	ef:agent/unit_normalization	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v4	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v5
ef:activity/change/20260822T0600486828500000/248056	skos_definition	ef:agent/enrich_references	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v5	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v6
ef:activity/change/20260822T0600486828500000/248057	references	ef:agent/enrich_references	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v6	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v7
ef:activity/change/20260822T0600486828500000/267804	cas_match_labels	ef:agent/consensus_match	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v7	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v8
ef:activity/change/20260822T0600486828500000/351953	concept_associations	ef:agent/carry_associations_onto_flows	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v8	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v9
ef:activity/change/20260822T0600486828500000/403421	types	ef:agent/link_flows_to_their_substance	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v9	ef:flow/9ae40c6c-e251-11e6-bf01-fe55135034f3/v10

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