blockfrost · slowbackspace · Sep 2, 2026 · Sep 1, 2026 · Sep 1, 2026 · Sep 2, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [6.8.0] - 2026-09-02
+
+### Added
+
+- New `counted` field in `/governance/proposals/:tx_hash/:cert_index/votes`, indicating whether the vote counts toward the proposal's tally: only the voter's latest vote counts, and a DRep vote stops counting if the DRep deregisters while the proposal is still live (blockfrost/openapi#466)
+
+### Changed
+
+- Constitutional committee voters in `/governance/proposals/:tx_hash/:cert_index/votes` are now CIP-129 `cc_hot1...` ids instead of raw hex (blockfrost/openapi#465)
+- Updated `@blockfrost/openapi` to 0.1.93
+
 ## [6.7.2] - 2026-08-05
 
 ### Added

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "blockfrost-backend-ryo",
-  "version": "6.7.2",
+  "version": "6.8.0",
   "description": "",
   "keywords": [],
   "license": "Apache-2.0",
@@ -23,7 +23,7 @@
   "dependencies": {
     "@blockfrost/blockfrost-js": "6.1.1",
     "@blockfrost/blockfrost-utils": "3.0.0",
-    "@blockfrost/openapi": "0.1.91",
+    "@blockfrost/openapi": "0.1.93",
     "@fastify/cors": "^11.1.0",
     "@fastify/http-proxy": "^11.5.0",
     "@fastify/postgres": "^6.0.2",

diff --git a/src/sql/governance/proposals_proposal_votes.sql b/src/sql/governance/proposals_proposal_votes.sql
@@ -1,9 +1,41 @@
+WITH proposal_votes AS (
+  SELECT vp.id,
+    vp.tx_id,
+    vp.index,
+    vp.voter_role,
+    vp.drep_voter,
+    vp.pool_voter,
+    vp.committee_voter,
+    vp.vote,
+    -- Epoch in which the proposal left the active set; its vote tally is frozen
+    -- from that point on
+    LEAST(
+      gap.ratified_epoch,
+      gap.enacted_epoch,
+      gap.dropped_epoch,
+      gap.expired_epoch
+    ) AS closed_epoch,
+    -- The ledger keeps only the latest vote per voter and proposal (upsert semantics)
+    ROW_NUMBER() OVER (
+      PARTITION BY vp.voter_role,
+      vp.drep_voter,
+      vp.pool_voter,
+      vp.committee_voter
+      ORDER BY vp.tx_id DESC,
+        vp.id DESC
+    ) AS recency_rank
+  FROM gov_action_proposal gap
+    JOIN tx gap_tx ON (gap_tx.id = gap.tx_id)
+    JOIN voting_procedure vp ON (vp.gov_action_proposal_id = gap.id)
+  WHERE encode(gap_tx.hash, 'hex') = $4
+    AND gap.index = $5
+)
 SELECT encode(vp_tx.hash, 'hex') AS "tx_hash",
-  vp.index AS "cert_index",
+  p.index AS "cert_index",
   (
     CASE
-      WHEN vp.voter_role::TEXT = 'ConstitutionalCommittee' THEN 'constitutional_committee'
-      ELSE LOWER(vp.voter_role::TEXT)
+      WHEN p.voter_role::TEXT = 'ConstitutionalCommittee' THEN 'constitutional_committee'
+      ELSE LOWER(p.voter_role::TEXT)
     END
   ) AS "voter_role",
   -- ConstitutionalCommittee, DRep, SPO -> constitutional_committee, drep, spo
@@ -12,22 +44,41 @@ SELECT encode(vp_tx.hash, 'hex') AS "tx_hash",
   ) AS "voter",
   dh.has_script AS "voter_has_script",
   ch.has_script AS "cc_voter_has_script",
-  LOWER(vote::TEXT) AS "vote" -- Yes, No, Abstain -> yes,no,abstain
-FROM gov_action_proposal gap
-  JOIN tx gap_tx ON (gap_tx.id = gap.tx_id)
-  JOIN voting_procedure vp ON (vp.gov_action_proposal_id = gap.id)
-  JOIN tx vp_tx ON (vp_tx.id = vp.tx_id)
-  LEFT JOIN drep_hash dh ON (vp.drep_voter = dh.id)
-  LEFT JOIN pool_hash ph ON (vp.pool_voter = ph.id)
-  LEFT JOIN committee_hash ch ON (vp.committee_voter = ch.id)
-WHERE encode(gap_tx.hash, 'hex') = $4
-  AND gap.index = $5
+  LOWER(p.vote::TEXT) AS "vote",
+  -- Yes, No, Abstain -> yes,no,abstain
+  (
+    p.recency_rank = 1
+    AND (
+      p.drep_voter IS NULL
+      -- deregistration drops the DRep's votes from the ledger and re-registering
+      -- does not restore them, but only while the proposal is still live:
+      -- once it closes the tally is frozen and later deregistrations have no effect
+      OR NOT EXISTS (
+        SELECT 1
+        FROM drep_registration dr
+          JOIN tx dr_tx ON (dr_tx.id = dr.tx_id)
+          JOIN block dr_b ON (dr_b.id = dr_tx.block_id)
+        WHERE dr.drep_hash_id = p.drep_voter
+          AND dr.deposit < 0
+          AND dr.tx_id > p.tx_id
+          AND (
+            p.closed_epoch IS NULL
+            OR dr_b.epoch_no < p.closed_epoch
+          )
+      )
+    )
+  ) AS "counted"
+FROM proposal_votes p
+  JOIN tx vp_tx ON (vp_tx.id = p.tx_id)
+  LEFT JOIN drep_hash dh ON (p.drep_voter = dh.id)
+  LEFT JOIN pool_hash ph ON (p.pool_voter = ph.id)
+  LEFT JOIN committee_hash ch ON (p.committee_voter = ch.id)
 ORDER BY CASE
-    WHEN LOWER($1) = 'desc' THEN vp.id
+    WHEN LOWER($1) = 'desc' THEN p.id
   END DESC,
   CASE
     WHEN LOWER($1) <> 'desc'
-    OR $1 IS NULL THEN vp.id
+    OR $1 IS NULL THEN p.id
   END ASC
 LIMIT CASE
     WHEN $2 >= 1

