diff --git a/.github/workflows/publish-npm.yml b/.github/workflows/publish-npm.yml
index e34a6bc..999eccc 100644
--- a/.github/workflows/publish-npm.yml
+++ b/.github/workflows/publish-npm.yml
@@ -33,7 +33,13 @@ jobs:
           wasm-pack build bindings/wasm/ \
             --target web \
             --out-dir ../../pkg \
-            --out-name libveritas
+            --out-name libveritas \
+            -- \
+            --config 'profile.release.opt-level=3' \
+            --config 'profile.release.lto="fat"' \
+            --config 'profile.release.codegen-units=1' \
+            --config 'profile.release.panic="abort"' \
+            --config 'profile.release.strip=true'
 
       - name: Report WASM size
         run: ls -lh pkg/libveritas_bg.wasm
diff --git a/Cargo.toml b/Cargo.toml
index e37d3ad..a7fa253 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,10 +26,3 @@ spacedb          = { version = "0.1", default-features = false, features = ["ext
 # Always optimize; building and running the guest takes much longer without optimization.
 [profile.dev]
 opt-level = 3
-
-[profile.release]
-lto = "fat"
-opt-level = "z"
-codegen-units = 1
-panic = "abort"
-strip = true
diff --git a/examples/fixture/anchors-real.json b/examples/fixture/anchors-real.json
new file mode 100644
index 0000000..0ccb40e
--- /dev/null
+++ b/examples/fixture/anchors-real.json
@@ -0,0 +1,850 @@
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+    "spaces_root": "4e0512a45087f6dd1fabc4243715ece86cbeef10f5b3bbddf9d78a4be86146bf",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "73cc96fb7d18458b399c58ced431fedaa645f7bb80ef1c6f5c73677133b69929",
+      "height": 684
+    }
+  },
+  {
+    "spaces_root": "4e0512a45087f6dd1fabc4243715ece86cbeef10f5b3bbddf9d78a4be86146bf",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "427ba226064ac148ae49a917a28ee43f1f6913a044e937a452e867d5619fcef7",
+      "height": 648
+    }
+  },
+  {
+    "spaces_root": "4e0512a45087f6dd1fabc4243715ece86cbeef10f5b3bbddf9d78a4be86146bf",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "72296b1b3696d0a1c8a41ea2a4c301ba1074a92d06b1140f0ffdc72e1042f1bb",
+      "height": 612
+    }
+  },
+  {
+    "spaces_root": "ec405d542d126187f7c475ddc91e43c294877a99c2bfa7dd66ef1b5c48554bf9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "7486764377331210162846e314faced050dd11747036b9b833c416517472558b",
+      "height": 576
+    }
+  },
+  {
+    "spaces_root": "ec405d542d126187f7c475ddc91e43c294877a99c2bfa7dd66ef1b5c48554bf9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "2276225ca0cfd27347514b49dc830555f2b7804d0c12195859aa9eaa33f12cd0",
+      "height": 540
+    }
+  },
+  {
+    "spaces_root": "ec405d542d126187f7c475ddc91e43c294877a99c2bfa7dd66ef1b5c48554bf9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "476f7eb3151261629fe3f7db0f24d760f70e87140454b47b5c371d768c997457",
+      "height": 504
+    }
+  },
+  {
+    "spaces_root": "ec405d542d126187f7c475ddc91e43c294877a99c2bfa7dd66ef1b5c48554bf9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "1d0ae54bb3ec238cd3baa78b9c5c8c362f6f32ea405c5441c14c6ec35ad92f91",
+      "height": 468
+    }
+  },
+  {
+    "spaces_root": "540beb6148cacf7c74d1e53555266480ab9bc728d4c9dba5e405f5f171ca82a9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "22a9f5e1feac083a6637ff1b3b808a2e3c5cede1ff843e809f853c0d02804404",
+      "height": 432
+    }
+  },
+  {
+    "spaces_root": "540beb6148cacf7c74d1e53555266480ab9bc728d4c9dba5e405f5f171ca82a9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "1f539f199d529dc77973c92a57682de617e8adec1d3119d067e7a9631e4c79f0",
+      "height": 396
+    }
+  },
+  {
+    "spaces_root": "540beb6148cacf7c74d1e53555266480ab9bc728d4c9dba5e405f5f171ca82a9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "013d3716da09160dba56075db9bb05b95f3abfcab31bc7b8e1dab2707b0d16a8",
+      "height": 360
+    }
+  },
+  {
+    "spaces_root": "540beb6148cacf7c74d1e53555266480ab9bc728d4c9dba5e405f5f171ca82a9",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "7ffc641ea24e8f89944cade9611fea800a5a480598b708a603dd6a386104d0fc",
+      "height": 324
+    }
+  },
+  {
+    "spaces_root": "21b17ee3595b1b38533be3d151bcb562bb2732e8d45603289aad6f68763dfdac",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "4fea71866dc4ef3ea3f20c251b0a2c012849f9fd71ade961fa5719fdd7deb5e3",
+      "height": 288
+    }
+  },
+  {
+    "spaces_root": "21b17ee3595b1b38533be3d151bcb562bb2732e8d45603289aad6f68763dfdac",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "0481465dbd6334e3f62a76a752b878069cd181ecd56fdc9fe082069c439dab77",
+      "height": 252
+    }
+  },
+  {
+    "spaces_root": "21b17ee3595b1b38533be3d151bcb562bb2732e8d45603289aad6f68763dfdac",
+    "nums_root": "cb0f2aafa84b6b5c4a0d2c4429e1d32472ca8c42edb461fd27fbe66dec511cd5",
+    "block": {
+      "hash": "5eba7dad585d114476b6506f4afbe7ad29200226857cac1aa610df1e5af437dd",
+      "height": 216
+    }
+  },
+  {
+    "spaces_root": "d035cc47e4a53b962ae77cf238fcfde334ee5546bf4968f1e22ee235d209f212",
+    "nums_root": "891e57acef62be2017a71d094b6275b97778620f18afc3edc944b8638ade33cb",
+    "block": {
+      "hash": "0b8089d54167dd5705ec9ba92cebaa118437907b269eedd158b91c4a4dbe2423",
+      "height": 180
+    }
+  },
+  {
+    "spaces_root": "2400b44fe1df3642a824b003014df5f5d7924e66d5023cbe11dd2a9a66c2096e",
+    "nums_root": "5eb97dfa2295313cd7d8fe47e65a7eaf363fef2c50d3dba34e09fa522f27056a",
+    "block": {
+      "hash": "07b5052df65a4cd88f484c8cdb1540f1dae8bf983ded953d9513f36cfef37f0d",
+      "height": 144
+    }
+  },
+  {
+    "spaces_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "nums_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "block": {
+      "hash": "09a5a2b9072983f20e166ee7d70d4151b1d26a2013a6d6c8e09ca4e67618504b",
+      "height": 108
+    }
+  },
+  {
+    "spaces_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "nums_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "block": {
+      "hash": "4450aee641352e28c688f48dc88863c98591469d0611dba3341e3093c41344be",
+      "height": 72
+    }
+  },
+  {
+    "spaces_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "nums_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+    "block": {
+      "hash": "2f48d066ba0efa7f9399d3349da9f56cda3dfef40e0844ba77793bcd84ff3c60",
+      "height": 36
+    }
+  }
+]
\ No newline at end of file
diff --git a/examples/fixture/message-real.bin b/examples/fixture/message-real.bin
new file mode 100644
index 0000000..f016c08
Binary files /dev/null and b/examples/fixture/message-real.bin differ
diff --git a/veritas/src/lib.rs b/veritas/src/lib.rs
index 45a040e..9cd97b3 100644
--- a/veritas/src/lib.rs
+++ b/veritas/src/lib.rs
@@ -39,6 +39,7 @@ use spaces_protocol::sname::SName;
 use std::collections::HashSet;
 use std::fmt;
 use std::io::{Read, Write};
+use std::sync::OnceLock;
 
