diff --git a/did/did.go b/did/did.go
index ed75953..2d02afa 100644
--- a/did/did.go
+++ b/did/did.go
@@ -5,9 +5,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/nuts-foundation/go-did"
+	"math/big"
 	"net/url"
 	"strings"
+
+	ssi "github.com/nuts-foundation/go-did"
 )
 
 var _ fmt.Stringer = DID{}
@@ -15,16 +17,25 @@ var _ encoding.TextMarshaler = DID{}
 
 // DIDContextV1 contains the JSON-LD context for a DID Document
 const DIDContextV1 = "https://www.w3.org/ns/did/v1"
+const SECP256Recovery = "https://w3id.org/security/suites/secp256k1recovery-2020/v2"
 
 // DIDContextV1URI returns DIDContextV1 as a URI
 func DIDContextV1URI() ssi.URI {
 	return ssi.MustParseURI(DIDContextV1)
 }
 
+// SECP256RecoveryURI returns SECP256Recovery as a URI
+func SECP256RecoveryURI() ssi.URI {
+	return ssi.MustParseURI(SECP256Recovery)
+}
+
 // DID represent a Decentralized Identifier as specified by the DID Core specification (https://www.w3.org/TR/did-core/#identifier).
 type DID struct {
 	// Method is the DID method, e.g. "example".
 	Method string
+	// If the Method is blockchain and the chain id is neccessary use this.
+	// e.g. Method = "ethr", MethodID = "1"
+	MethodID *big.Int
 	// ID is the method-specific ID, in escaped form.
 	ID string
 	// DecodedID is the method-specific ID, in unescaped form.
diff --git a/did/document.go b/did/document.go
index f78dd3d..0bd320f 100644
--- a/did/document.go
+++ b/did/document.go
@@ -8,12 +8,14 @@ import (
 	"errors"
 	"fmt"
 
+	"strings"
+
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/lestrrat-go/jwx/v2/jwa"
 	"github.com/lestrrat-go/jwx/v2/jwk"
 	"github.com/multiformats/go-multibase"
-	"strings"
 
-	"github.com/nuts-foundation/go-did"
+	ssi "github.com/nuts-foundation/go-did"
 	"github.com/nuts-foundation/go-did/internal/marshal"
 	"github.com/shengdoushi/base58"
 )
@@ -299,6 +301,8 @@ type VerificationMethod struct {
 	// PublicKeyBase58 is deprecated and should not be used anymore. Use PublicKeyMultibase or PublicKeyJwk instead.
 	PublicKeyBase58 string                 `json:"publicKeyBase58,omitempty"`
 	PublicKeyJwk    map[string]interface{} `json:"publicKeyJwk,omitempty"`
+	// BlockchainAccountId can be used instead of public key when using smart contact based on DIDRegistry ERC1056.
+	BlockchainAccountId string `json:"blockchainAccountId,omitempty"`
 }
 
 // NewVerificationMethod is a convenience method to easily create verificationMethods based on a set of given params.
@@ -340,7 +344,7 @@ func NewVerificationMethod(id DIDURL, keyType ssi.KeyType, controller DID, key c
 		}
 		vm.PublicKeyJwk = jwkAsMap
 	}
-	if keyType == ssi.ED25519VerificationKey2018 || keyType == ssi.ED25519VerificationKey2020  {
+	if keyType == ssi.ED25519VerificationKey2018 || keyType == ssi.ED25519VerificationKey2020 {
 		ed25519Key, ok := key.(ed25519.PublicKey)
 		if !ok {
 			return nil, errors.New("wrong key type")
@@ -352,6 +356,14 @@ func NewVerificationMethod(id DIDURL, keyType ssi.KeyType, controller DID, key c
 		vm.PublicKeyMultibase = encodedKey
 	}
 
+	if keyType == ssi.ECDSASECP256K1RecoveryMethod2020 {
+		address := id.DID.ID
+		if common.HexToAddress(address) == (common.Address{}) || len(address) != 42 {
+			return nil, errors.New("invalid address")
+		}
+		vm.BlockchainAccountId = fmt.Sprintf("eip155:%d:%s", id.DID.MethodID, address)
+	}
+
 	return vm, nil
 }
 
diff --git a/go.mod b/go.mod
index f5125b9..cd74437 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,7 @@ require (
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/ethereum/go-ethereum v1.12.2 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
 	github.com/lestrrat-go/httpcc v1.0.1 // indirect
diff --git a/go.sum b/go.sum
index e936095..7b3fd02 100644
--- a/go.sum
+++ b/go.sum
@@ -3,6 +3,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/ethereum/go-ethereum v1.12.2 h1:eGHJ4ij7oyVqUQn48LBz3B7pvQ8sV0wGJiIE6gDq/6Y=
+github.com/ethereum/go-ethereum v1.12.2/go.mod h1:1cRAEV+rp/xX0zraSCBnu9Py3HQ+geRMj3HdR+k0wfI=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/lestrrat-go/blackmagic v1.0.2 h1:Cg2gVSc9h7sz9NOByczrbUvLopQmXrfFx//N+AkAr5k=
diff --git a/spec-registries.go b/spec-registries.go
index 546b102..298fedb 100644
--- a/spec-registries.go
+++ b/spec-registries.go
@@ -22,9 +22,12 @@ const ECDSASECP256K1VerificationKey2019 = KeyType("EcdsaSecp256k1VerificationKey
 // https://w3c-ccg.github.io/lds-rsa2018/
 const RSAVerificationKey2018 = KeyType("RsaVerificationKey2018")
 
+// https://identity.foundation/EcdsaSecp256k1RecoverySignature2020/
+// https://github.com/ChainAgnostic/CAIPs/blob/main/CAIPs/caip-10.md
+const ECDSASECP256K1RecoveryMethod2020 = KeyType("EcdsaSecp256k1RecoveryMethod2020")
+
 type ProofType string
 
 // JsonWebSignature2020 is a Proof type.
 // https://w3c-ccg.github.io/lds-jws2020
 const JsonWebSignature2020 = ProofType("JsonWebSignature2020")
-