api/gateway/mntx/storage/mongo/store/payouts.go

@@ -2,9 +2,7 @@ package store
 
 import (
 	"context"
-	"errors"
 	"strings"
-	"time"
 
 	storage "github.com/tech/sendico/gateway/mntx/storage"
 	"github.com/tech/sendico/gateway/mntx/storage/model"
@@ -12,9 +10,7 @@ import (
 	ri "github.com/tech/sendico/pkg/db/repository/index"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"
-	"go.mongodb.org/mongo-driver/v2/bson"
 	"go.mongodb.org/mongo-driver/v2/mongo"
-	"go.mongodb.org/mongo-driver/v2/mongo/options"
 	"go.uber.org/zap"
 )
 
@@ -26,7 +22,7 @@ const (
 
 type Payouts struct {
 	logger     mlogger.Logger
-	coll   *mongo.Collection
+	repository repository.Repository
 }
 
 func NewPayouts(logger mlogger.Logger, db *mongo.Database) (*Payouts, error) {
@@ -51,37 +47,19 @@ func NewPayouts(logger mlogger.Logger, db *mongo.Database) (*Payouts, error) {
 
 	p := &Payouts{
 		logger:     logger,
-		coll:   db.Collection(payoutsCollection),
+		repository: repo,
 	}
 	p.logger.Debug("Payouts store initialised")
 	return p, nil
 }
 
 func (p *Payouts) findOneByField(ctx context.Context, field, value string) (*model.CardPayout, error) {
-	value = strings.TrimSpace(value)
+	var res model.CardPayout
-	if value == "" {
+	return &res, p.repository.FindOneByFilter(ctx, repository.Filter(field, value), &res)
-		return nil, merrors.InvalidArgument("lookup key is required", field)
-	}
-
-	var result model.CardPayout
-	err := p.coll.FindOne(ctx, bson.M{field: value}).Decode(&result)
-	if err == mongo.ErrNoDocuments {
-		return nil, nil
-	}
-	if err != nil {
-		if !errors.Is(err, context.Canceled) && !errors.Is(err, context.DeadlineExceeded) {
-			p.logger.Warn("Payout record lookup failed",
-				zap.String("field", field),
-				zap.String("value", value),
-				zap.Error(err))
-		}
-		return nil, err
-	}
-	return &result, nil
 }
 
 func (p *Payouts) FindByIdempotencyKey(ctx context.Context, key string) (*model.CardPayout, error) {
-	return p.findOneByField(ctx, payoutIdemField, key) // operationRef
+	return p.findOneByField(ctx, payoutIdemField, key)
 }
 
 func (p *Payouts) FindByPaymentID(ctx context.Context, paymentID string) (*model.CardPayout, error) {
@@ -103,35 +81,7 @@ func (p *Payouts) Upsert(ctx context.Context, record *model.CardPayout) error {
 		return merrors.InvalidArgument("operation ref is required", "operation_ref")
 	}
 
-	now := time.Now()
+	return p.repository.Insert(ctx, record, repository.Filter(payoutIdemField, record.IdempotencyKey))
-	if record.CreatedAt.IsZero() {
-		record.CreatedAt = now
-	}
-	record.UpdatedAt = now
-
-	// critical: never let caller override _id
-	record.ID = bson.NilObjectID
-
-	update := bson.M{
-		"$set": record,
-	}
-
-	_, err := p.coll.UpdateOne(
-		ctx,
-		bson.M{payoutIdemField: record.OperationRef},
-		update,
-		options.UpdateOne().SetUpsert(true),
-	)
-	if err != nil {
-		if !errors.Is(err, context.Canceled) && !errors.Is(err, context.DeadlineExceeded) {
-			p.logger.Warn("Failed to upsert payout record",
-				zap.String("operation_ref", record.OperationRef),
-				zap.String("payout_id", record.PayoutID),
-				zap.Error(err))
-		}
-		return err
-	}
-	return nil
 }
 
 var _ storage.PayoutsStore = (*Payouts)(nil)

api/gateway/tron/internal/server/internal/serverimp.go

@@ -14,8 +14,8 @@ import (
 	gatewayservice "github.com/tech/sendico/gateway/tron/internal/service/gateway"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/drivers"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	gatewayshared "github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/tronclient"
+	gatewayshared "github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage"
 	gatewaymongo "github.com/tech/sendico/gateway/tron/storage/mongo"
 	"github.com/tech/sendico/pkg/api/routers"

api/gateway/tron/internal/service/gateway/commands/transfer/convert_fees.go

@@ -4,7 +4,7 @@ import (
 	"strings"
 
