diff --git a/Cargo.lock b/Cargo.lock
index c9dcca5..9dfd94e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,12 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "arrayvec"
-version = "0.7.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -28,9 +22,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitvec"
-version = "0.20.4"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7774144344a4faa177370406a7ff5f1da24303817368584c6206c8303eb07848"
+checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
 dependencies = [
  "funty",
  "radium",
@@ -40,61 +34,19 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.10.2"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bf7fe51849ea569fd452f37822f606a5cabb684dc918707a0193fd4664ff324"
+checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
 dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "bls"
-version = "0.2.0"
-dependencies = [
- "blst",
- "eth2_hashing",
- "eth2_serde_utils",
- "eth2_ssz",
- "ethereum-types",
- "hex",
- "rand 0.7.3",
- "serde",
- "serde_derive",
- "tree_hash",
- "zeroize",
-]
-
-[[package]]
-name = "blst"
-version = "0.3.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a30d0edd9dd1c60ddb42b80341c7852f6f985279a5c1a83659dcb65899dec99"
-dependencies = [
- "cc",
- "glob",
- "threadpool",
- "which",
- "zeroize",
-]
-
 [[package]]
 name = "bumpalo"
 version = "3.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37ccbd214614c6783386c1af30caf03192f17891059cecc394b4fb119e363de3"
 
-[[package]]
-name = "byte-slice-cast"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87c5fdd0166095e1d463fc6cc01aa8ce547ad77a4e84d42eb6762b084e28067e"
-
-[[package]]
-name = "byteorder"
-version = "1.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
-
 [[package]]
 name = "bytes"
 version = "1.2.1"
@@ -139,83 +91,14 @@ dependencies = [
 ]
 
 [[package]]
-name = "crunchy"
-version = "0.2.2"
+name = "digest"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
-
-[[package]]
-name = "crypto-common"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
  "generic-array",
- "typenum",
 ]
 
-[[package]]
-name = "darling"
-version = "0.13.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a01d95850c592940db9b8194bc39f4bc0e89dee5c4265e4b1807c34a9aba453c"
-dependencies = [
- "darling_core",
- "darling_macro",
-]
-
-[[package]]
-name = "darling_core"
-version = "0.13.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "859d65a907b6852c9361e3185c862aae7fafd2887876799fa55f5f99dc40d610"
-dependencies = [
- "fnv",
- "ident_case",
- "proc-macro2",
- "quote",
- "strsim",
- "syn",
-]
-
-[[package]]
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-dependencies = [
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- "quote",
- "syn",
-]
-
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-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2fb860ca6fafa5552fb6d0e816a69c8e49f0908bf524e30a90d97c85892d506"
-dependencies = [
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-checksum = "3f107b87b6afc2a64fd13cac55fe06d6c8859f12d4b14cbcdd2c67d0976781be"
-
 [[package]]
 name = "encoding_rs"
 version = "0.8.31"
@@ -225,91 +108,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
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-version = "0.3.0"
-source = "git+https://github.com/sigp/lighthouse#df51a73272489fe154bd10995c96199062b6c3f7"
-dependencies = [
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- "ring",
- "sha2",
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-
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- "serde",
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- "serde_json",
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-
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-dependencies = [
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- "smallvec",
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-
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-dependencies = [
- "darling",
- "proc-macro2",
- "quote",
- "syn",
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-
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-dependencies = [
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- "eth2_serde_utils",
- "eth2_ssz",
- "serde",
- "serde_derive",
- "smallvec",
- "tree_hash",
- "typenum",
-]
-
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-name = "ethbloom"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "crunchy",
- "fixed-hash",
- "impl-rlp",
- "impl-serde",
- "tiny-keccak",
-]
-
-[[package]]
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-dependencies = [
- "ethbloom",
- "fixed-hash",
- "impl-rlp",
- "impl-serde",
- "primitive-types",
- "uint",
-]
-
 [[package]]
 name = "eyre"
 version = "0.6.8"
@@ -329,18 +127,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "fixed-hash"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cfcf0ed7fe52a17a03854ec54a9f76d6d84508d1c0e66bc1793301c73fc8493c"
-dependencies = [
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- "rand 0.8.5",
- "rustc-hex",
- "static_assertions",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -374,9 +160,9 @@ dependencies = [
 
 [[package]]
 name = "funty"
-version = "1.1.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
+checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
 