diff --git a/src/sql/governance/unpaged/proposals_proposal_votes.sql b/src/sql/governance/unpaged/proposals_proposal_votes.sql
@@ -1,9 +1,41 @@
+WITH proposal_votes AS (
+  SELECT vp.id,
+    vp.tx_id,
+    vp.index,
+    vp.voter_role,
+    vp.drep_voter,
+    vp.pool_voter,
+    vp.committee_voter,
+    vp.vote,
+    -- Epoch in which the proposal left the active set; its vote tally is frozen
+    -- from that point on
+    LEAST(
+      gap.ratified_epoch,
+      gap.enacted_epoch,
+      gap.dropped_epoch,
+      gap.expired_epoch
+    ) AS closed_epoch,
+    -- The ledger keeps only the latest vote per voter and proposal (upsert semantics)
+    ROW_NUMBER() OVER (
+      PARTITION BY vp.voter_role,
+      vp.drep_voter,
+      vp.pool_voter,
+      vp.committee_voter
+      ORDER BY vp.tx_id DESC,
+        vp.id DESC
+    ) AS recency_rank
+  FROM gov_action_proposal gap
+    JOIN tx gap_tx ON (gap_tx.id = gap.tx_id)
+    JOIN voting_procedure vp ON (vp.gov_action_proposal_id = gap.id)
+  WHERE encode(gap_tx.hash, 'hex') = $2
+    AND gap.index = $3
+)
 SELECT encode(vp_tx.hash, 'hex') AS "tx_hash",
-  vp.index AS "cert_index",
+  p.index AS "cert_index",
   (
     CASE
-      WHEN vp.voter_role::TEXT = 'ConstitutionalCommittee' THEN 'constitutional_committee'
-      ELSE LOWER(vp.voter_role::TEXT)
+      WHEN p.voter_role::TEXT = 'ConstitutionalCommittee' THEN 'constitutional_committee'
+      ELSE LOWER(p.voter_role::TEXT)
     END
   ) AS "voter_role",
   -- ConstitutionalCommittee, DRep, SPO -> constitutional_committee, drep, spo
@@ -12,20 +44,39 @@ SELECT encode(vp_tx.hash, 'hex') AS "tx_hash",
   ) AS "voter",
   dh.has_script AS "voter_has_script",
   ch.has_script AS "cc_voter_has_script",
-  LOWER(vote::TEXT) AS "vote" -- Yes, No, Abstain -> yes,no,abstain
-FROM gov_action_proposal gap
-  JOIN tx gap_tx ON (gap_tx.id = gap.tx_id)
-  JOIN voting_procedure vp ON (vp.gov_action_proposal_id = gap.id)
-  JOIN tx vp_tx ON (vp_tx.id = vp.tx_id)
-  LEFT JOIN drep_hash dh ON (vp.drep_voter = dh.id)
-  LEFT JOIN pool_hash ph ON (vp.pool_voter = ph.id)
-  LEFT JOIN committee_hash ch ON (vp.committee_voter = ch.id)
-WHERE encode(gap_tx.hash, 'hex') = $2
-  AND gap.index = $3
+  LOWER(p.vote::TEXT) AS "vote",
+  -- Yes, No, Abstain -> yes,no,abstain
+  (
+    p.recency_rank = 1
+    AND (
+      p.drep_voter IS NULL
+      -- deregistration drops the DRep's votes from the ledger and re-registering
+      -- does not restore them, but only while the proposal is still live:
+      -- once it closes the tally is frozen and later deregistrations have no effect
+      OR NOT EXISTS (
+        SELECT 1
+        FROM drep_registration dr
+          JOIN tx dr_tx ON (dr_tx.id = dr.tx_id)
+          JOIN block dr_b ON (dr_b.id = dr_tx.block_id)
+        WHERE dr.drep_hash_id = p.drep_voter
+          AND dr.deposit < 0
+          AND dr.tx_id > p.tx_id
+          AND (
+            p.closed_epoch IS NULL
+            OR dr_b.epoch_no < p.closed_epoch
+          )
+      )
+    )
+  ) AS "counted"
+FROM proposal_votes p
+  JOIN tx vp_tx ON (vp_tx.id = p.tx_id)
+  LEFT JOIN drep_hash dh ON (p.drep_voter = dh.id)
+  LEFT JOIN pool_hash ph ON (p.pool_voter = ph.id)
+  LEFT JOIN committee_hash ch ON (p.committee_voter = ch.id)
 ORDER BY CASE
-    WHEN LOWER($1) = 'desc' THEN vp.id
+    WHEN LOWER($1) = 'desc' THEN p.id
   END DESC,
   CASE
     WHEN LOWER($1) <> 'desc'
-    OR $1 IS NULL THEN vp.id
+    OR $1 IS NULL THEN p.id
   END ASC
diff --git a/src/types/queries/governance.ts b/src/types/queries/governance.ts
@@ -182,6 +182,7 @@ export interface ProposalsProposalVotes {
   voter_has_script: boolean;
   cc_voter_has_script: boolean | null;
   vote: 'yes' | 'no' | 'abstain';
+  counted: boolean;
 }
 
