diff --git a/Cargo.lock b/Cargo.lock
index 33299e1..806cd85 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,29 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
+[[package]]
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+ "once_cell",
+ "version_check",
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+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
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 version = "0.7.15"
@@ -130,7 +154,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.65",
 ]
 
 [[package]]
@@ -142,6 +166,29 @@ dependencies = [
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 ]
 
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.65",
+]
+
 [[package]]
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@@ -173,11 +220,100 @@ version = "0.1.1"
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 checksum = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 
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+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
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+ "futures-util",
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+dependencies = [
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+ "futures-sink",
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+
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+checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+dependencies = [
+ "futures-core",
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+ "futures-util",
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+dependencies = [
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+
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+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-sink",
+ "futures-task",
+ "memchr",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
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+
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+version = "0.2.9"
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@@ -192,9 +328,21 @@ checksum = "62aca2aba2d62b4a7f5b33f3712cb1b0692779a56fb510499d5c0aa594daeaf3"
 
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+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
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+dependencies = [
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+]
 
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@@ -222,12 +370,22 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
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-version = "1.6.2"
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 dependencies = [
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- "hashbrown",
+ "hashbrown 0.12.3",
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+dependencies = [
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+ "smallvec",
 ]
 
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+dependencies = [
+ "contextual",
+ "futures",
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+ "json-ld-context-processing",
+ "json-ld-core",
+ "json-ld-expansion",
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+ "json-ld-core",
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+ "json-ld-syntax",
+ "json-syntax",
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+ "iref",
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+ "json-syntax",
+ "langtag",
+ "locspan",
+ "locspan-derive",
+ "log",
+ "mime",
+ "mown",
+ "once_cell",
+ "permutohedron",
+ "pretty_dtoa",
+ "rdf-types",
+ "ryu-js",
+ "smallvec",
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+checksum = "685e26b5a3e4266c351baf3c00793a097e40f4293270ac508b3f4cbc41e72e54"
+dependencies = [
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+ "hashbrown 0.13.2",
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+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e88991223b049a3d29ca1f60c05639581336a0f3ee4bf8a659dddecc11c4961a"
+dependencies = [
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+ "proc-macro2",
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+
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+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if",
+]
 
 [[package]]
 name = "memchr"
@@ -254,6 +680,18 @@ version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
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+
 [[package]]
 name = "musign-cli"
 version = "0.1.0"
@@ -262,6 +700,7 @@ dependencies = [
  "bitcoin",
  "clap",
  "hex",
+ "json-ld",
  "predicates",
  "secp256k1",
  "serde",
@@ -285,12 +724,45 @@ dependencies = [
  "autocfg 1.0.1",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
+
 [[package]]
 name = "os_str_bytes"
 version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afb2e1c3ee07430c2cf76151675e583e0f19985fa6efae47d6848a3e2c824f85"
 
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+name = "pct-str"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77d207ec8d182c2fef45f028b9b9507770df19e89b3e14827ccd95d4a23f6003"
+dependencies = [
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+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
+
+[[package]]
+name = "pin-utils"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.10"
@@ -326,6 +798,15 @@ dependencies = [
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 ]
 
+[[package]]
+name = "pretty_dtoa"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a239bcdfda2c685fda1add3b4695c06225f50075e3cfb5b954e91545587edff2"
+dependencies = [
+ "ryu_floating_decimal",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -335,7 +816,7 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.65",
  "version_check",
 ]
 
@@ -352,18 +833,18 @@ dependencies = [
 
 [[package]]
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+version = "1.0.56"
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-checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
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 [[package]]
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-version = "1.0.9"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
 dependencies = [
  "proc-macro2",
 ]
@@ -514,6 +995,20 @@ dependencies = [
  "rand_core 0.3.1",
 ]
 
+[[package]]
+name = "rdf-types"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91b5c288e27bded17a1dde9211be09b6b2db08b0429eb5c3b2b97822b504701d"
+dependencies = [
+ "contextual",
+ "iref",
+ "langtag",
+ "locspan",
+ "locspan-derive",
+ "thiserror",
+]
+
 [[package]]
 name = "rdrand"
 version = "0.4.0"
@@ -564,6 +1059,18 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
+[[package]]
+name = "ryu-js"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6518fc26bced4d53678a22d6e423e9d8716377def84545fe328236e3af070e7f"
+
+[[package]]
+name = "ryu_floating_decimal"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "700de91d5fd6091442d00fdd9ee790af6d4f0f480562b0f5a1e8f59e90aafe73"
+
 [[package]]
 name = "secp256k1"
 version = "0.20.1"
@@ -611,7 +1118,7 @@ checksum = "b093b7a2bb58203b5da3056c05b4ec1fed827dcfdb37347a8841695263b3d06d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.65",
 ]
 
 [[package]]
@@ -626,6 +1133,45 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "slab"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6528351c9bc8ab22353f9d776db39a20288e8d6c37ef8cfe3317cf875eecfc2d"
+dependencies = [
+ "autocfg 1.0.1",
+]
+
+[[package]]
+name = "smallstr"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b1aefdf380735ff8ded0b15f31aab05daf1f70216c01c02a12926badd1df9d"
+dependencies = [
+ "smallvec",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
+
+[[package]]
+name = "static-iref"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9786d4b8e9e5423fe85c57a826d7e0f0774746149a2ccd21e2104ff74b71ce7"
+dependencies = [
+ "iref",
+]
+
+[[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"
@@ -643,6 +1189,17 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.2.0"
@@ -675,12 +1232,38 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.15",
+]
+
 [[package]]
 name = "treeline"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.7.1"
@@ -699,6 +1282,12 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
 
+[[package]]
+name = "utf8-decode"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca61eb27fa339aa08826a29f03e87b99b4d8f0fc2255306fd266bb1b6a9de498"
+
 [[package]]
 name = "vec_map"
 version = "0.8.2"
@@ -707,15 +1296,15 @@ checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
 [[package]]
 name = "version_check"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "winapi"
diff --git a/Cargo.toml b/Cargo.toml
index d61bc99..4703554 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,6 +18,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = {version="1.0", features = ["preserve_order"]}
 serde_cbor = "0.11.1"
 bitcoin = {version="0.26.0", features = ["secp-recovery", "base64"]}
+json-ld = "0.14.1"
 
 [dev-dependencies]
 assert_cmd = "0.10"