 [[package]]
 name = "futures-channel"
@@ -427,34 +213,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "getrandom"
-version = "0.1.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi 0.9.0+wasi-snapshot-preview1",
-]
-
-[[package]]
-name = "getrandom"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
-]
-
-[[package]]
-name = "glob"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
-
 [[package]]
 name = "h2"
 version = "0.3.13"
@@ -566,12 +324,6 @@ dependencies = [
  "tokio-native-tls",
 ]
 
-[[package]]
-name = "ident_case"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
-
 [[package]]
 name = "idna"
 version = "0.2.3"
@@ -583,44 +335,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "impl-codec"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "161ebdfec3c8e3b52bf61c4f3550a1eea4f9579d10dc1b936f3171ebdcd6c443"
-dependencies = [
- "parity-scale-codec",
-]
-
-[[package]]
-name = "impl-rlp"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f28220f89297a075ddc7245cd538076ee98b01f2a9c23a53a4f1105d5a322808"
-dependencies = [
- "rlp",
-]
-
-[[package]]
-name = "impl-serde"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4551f042f3438e64dbd6226b20527fc84a6e1fe65688b58746a2f53623f25f5c"
-dependencies = [
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-
-[[package]]
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-version = "0.2.2"
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-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "indenter"
 version = "0.3.3"
@@ -652,15 +366,6 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "879d54834c8c76457ef4293a689b2a8c59b076067ad77b15efafbb05f92a592b"
 
-[[package]]
-name = "itertools"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itoa"
 version = "1.0.3"
@@ -692,20 +397,12 @@ checksum = "64de3cc433455c14174d42e554d4027ee631c4d046d43e3ecc6efc4636cdc7a7"
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 version = "0.1.0"
 dependencies = [
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- "eth2_hashing",
- "eth2_ssz",
- "eth2_ssz_derive",
- "eth2_ssz_types",
- "ethereum-types",
  "eyre",
  "hex",
- "merkle_proof",
  "reqwest",
  "serde",
+ "ssz-rs",
  "tokio",
- "tree_hash",
- "tree_hash_derive",
 ]
 
 [[package]]
@@ -739,17 +436,6 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
-[[package]]
-name = "merkle_proof"
-version = "0.2.0"
-source = "git+https://github.com/sigp/lighthouse#df51a73272489fe154bd10995c96199062b6c3f7"
-dependencies = [
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- "ethereum-types",
- "lazy_static",
- "safe_arith",
-]
-
 [[package]]
 name = "mime"
 version = "0.3.16"
@@ -764,7 +450,7 @@ checksum = "57ee1c23c7c63b0c9250c339ffdc69255f110b298b901b9f6c82547b7b87caaf"
 dependencies = [
  "libc",
  "log",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
  "windows-sys",
 ]
 
@@ -786,6 +472,36 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f93ab6289c7b344a8a9f60f88d80aa20032336fe78da341afc91c8a2341fc75f"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.1"
@@ -802,6 +518,12 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
 
+[[package]]
+name = "opaque-debug"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
+
 [[package]]
 name = "openssl"
 version = "0.10.41"
@@ -847,32 +569,6 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "parity-scale-codec"
-version = "2.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "373b1a4c1338d9cd3d1fa53b3a11bdab5ab6bd80a20f7f7becd76953ae2be909"
-dependencies = [
- "arrayvec",
- "bitvec",
- "byte-slice-cast",
- "impl-trait-for-tuples",
- "parity-scale-codec-derive",
- "serde",
-]
-
-[[package]]
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-version = "2.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1557010476e0595c9b568d16dcfb81b93cdeb157612726f5170d31aa707bed27"
-dependencies = [
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- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.1"
@@ -920,36 +616,6 @@ version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
-
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-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "impl-rlp",
- "impl-serde",
- "uint",
-]
-
-[[package]]
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-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "once_cell",
- "thiserror",
- "toml",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.43"
@@ -970,80 +636,9 @@ dependencies = [
 
 [[package]]
 name = "radium"
-version = "0.6.2"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "643f8f41a8ebc4c5dc4515c82bb8abd397b527fc20fd681b7c011c2aee5d44fb"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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- "libc",
- "rand_chacha 0.2.2",
- "rand_core 0.5.1",
- "rand_hc",
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-dependencies = [
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-dependencies = [
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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-name = "rand_hc"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
-dependencies = [
- "rand_core 0.5.1",
-]
+checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
 
 [[package]]
 name = "redox_syscall"
@@ -1100,48 +695,12 @@ dependencies = [
  "winreg",
 ]
 
