diff --git a/core/txpool/blobpool/blobpool.go b/core/txpool/blobpool/blobpool.go
index 6a5b7a759d..6758b7b905 100644
--- a/core/txpool/blobpool/blobpool.go
+++ b/core/txpool/blobpool/blobpool.go
@@ -883,6 +883,26 @@ func (p *BlobPool) Reset(oldHead, newHead *types.Header) {
 	basefeeGauge.Update(int64(basefee.Uint64()))
 	blobfeeGauge.Update(int64(blobfee.Uint64()))
 	p.updateStorageMetrics()
+
+	if p.chain.Config().IsOsaka(newHead.Number, newHead.Time) {
+		txs := make(map[common.Address]map[common.Hash]uint64)
+		for address, list := range p.index {
+			txs[address] = make(map[common.Hash]uint64)
+			for _, meta := range list {
+				if meta.version == types.BlobSidecarVersion1 {
+					continue
+				}
+				txs[address][meta.hash] = meta.id
+			}
+		}
+		go func() {
+			for address, list := range txs {
+				for hash, id := range list {
+					p.convert(address, hash, id)
+				}
+			}
+		}()
+	}
 }
 
 // reorg assembles all the transactors and missing transactions between an old
@@ -1061,6 +1081,93 @@ func (p *BlobPool) reinject(addr common.Address, txhash common.Hash) error {
 	return nil
 }
 
+// convert fetches transaction data from the store, performs an on-the-fly conversion,
+// and persists the result. This function is intended for use only during the
+// Osaka fork transition period.
+func (p *BlobPool) convert(sender common.Address, hash common.Hash, id uint64) (success bool) {
+	// Remove the legacy blob tx data if conversion succeeds
+	defer func() {
+		if success {
+			if err := p.store.Delete(id); err != nil {
+				log.Error("Failed to delete old blob transaction", "hash", hash, "id", id, "err", err)
+			}
+		}
+	}()
+
+	// Retrieves the legacy blob transaction from the underlying store without
+	// holding the pool mutex. The transaction may have been evicted simultaneously,
+	// if so, it is safely ignored.
+	start := time.Now()
+	data, err := p.store.Get(id)
+	if err != nil || len(data) == 0 {
+		log.Debug("Blob transaction is missing", "hash", hash, "id", id, "err", err)
+		return false
+	}
+	oldStorageSize := p.store.Size(id)
+
+	// Convert the sidecar without the lock, as this procedure can take a while
+	var tx types.Transaction
+	if err = rlp.DecodeBytes(data, &tx); err != nil {
+		log.Error("Blob transaction is corrupted", "hash", hash, "id", id, "err", err)
+		return false
+	}
+	if err := tx.BlobTxSidecar().ToV1(); err != nil {
+		log.Error("Failed to convert blob transaction", "hash", hash, "err", err)
+		return false
+	}
+
+	// Serialize the transaction back into the primary datastore.
+	blob, err := rlp.EncodeToBytes(&tx)
+	if err != nil {
+		log.Error("Failed to encode transaction for storage", "hash", tx.Hash(), "err", err)
+		return false
+	}
+	newSize := uint64(len(blob))
+
+	newId, err := p.store.Put(blob)
+	if err != nil {
+		log.Error("Failed to store transaction", "hash", hash, "err", err)
+		return false
+	}
+	newStorageSize := p.store.Size(newId)
+
+	// Remove the newly added blob transaction if the transaction is not held
+	// by the pool anymore.
+	defer func() {
+		if !success {
+			if err := p.store.Delete(newId); err != nil {
+				log.Error("Failed to delete outdated transaction", "hash", hash, "err", err)
+			}
+			log.Info("Blob transaction is outdated", "hash", hash)
+		}
+	}()
+
+	// Update the metadata in the blob pool by holding the mutex
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	// The transaction may have been evicted simultaneously, if so, it is
+	// safely ignored.
+	if !p.lookup.exists(hash) {
+		return false
+	}
+	for _, meta := range p.index[sender] {
+		if meta.hash == hash {
+			meta.id = newId
+			meta.version = types.BlobSidecarVersion1
+			meta.storageSize = newStorageSize
+			meta.size = newSize
+
+			p.lookup.updateTxIndex(hash, newId, newSize)
+			p.stored += uint64(newStorageSize)
+			p.stored -= uint64(oldStorageSize)
+			break
+		}
+	}
+	log.Debug("Converted the legacy transaction", "hash", hash, "elapsed", common.PrettyDuration(time.Since(start)))
+	return true
+}
+
 // SetGasTip implements txpool.SubPool, allowing the blob pool's gas requirements
 // to be kept in sync with the main transaction pool's gas requirements.
 func (p *BlobPool) SetGasTip(tip *big.Int) {
diff --git a/core/txpool/blobpool/lookup.go b/core/txpool/blobpool/lookup.go
index 7607cd487a..313c5a675c 100644
--- a/core/txpool/blobpool/lookup.go
+++ b/core/txpool/blobpool/lookup.go
@@ -21,7 +21,7 @@ import (
 )
 
 type txMetadata struct {
-	id   uint64 // the billy id of transction
+	id   uint64 // the billy id of transaction
 	size uint64 // the RLP encoded size of transaction (blobs are included)
 }
 
@@ -110,3 +110,14 @@ func (l *lookup) untrack(tx *blobTxMeta) {
 		}
 	}
 }
+
+// updateTxIndex updates the transaction index
+func (l *lookup) updateTxIndex(hash common.Hash, id uint64, size uint64) bool {
+	meta, exists := l.txIndex[hash]
+	if !exists {
+		return false
+	}
+	meta.id = id
+	meta.size = size
+	return true
+}