 pub mod builder;
 pub mod cert;
@@ -429,6 +430,16 @@ pub fn compute_trust_set(anchors: &[RootAnchor]) -> TrustSet {
     }
 }
 
+/// Cached verify-only secp256k1 context.
+///
+/// Creating a `Secp256k1` context allocates and pre-computes lookup tables;
+/// reuse this for bulk verification rather than calling
+/// `verification_only()` per-signature.
+pub(crate) fn secp256k1_verify_ctx() -> &'static secp256k1::Secp256k1<secp256k1::VerifyOnly> {
+    static CTX: OnceLock<secp256k1::Secp256k1<secp256k1::VerifyOnly>> = OnceLock::new();
+    CTX.get_or_init(secp256k1::Secp256k1::verification_only)
+}
+
 pub fn hash_signable_message(msg: &[u8]) -> secp256k1::Message {
     let mut engine = sha256::Hash::engine();
     engine.input(SPACES_SIGNED_MSG_PREFIX);
@@ -451,7 +462,7 @@ pub fn verify_spaces_message(
     let sig = secp256k1::schnorr::Signature::from_slice(signature)
         .map_err(|_| SignatureError::InvalidSignature)?;
     let hashed = hash_signable_message(msg);
-    secp256k1::Secp256k1::verification_only()
+    secp256k1_verify_ctx()
         .verify_schnorr(&sig, &hashed, &xonly)
         .map_err(|_| SignatureError::VerificationFailed)
 }
@@ -470,7 +481,7 @@ pub fn verify_schnorr(
     let sig = secp256k1::schnorr::Signature::from_slice(signature)
         .map_err(|_| SignatureError::InvalidSignature)?;
     let msg = secp256k1::Message::from_digest(*msg_hash);
-    secp256k1::Secp256k1::verification_only()
+    secp256k1_verify_ctx()
         .verify_schnorr(&sig, &msg, &xonly)
         .map_err(|_| SignatureError::VerificationFailed)
 }
@@ -531,7 +542,7 @@ impl Zone {
         let sig = secp256k1::schnorr::Signature::from_slice(&signature.0)
             .map_err(|_| SignatureError::InvalidSignature)?;
 
-        secp256k1::Secp256k1::verification_only()
+        secp256k1_verify_ctx()
             .verify_schnorr(&sig, &msg, &pubkey)
             .map_err(|_| SignatureError::VerificationFailed)
     }
diff --git a/veritas/src/msg.rs b/veritas/src/msg.rs
index f312aa5..57ab28b 100644
--- a/veritas/src/msg.rs
+++ b/veritas/src/msg.rs
@@ -321,7 +321,7 @@ pub fn verify_records(
     let msg = crate::hash_signable_message(signable.bytes);
     let sig = secp256k1::schnorr::Signature::from_slice(&sig_data.sig)
         .map_err(|_| crate::SignatureError::InvalidSignature)?;
-    secp256k1::Secp256k1::verification_only()
+    crate::secp256k1_verify_ctx()
         .verify_schnorr(&sig, &msg, &pubkey)
         .map_err(|_| crate::SignatureError::VerificationFailed)
 }