-[[package]]
-name = "ring"
-version = "0.16.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3053cf52e236a3ed746dfc745aa9cacf1b791d846bdaf412f60a8d7d6e17c8fc"
-dependencies = [
- "cc",
- "libc",
- "once_cell",
- "spin",
- "untrusted",
- "web-sys",
- "winapi",
-]
-
-[[package]]
-name = "rlp"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "999508abb0ae792aabed2460c45b89106d97fe4adac593bdaef433c2605847b5"
-dependencies = [
- "bytes",
- "rustc-hex",
-]
-
-[[package]]
-name = "rustc-hex"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e75f6a532d0fd9f7f13144f392b6ad56a32696bfcd9c78f797f16bbb6f072d6"
-
 [[package]]
 name = "ryu"
 version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
 
-[[package]]
-name = "safe_arith"
-version = "0.1.0"
-source = "git+https://github.com/sigp/lighthouse#df51a73272489fe154bd10995c96199062b6c3f7"
-
 [[package]]
 name = "schannel"
 version = "0.1.20"
@@ -1226,13 +785,15 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.10.2"
+version = "0.9.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55deaec60f81eefe3cce0dc50bda92d6d8e88f2a27df7c5033b42afeb1ed2676"
+checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
 dependencies = [
+ "block-buffer",
  "cfg-if",
  "cpufeatures",
  "digest",
+ "opaque-debug",
 ]
 
 [[package]]
@@ -1270,22 +831,29 @@ dependencies = [
 ]
 
 [[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
+name = "ssz-rs"
+version = "0.8.0"
+source = "git+https://github.com/ralexstokes/ssz-rs#bd7cfb5a836e28747e6ce5e570234d14df0b24f7"
+dependencies = [
+ "bitvec",
+ "hex",
+ "lazy_static",
+ "num-bigint",
+ "serde",
+ "sha2",
+ "ssz-rs-derive",
+ "thiserror",
+]
 
 [[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "strsim"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+name = "ssz-rs-derive"
+version = "0.8.0"
+source = "git+https://github.com/ralexstokes/ssz-rs#bd7cfb5a836e28747e6ce5e570234d14df0b24f7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
 
 [[package]]
 name = "syn"
@@ -1298,18 +866,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "synstructure"
-version = "0.12.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "unicode-xid",
-]
-
 [[package]]
 name = "tap"
 version = "1.0.1"
@@ -1350,24 +906,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "threadpool"
-version = "1.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d050e60b33d41c19108b32cea32164033a9013fe3b46cbd4457559bfbf77afaa"
-dependencies = [
- "num_cpus",
-]
-
-[[package]]
-name = "tiny-keccak"
-version = "2.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
-dependencies = [
- "crunchy",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -1439,15 +977,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "toml"
-version = "0.5.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "tower-service"
 version = "0.3.2"
@@ -1474,24 +1003,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "tree_hash"
-version = "0.4.1"
-dependencies = [
- "eth2_hashing",
- "ethereum-types",
- "smallvec",
-]
-
-[[package]]
-name = "tree_hash_derive"
-version = "0.4.0"
-dependencies = [
- "darling",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "try-lock"
 version = "0.2.3"
@@ -1504,18 +1015,6 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 
-[[package]]
-name = "uint"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
-dependencies = [
- "byteorder",
- "crunchy",
- "hex",
- "static_assertions",
-]
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.8"
@@ -1537,18 +1036,6 @@ dependencies = [
  "tinyvec",
 ]
 
-[[package]]
-name = "unicode-xid"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957e51f3646910546462e67d5f7599b9e4fb8acdd304b087a6494730f9eebf04"
-
-[[package]]
-name = "untrusted"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
-
 [[package]]
 name = "url"
 version = "2.2.2"
@@ -1583,12 +1070,6 @@ dependencies = [
  "try-lock",
 ]
 
-[[package]]
-name = "wasi"
-version = "0.9.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -1671,17 +1152,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "which"
-version = "4.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c4fb54e6113b6a8772ee41c3404fb0301ac79604489467e0a9ce1f3e97c24ae"
-dependencies = [
- "either",
- "lazy_static",
- "libc",
-]
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1758,27 +1228,9 @@ dependencies = [
 