 export interface ProposalsProposalMetadata {

diff --git a/yarn.lock b/yarn.lock
@@ -101,15 +101,15 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@blockfrost/openapi@npm:0.1.91":
-  version: 0.1.91
-  resolution: "@blockfrost/openapi@npm:0.1.91"
+"@blockfrost/openapi@npm:0.1.93":
+  version: 0.1.93
+  resolution: "@blockfrost/openapi@npm:0.1.93"
   dependencies:
     ajv: ^8.17.1
     cbor: ^9.0.2
     rimraf: 6.0.1
     yaml: ^2.6.1
-  checksum: d33b439dcd11519d4a0578343d7de5909eeb35b86929f1bd8ac9b5e73534f42508cc363a8b68e9fec4ac804849fc8c393e42c64c3015873716cefcebbf4090d5
+  checksum: 0273c7f948962fe1739a3dae2c26e06fac81443af799afcc72350441f5b165daf2b4b43ede76e092ee180dc558be676fc95dba44e427fd1f0f59158f92504bb5
   languageName: node
   linkType: hard
 
@@ -1956,7 +1956,7 @@ __metadata:
   dependencies:
     "@blockfrost/blockfrost-js": 6.1.1
     "@blockfrost/blockfrost-utils": 3.0.0
-    "@blockfrost/openapi": 0.1.91
+    "@blockfrost/openapi": 0.1.93
     "@eslint/compat": ^2.0.0
     "@eslint/eslintrc": ^3.3.3
     "@eslint/js": ^9.39.1