 	"github.com/shopspring/decimal"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	chainv1 "github.com/tech/sendico/pkg/proto/gateway/chain/v1"

api/gateway/tron/internal/service/gateway/commands/transfer/deps.go

@@ -7,8 +7,8 @@ import (
 	"github.com/tech/sendico/gateway/tron/internal/keymanager"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/drivers"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/tronclient"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage"
 	clockpkg "github.com/tech/sendico/pkg/clock"
 	"github.com/tech/sendico/pkg/mlogger"

api/gateway/tron/internal/service/gateway/commands/transfer/fee.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mservice"

api/gateway/tron/internal/service/gateway/commands/transfer/gas_topup.go

@@ -8,7 +8,7 @@ import (
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/commands/wallet"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver/evm"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver/tron"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/commands/transfer/list.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"strings"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/mservice"

api/gateway/tron/internal/service/gateway/commands/transfer/proto.go

@@ -1,7 +1,7 @@
 package transfer
 
 import (
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	chainv1 "github.com/tech/sendico/pkg/proto/gateway/chain/v1"
 	"google.golang.org/protobuf/types/known/timestamppb"

api/gateway/tron/internal/service/gateway/commands/transfer/submit.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	"github.com/shopspring/decimal"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/commands/wallet/balance.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/commands/wallet/create.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"strings"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/commands/wallet/list.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"strings"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
 	"github.com/tech/sendico/pkg/mservice"

api/gateway/tron/internal/service/gateway/commands/wallet/proto.go

@@ -3,7 +3,7 @@ package wallet
 import (
 	"strings"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	describablev1 "github.com/tech/sendico/pkg/proto/common/describable/v1"
 	chainv1 "github.com/tech/sendico/pkg/proto/gateway/chain/v1"

api/gateway/tron/internal/service/gateway/connector.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 
 	"github.com/tech/sendico/gateway/tron/internal/appversion"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	chainasset "github.com/tech/sendico/pkg/chain"
 	"github.com/tech/sendico/pkg/connector/params"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/driver/driver.go

@@ -7,8 +7,8 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/tech/sendico/gateway/tron/internal/keymanager"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/tronclient"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/mlogger"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"

api/gateway/tron/internal/service/gateway/driver/evm/evm.go

@@ -15,7 +15,7 @@ import (
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/shopspring/decimal"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"

api/gateway/tron/internal/service/gateway/driver/evm/gas_topup.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 
 	"github.com/shopspring/decimal"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"

api/gateway/tron/internal/service/gateway/driver/evm/gas_topup_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/shopspring/decimal"
 	"github.com/stretchr/testify/require"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"
 )

api/gateway/tron/internal/service/gateway/driver/tron/address.go

@@ -8,6 +8,7 @@ import (
 	"math/big"
 	"strings"
 
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/merrors"
 )
 
@@ -41,7 +42,7 @@ func rpcAddress(address string) (string, error) {
 	if strings.HasPrefix(trimmed, tronHexPrefix) || isHexString(trimmed) {
 		return normalizeHexRPC(trimmed)
 	}
-	return base58ToHex(trimmed)
+	return shared.TronBase58ToHex(trimmed)
 }
 
 func hexToBase58(address string) (string, error) {
@@ -53,17 +54,6 @@ func hexToBase58(address string) (string, error) {
 	return base58Encode(payload), nil
 }
 
-func base58ToHex(address string) (string, error) {
-	decoded, err := base58Decode(address)
-	if err != nil {
-		return "", err
-	}
-	if err := validateChecksum(decoded); err != nil {
-		return "", err
-	}
-	return tronHexPrefix + hex.EncodeToString(decoded[1:21]), nil
-}
-
 func parseHexAddress(address string) ([]byte, error) {
 	trimmed := strings.TrimPrefix(strings.TrimSpace(address), tronHexPrefix)
 	if trimmed == "" {

api/gateway/tron/internal/service/gateway/driver/tron/driver.go

@@ -7,7 +7,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver/evm"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"

api/gateway/tron/internal/service/gateway/driver/tron/driver_test.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"
 	"go.uber.org/zap"

api/gateway/tron/internal/service/gateway/driver/tron/gas_topup.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 
 	"github.com/shopspring/decimal"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"

api/gateway/tron/internal/service/gateway/driver/tron/gas_topup_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/shopspring/decimal"
 	"github.com/stretchr/testify/require"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	moneyv1 "github.com/tech/sendico/pkg/proto/common/money/v1"
 )

api/gateway/tron/internal/service/gateway/drivers/registry.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver/tron"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"
 	"go.uber.org/zap"

api/gateway/tron/internal/service/gateway/executor.go

@@ -14,7 +14,7 @@ import (
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/shopspring/decimal"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"go.uber.org/zap"
 