 [[package]]
 name = "wyz"
-version = "0.2.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
-
-[[package]]
-name = "zeroize"
-version = "1.5.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c394b5bd0c6f669e7275d9c20aa90ae064cb22e75a1cad54e1b34088034b149f"
+checksum = "30b31594f29d27036c383b53b59ed3476874d518f0efb151b27a4c275141390e"
 dependencies = [
- "zeroize_derive",
-]
-
-[[package]]
-name = "zeroize_derive"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "synstructure",
+ "tap",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index d788abd..c6c1a5e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,20 +10,6 @@ reqwest = { version = "0.11", features = ["json"] }
 tokio = { version = "1", features = ["full"] }
 eyre = "0.6.8"
 serde = { version = "1.0.143", features = ["derive"] }
-eth2_ssz = { path = "../lighthouse/consensus/ssz" }
-eth2_ssz_derive = "0.3.0"
-eth2_ssz_types = { path = "../lighthouse/consensus/ssz_types" }
 hex = "0.4.3"
-eth2_hashing = { git = "https://github.com/sigp/lighthouse" }
-merkle_proof = { git = "https://github.com/sigp/lighthouse" }
-ethereum-types = "0.12.1"
-tree_hash = { path = "../lighthouse/consensus/tree_hash" }
-tree_hash_derive = { path = "../lighthouse/consensus/tree_hash_derive" }
-bls = { path = "../lighthouse/crypto/bls" }
-# types = { path = "../lighthouse/consensus/types" }
+ssz-rs = { git = "https://github.com/ralexstokes/ssz-rs" }
 
-[patch.crates-io]
-eth2_hashing = { git = "https://github.com/sigp/lighthouse" }
-eth2_serde_utils = { git = "https://github.com/sigp/lighthouse" }
-tree_hash = { path = "../lighthouse/consensus/tree_hash" }
-# eth2_ssz = { git = "https://github.com/sigp/lighthouse" }
diff --git a/src/main.rs b/src/main.rs
index afd240a..7964532 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,14 +1,6 @@
 use eyre::Result;
-use serde::{Deserialize, Deserializer};
-use ssz::Encode;
-use ssz_types::typenum::*;
-use ssz_derive::Encode;
-use ssz_types::FixedVector;
-use eth2_hashing::hash;
-use merkle_proof::verify_merkle_proof;
-use ethereum_types::H256;
-use bls::PublicKeyBytes;
-use tree_hash_derive::TreeHash;
+use serde::Deserializer;
+use ssz_rs::prelude::*;
 
 #[tokio::main]
 async fn main() -> Result<()> {
@@ -38,33 +30,28 @@ struct Store {
 impl LightClient {
     async fn new(nimbus_rpc: &str, checkpoint_block_root: &str) -> Result<LightClient> {
 
-        let bootstrap = Self::get_bootstrap(nimbus_rpc, checkpoint_block_root).await?;
+        let mut bootstrap = Self::get_bootstrap(nimbus_rpc, checkpoint_block_root).await?;
 
-        let committee_hash = tree_hash::TreeHash::tree_hash_root(&bootstrap.current_sync_committee);
-        println!("{:?}", committee_hash);
-        
-        let committee_hash = H256::from_slice(&committee_hash[..]);
-        let branch = &bootstrap.current_sync_committee_branch.iter().map(|elem| {
-            H256::from_slice(&hex::decode(elem.strip_prefix("0x").unwrap()).unwrap())
-        }).collect::<Vec<H256>>()[..];
-         
-         let index = 22;
-         let depth = 5;
+        let committee_hash = bootstrap.current_sync_committee.hash_tree_root()?;
+        let root = Node::from_bytes(hex::decode(bootstrap.header.state_root.strip_prefix("0x").unwrap()).unwrap().try_into().unwrap());
+        let committee_branch = bootstrap.current_sync_committee_branch.iter().map(|elem| {
+            Node::from_bytes(hex::decode(elem.strip_prefix("0x").unwrap()).unwrap().try_into().unwrap())
+        }).collect::<Vec<_>>();
 
-         let root = H256::from_slice(&hex::decode(checkpoint_block_root.strip_prefix("0x").unwrap()).unwrap());
+        println!("{}", committee_hash);
+    
+        let is_valid = is_valid_merkle_branch(&committee_hash, committee_branch.iter(), 5, 22, &root);
+        println!("{}", is_valid);
 
-         let is_valid = verify_merkle_proof(committee_hash, branch, depth, index, root);
-         println!("{}", is_valid);
-         println!("{:?}", committee_hash);
-         println!("{:?}", branch);
+        // let store = Store {
+        //     header: bootstrap.header,
+        //     current_sync_committee: bootstrap.current_sync_committee,
+        //     next_sync_committee: None,
+        // };
 
