Changes

Field	Changes	Written by	Latest note
altLabel	2	consensus_match, strip_catalogue_altlabels	Removed 2 catalogue altLabel value(s): 'Aroclor 1260' (trade name), 'PCB 1260' (grade code)
cas_match_labels	1	consensus_match	group_key=pcb-1260\|\|dimension=Environmental > media=Water > water_body=Unknown; group_sources=['pubchem']; cas_sources={'11096-82-5': ['pubchem']}; assigned CAS labels from group consensus; object_uuid=fo-433356b79b431c5a: {'11096-82-5': '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 lower stratosphere and upper troposphere
context_iri	1	default_context_mapping	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to lower stratosphere and upper troposphere
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=['11096-82-5']; matched_chebi_ids=[]; candidate_pubchem_cids=[38018, 163724]; 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
synonyms	1	bootstrap_labels	Removed legacy synonyms field in favor of structured labels
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
8,555	bootstrap_labels	prefLabel	—	[{"@value":"PCB-1260","@language":"en","source":{"prov:wasGeneratedBy":"bootstrap_labels","prov:wasAttributedTo":"conse…	Bootstrapped prefLabel from legacy name field
8,556	bootstrap_labels	name	PCB-1260	—	Purged legacy name field to enforce prefLabel usage
8,557	bootstrap_labels	synonyms	["1,1'-Biphenyl, 2,2',3,3',4,4'-hexachloro-","1,2,3-trichloro-4-(2,3,4-trichlorophenyl)benzene","2,2',3,3',4,4'-HEXACHL…	[]	Removed legacy synonyms field in favor of structured labels
64,171	default_context_mapping	context	—	{"dimension":"Environmental","media":"Air","strata":"Aircraft cruise height"}	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to lower stratosphere and upper troposphere
64,172	default_context_mapping	context_iri	—	https://vocab.brightway.one/flow-contexts/envi-air-aicrhe	Mapped from context mapping for source=EF 3.1, source context Emissions > Emissions to air > Emissions to lower stratosphere and upper troposphere
216,189	unit_normalization	unit_iri	—	https://vocab.brightway.one/units/unit/KiloGM	Unit IRI set from normalization of 'kg'
235,360	enrich_references	skos_definition	—	[]	Merged ChEBI/PubChem definitions into skos:definition
235,361	enrich_references	references	[]	[{"@id":"https://commonchemistry.cas.org/detail?cas_rn=11096-82-5","provenance":{"prov:wasGeneratedBy":"enrich_referenc…	Added references with provenance; cas_numbers=['11096-82-5']; matched_chebi_ids=[]; candidate_pubchem_cids=[38018, 163724]; 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
270,381	consensus_match	altLabel	[]	[{"@value":"Aroclor 1260","@language":"en","source":{"prov:wasGeneratedBy":"consensus_match","prov:wasAttributedTo":"co…	group_key=pcb-1260\|\|dimension=Environmental > media=Water > water_body=Unknown; cas=11096-82-5; added Common Chemistry CAS names as altLabel: Aroclor 1260, PCB 1260; object_uuid=fo-433356b79b431c5a
270,382	consensus_match	cas_match_labels	—	{"11096-82-5":"exactMatch"}	group_key=pcb-1260\|\|dimension=Environmental > media=Water > water_body=Unknown; group_sources=['pubchem']; cas_sources={'11096-82-5': ['pubchem']}; assigned CAS labels from group consensus; object_uuid=fo-433356b79b431c5a: {'11096-82-5': 'exactMatch'}
289,035	strip_catalogue_altlabels	altLabel	[{"@value":"Aroclor 1260","@language":"en","source":{"prov:wasGeneratedBy":"consensus_match","prov:wasAttributedTo":"co…	[]	Removed 2 catalogue altLabel value(s): 'Aroclor 1260' (trade name), 'PCB 1260' (grade code)
313,142	carry_associations_onto_flows	concept_associations	[]	[{"@type":"xkos:ConceptAssociation","xkos:sourceConcept":{"@id":"https://vocab.brightway.one/ef/3.1/flow/29066265-6556-…	associations resolved on the elementary layer
397,709	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/20260920T1042228874600000/8555	prefLabel	ef:agent/bootstrap_labels	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v0	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v1
ef:activity/change/20260920T1042228874600000/8556	name	ef:agent/bootstrap_labels	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v1	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v2
ef:activity/change/20260920T1042228874600000/8557	synonyms	ef:agent/bootstrap_labels	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v2	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v3
ef:activity/change/20260920T1042228874600000/64171	context	ef:agent/default_context_mapping	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v3	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v4
ef:activity/change/20260920T1042228874600000/64172	context_iri	ef:agent/default_context_mapping	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v4	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v5
ef:activity/change/20260920T1042228874600000/216189	unit_iri	ef:agent/unit_normalization	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v5	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v6
ef:activity/change/20260920T1042228874600000/235360	skos_definition	ef:agent/enrich_references	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v6	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v7
ef:activity/change/20260920T1042228874600000/235361	references	ef:agent/enrich_references	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v7	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v8
ef:activity/change/20260920T1042228874600000/270381	altLabel	ef:agent/consensus_match	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v8	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v9
ef:activity/change/20260920T1042228874600000/270382	cas_match_labels	ef:agent/consensus_match	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v9	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v10
ef:activity/change/20260920T1042228874600000/289035	altLabel	ef:agent/strip_catalogue_altlabels	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v10	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v11
ef:activity/change/20260920T1042228874600000/313142	concept_associations	ef:agent/carry_associations_onto_flows	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v11	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v12
ef:activity/change/20260920T1042228874600000/397709	types	ef:agent/link_flows_to_their_substance	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v12	ef:flow/29066265-6556-11dd-ad8b-0800200c9a66/v13

PCB-1260

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Changes

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