 	"github.com/tech/sendico/gateway/tron/internal/keymanager"

api/gateway/tron/internal/service/gateway/options.go

@@ -6,8 +6,8 @@ import (
 	"github.com/tech/sendico/gateway/tron/internal/keymanager"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/drivers"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/tronclient"
+	"github.com/tech/sendico/gateway/tron/shared"
 	clockpkg "github.com/tech/sendico/pkg/clock"
 )
 

api/gateway/tron/internal/service/gateway/rpcclient/clients.go

@@ -11,7 +11,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/ethclient"
 	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"
 	"go.uber.org/zap"

api/gateway/tron/internal/service/gateway/rpcclient/registry.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/ethclient"
 	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/merrors"
 )
 

api/gateway/tron/internal/service/gateway/service.go

@@ -10,8 +10,8 @@ import (
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/commands/wallet"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/drivers"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/rpcclient"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/tronclient"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage"
 	"github.com/tech/sendico/pkg/api/routers"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"

api/gateway/tron/internal/service/gateway/service_test.go

@@ -21,7 +21,7 @@ import (
 
 	"github.com/tech/sendico/gateway/tron/internal/keymanager"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/drivers"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"

api/gateway/tron/internal/service/gateway/shared/tron_addr.go

@@ -1,37 +0,0 @@
-package shared
-
-import (
-	"encoding/hex"
-	"fmt"
-
-	"github.com/shengdoushi/base58"
-	"github.com/tech/sendico/pkg/merrors"
-)
-
-func TronBase58ToHex(addr string) (string, error) {
-	const (
-		tronAddrLen   = 25
-		tronPrefix    = byte(0x41)
-		payloadLen    = 21
-		checksumBytes = 4
-	)
-
-	raw, err := base58.Decode(addr, base58.BitcoinAlphabet)
-	if err != nil {
-		return "", merrors.InvalidArgument(fmt.Sprintf("tron address: base58 decode failed: %s", err.Error()))
-	}
-
-	if len(raw) != tronAddrLen {
-		return "", merrors.DataConflict("tron address: invalid length")
-	}
-
-	// 21 байт: prefix + 20 байт EVM адреса
-	payload := raw[:payloadLen]
-
-	if payload[0] != tronPrefix {
-		return "", merrors.DataConflict("tron address: invalid prefix")
-	}
-
-	evm := payload[1:payloadLen]
-	return "0x" + hex.EncodeToString(evm), nil
-}

api/gateway/tron/internal/service/gateway/transfer_execution.go

@@ -8,7 +8,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/tech/sendico/gateway/tron/internal/service/gateway/driver"
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/gateway/tron/storage/model"
 	"github.com/tech/sendico/pkg/merrors"
 	"go.uber.org/zap"

api/gateway/tron/internal/service/gateway/tronclient/registry.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/tech/sendico/gateway/tron/internal/service/gateway/shared"
+	"github.com/tech/sendico/gateway/tron/shared"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"
 	"go.uber.org/zap"

api/gateway/tron/shared/tron_addr.go

@@ -0,0 +1,52 @@
+package shared
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"strings"
+
+	"github.com/shengdoushi/base58"
+	"github.com/tech/sendico/pkg/merrors"
+)
+
+func TronBase58ToHex(addr string) (string, error) {
+	const (
+		tronAddrLen = 25
+		tronPrefix  = byte(0x41)
+	)
+
+	raw, err := base58.Decode(strings.TrimSpace(addr), base58.BitcoinAlphabet)
+	if err != nil {
+		return "", merrors.InvalidArgument(
+			fmt.Sprintf("tron address: base58 decode failed: %s", err.Error()),
+		)
+	}
+
+	if len(raw) != tronAddrLen {
+		return "", merrors.DataConflict(
+			fmt.Sprintf("tron address: invalid length %d", len(raw)),
+		)
+	}
+
+	// 21 байт: prefix + 20 байт EVM
+	payload := raw[:21]
+	checksum := raw[21:]
+
+	if payload[0] != tronPrefix {
+		return "", merrors.DataConflict("tron address: invalid prefix")
+	}
+
+	// validate checksum (double sha256)
+	h1 := sha256.Sum256(payload)
+	h2 := sha256.Sum256(h1[:])
+	expectedChecksum := h2[:4]
+
+	if !bytes.Equal(expectedChecksum, checksum) {
+		return "", merrors.DataConflict("tron address: invalid checksum")
+	}
+
+	evm := payload[1:]
+	return "0x" + hex.EncodeToString(evm), nil
+}