diff --git a/common/proto/ecb.proto b/common/proto/ecb.proto
index 4e3a2da9..6c679df2 100644
--- a/common/proto/ecb.proto
+++ b/common/proto/ecb.proto
@@ -148,7 +148,7 @@ message PreviewEcbConversionRequest {
 message PreviewEcbConversionResponse {
   string original_amount = 1;
   string original_currency = 2;
-  string eur_amount = 3;
+  string converted_amount = 3;
   string conversion_basis_date = 4;
   string determination_method = 5;
   string rounding_method = 6;
@@ -174,6 +174,17 @@ message PreviewEcbConversionResponse {
   ExchangeRateDateRule applied_date_rule = 19;
   ExchangeRateSource applied_source = 20;
   string selection_reason = 21;
+
+  // The currency converted_amount is stated in: the profile's accounting
+  // currency (EUR unless the profile keeps its books in something else).
+  string converted_currency = 22;
+
+  // True when reaching converted_currency needed two hops (original currency
+  // to EUR, then EUR to converted_currency) because neither is EUR. The
+  // fields above then describe only the second, final hop; the full
+  // provenance of both hops is available from ListEcbConversionEvidence
+  // after posting.
+  bool via_two_hop_conversion = 23;
 }
 
 // Identify one logical money cell whose conversion history should be inspected.
@@ -206,7 +217,7 @@ message EcbConversionEvidence {
   int64 row_revision = 2;
   string original_amount = 3;
   string original_currency = 4;
-  string eur_amount = 5;
+  string converted_amount = 5;
   string conversion_context = 6;
   string conversion_basis_date = 7;
   string determination_method = 8;
@@ -232,6 +243,16 @@ message EcbConversionEvidence {
   // Immutable audit data for an accountant-controlled exception.
   string selection_reason = 23;
   optional string selected_by_user_id = 24;
+
+  // The currency converted_amount is stated in. Always EUR for the
+  // original-currency-to-EUR leg; the profile's native currency for the
+  // EUR-to-native leg that follows it when that native currency is not EUR.
+  string converted_currency = 25;
+
+  // Set only on the EUR-to-native-currency leg of a two-hop conversion. Names
+  // the original-currency-to-EUR leg's evidence_id, which produced this row's
+  // original_amount/original_currency (always EUR).
+  optional int64 derived_from_evidence_id = 26;
 }
 
 message ListEcbConversionEvidenceResponse {
diff --git a/common/src/proto/descriptor.bin b/common/src/proto/descriptor.bin
index b8a7c42a..4e234c52 100644
Binary files a/common/src/proto/descriptor.bin and b/common/src/proto/descriptor.bin differ
diff --git a/common/src/proto/komp_ac.ecb.rs b/common/src/proto/komp_ac.ecb.rs
index c801661a..3cf183a2 100644
--- a/common/src/proto/komp_ac.ecb.rs
+++ b/common/src/proto/komp_ac.ecb.rs
@@ -132,7 +132,7 @@ pub struct PreviewEcbConversionResponse {
     #[prost(string, tag = "2")]
     pub original_currency: ::prost::alloc::string::String,
     #[prost(string, tag = "3")]
-    pub eur_amount: ::prost::alloc::string::String,
+    pub converted_amount: ::prost::alloc::string::String,
     #[prost(string, tag = "4")]
     pub conversion_basis_date: ::prost::alloc::string::String,
     #[prost(string, tag = "5")]
@@ -174,6 +174,17 @@ pub struct PreviewEcbConversionResponse {
     pub applied_source: i32,
     #[prost(string, tag = "21")]
     pub selection_reason: ::prost::alloc::string::String,
+    /// The currency converted_amount is stated in: the profile's accounting
+    /// currency (EUR unless the profile keeps its books in something else).
+    #[prost(string, tag = "22")]
+    pub converted_currency: ::prost::alloc::string::String,
+    /// True when reaching converted_currency needed two hops (original currency
+    /// to EUR, then EUR to converted_currency) because neither is EUR. The
+    /// fields above then describe only the second, final hop; the full
+    /// provenance of both hops is available from ListEcbConversionEvidence
+    /// after posting.
+    #[prost(bool, tag = "23")]
+    pub via_two_hop_conversion: bool,
 }
 /// Identify one logical money cell whose conversion history should be inspected.