-        let store = Store {
-            header: bootstrap.header,
-            current_sync_committee: bootstrap.current_sync_committee,
-            next_sync_committee: None,
-        };
+        // Ok(LightClient { nimbus_rpc: nimbus_rpc.to_string(), store })
 
-        Ok(LightClient { nimbus_rpc: nimbus_rpc.to_string(), store })
+        eyre::bail!("")
     }
 
     async fn sync(&self) -> Result<()> {
@@ -104,57 +91,60 @@ impl LightClient {
     }
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct BootstrapResponse {
     data: BootstrapData,
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct BootstrapData {
     v: Bootstrap,
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct Bootstrap {
     header: Header,
     current_sync_committee: SyncCommittee,
     current_sync_committee_branch: Vec<String>,
 }
 
-#[derive(Deserialize, Debug, Clone, Encode, TreeHash)]
+#[derive(Debug, Clone, Default, SimpleSerialize, serde::Deserialize)]
 struct SyncCommittee {
     #[serde(deserialize_with = "pubkeys_deserialize")]
-    pubkeys: FixedVector<PublicKeyBytes, U512>,
+    pubkeys: Vector<BLSPubKey, 512>,
     #[serde(deserialize_with = "pubkey_deserialize")]
-    aggregate_pubkey: PublicKeyBytes,
+    aggregate_pubkey: BLSPubKey,
 }
 
-fn pubkey_deserialize<'de, D>(deserializer: D) -> Result<PublicKeyBytes, D::Error> where D: Deserializer<'de> {
-    let key: String = Deserialize::deserialize(deserializer)?;
+type BLSPubKey = Vector<u8, 48>;
+
+fn pubkey_deserialize<'de, D>(deserializer: D) -> Result<BLSPubKey, D::Error> where D: serde::Deserializer<'de> {
+    let key: String = serde::Deserialize::deserialize(deserializer)?;
     let key_bytes = hex::decode(key.strip_prefix("0x").unwrap()).unwrap();
-    Ok(PublicKeyBytes::deserialize(&key_bytes).unwrap())
+    Ok(Vector::from_iter(key_bytes))
 }
 
-fn pubkeys_deserialize<'de, D>(deserializer: D) -> Result<FixedVector<PublicKeyBytes, U512>, D::Error> where D: Deserializer<'de> {
-    let keys: Vec<String> = Deserialize::deserialize(deserializer)?;
-    let vec = keys.iter().map(|key| {
+fn pubkeys_deserialize<'de, D>(deserializer: D) -> Result<Vector<BLSPubKey, 512>, D::Error> where D: serde::Deserializer<'de> {
+    let keys: Vec<String> = serde::Deserialize::deserialize(deserializer)?;
+    Ok(keys.iter().map(|key| {
         let key_bytes = hex::decode(key.strip_prefix("0x").unwrap()).unwrap();
-        PublicKeyBytes::deserialize(&key_bytes).unwrap()
-    }).collect::<Vec<PublicKeyBytes>>();
-    Ok(FixedVector::new(vec).unwrap())
+        Vector::from_iter(key_bytes)
+    }).collect::<Vector<BLSPubKey, 512>>())
 }
 
-#[derive(Deserialize, Debug, Clone)]
+#[derive(serde::Deserialize, Debug, Clone)]
 struct Header {
     slot: String,
+    state_root: String,
+    body_root: String,
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct UpdateResponse {
     data: Vec<Update>,
 }
 
-#[derive(Deserialize, Debug, Clone)]
+#[derive(serde::Deserialize, Debug, Clone)]
 struct Update {
     attested_header: Header,
     next_sync_committee: SyncCommittee,
@@ -164,18 +154,18 @@ struct Update {
     sync_aggregate: SyncAggregate,
 }
 
-#[derive(Deserialize, Debug, Clone)]
+#[derive(serde::Deserialize, Debug, Clone)]
 struct SyncAggregate {
     sync_committee_bits: String,
     sync_committee_signature: String,
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct FinalityUpdateResponse {
     data: FinalityUpdate,
 }
 
-#[derive(Deserialize, Debug)]
+#[derive(serde::Deserialize, Debug)]
 struct FinalityUpdate {
     attested_header: Header,
     finalized_header: Header,