 #[derive(Clone, PartialEq, Eq, Hash, ::prost::Message)]
@@ -211,7 +222,7 @@ pub struct EcbConversionEvidence {
     #[prost(string, tag = "4")]
     pub original_currency: ::prost::alloc::string::String,
     #[prost(string, tag = "5")]
-    pub eur_amount: ::prost::alloc::string::String,
+    pub converted_amount: ::prost::alloc::string::String,
     #[prost(string, tag = "6")]
     pub conversion_context: ::prost::alloc::string::String,
     #[prost(string, tag = "7")]
@@ -254,6 +265,16 @@ pub struct EcbConversionEvidence {
     pub selection_reason: ::prost::alloc::string::String,
     #[prost(string, optional, tag = "24")]
     pub selected_by_user_id: ::core::option::Option<::prost::alloc::string::String>,
+    /// The currency converted_amount is stated in. Always EUR for the
+    /// original-currency-to-EUR leg; the profile's native currency for the
+    /// EUR-to-native leg that follows it when that native currency is not EUR.
+    #[prost(string, tag = "25")]
+    pub converted_currency: ::prost::alloc::string::String,
+    /// Set only on the EUR-to-native-currency leg of a two-hop conversion. Names
+    /// the original-currency-to-EUR leg's evidence_id, which produced this row's
+    /// original_amount/original_currency (always EUR).
+    #[prost(int64, optional, tag = "26")]
+    pub derived_from_evidence_id: ::core::option::Option<i64>,
 }
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct ListEcbConversionEvidenceResponse {
diff --git a/server b/server
index 9a14bb11..0fc100a4 160000
--- a/server
+++ b/server
@@ -1 +1 @@
-Subproject commit 9a14bb116a0d281fe7965198cebf6e6689a53f0b
+Subproject commit 0fc100a4342846eea066bd239d546f206568cd23
diff --git a/web/locales/cs/main.ftl b/web/locales/cs/main.ftl
index 194e2676..ce656ed5 100644
--- a/web/locales/cs/main.ftl
+++ b/web/locales/cs/main.ftl
@@ -755,7 +755,7 @@ builder-choose-profile = Vyberte profil
 builder-new-profile = Nový profil…
 builder-new-profile-name = Název nového profilu
 builder-accounting-currency = Účetní měna
-builder-accounting-currency-hint = Účetnictví se zatím vede v EUR — ostatní měny jsou v seznamu, ale server je zatím odmítá.
+builder-accounting-currency-hint = Účetnictví může být vedeno v jakékoli měně, pro kterou ECB zveřejňuje referenční kurz. Jiná měna než EUR se v případě potřeby přepočítá přes EUR, protože kurzy ECB jsou vždy vyjádřeny vůči euru.
 builder-table-name = Název tabulky
 builder-add-column-heading = Přidat sloupec
 builder-add-column-button = Přidat sloupec
diff --git a/web/locales/en/main.ftl b/web/locales/en/main.ftl
index 8c9f8318..8ecf2d68 100644
--- a/web/locales/en/main.ftl
+++ b/web/locales/en/main.ftl
@@ -743,7 +743,7 @@ builder-choose-profile = Choose a profile
 builder-new-profile = New profile…
 builder-new-profile-name = New profile name
 builder-accounting-currency = Accounting currency
-builder-accounting-currency-hint = Books are kept in EUR for now — other currencies are listed but the server still refuses them.
+builder-accounting-currency-hint = Books can be kept in any currency ECB publishes a reference rate for. A currency other than EUR is converted through EUR when needed, since ECB rates are always quoted against the euro.
 builder-table-name = Table name
 builder-add-column-heading = Add a column
 builder-add-column-button = Add column
diff --git a/web/locales/sk/main.ftl b/web/locales/sk/main.ftl
index fc240161..5949c941 100644
--- a/web/locales/sk/main.ftl
+++ b/web/locales/sk/main.ftl
@@ -753,7 +753,7 @@ builder-choose-profile = Vyberte profil
 builder-new-profile = Nový profil…
 builder-new-profile-name = Názov nového profilu
 builder-accounting-currency = Účtovná mena
-builder-accounting-currency-hint = Účtovníctvo sa zatiaľ vedie v EUR — ostatné meny sú v zozname, ale server ich ešte odmieta.
+builder-accounting-currency-hint = Účtovníctvo môže byť vedené v akejkoľvek mene, pre ktorú ECB zverejňuje referenčný kurz. Iná mena ako EUR sa v prípade potreby prepočíta cez EUR, keďže kurzy ECB sú vždy vyjadrené voči euru.
 builder-table-name = Názov tabuľky
 builder-add-column-heading = Pridať stĺpec
 builder-add-column-button = Pridať stĺpec