docs(bip-0046): add endpoint signing example

Author: theborakompanioni

bip-0046.mediawiki

@@ -131,10 +131,10 @@ address             = bc1qhhhf29f4nlyalyfrrpfrknxj9uwqk4qsyvkujsa7w0ulfur78xksps
 // p2pkh address is the p2pkh address corresponding to the derived public key, it can be used to verify the message
 //  signature in any wallet that supports Verify Message.
 // As mentioned before, it is more important for implementors of this standard to support signing such messages, not verifying them
-Message       = fidelity-bond-cert|020000000000000000000000000000000000000000000000000000000000000001|375
-Address       = bc1qhhhf29f4nlyalyfrrpfrknxj9uwqk4qsyvkujsa7w0ulfur78xkspsqn84
+message       = fidelity-bond-cert|020000000000000000000000000000000000000000000000000000000000000001|375
+address       = bc1qhhhf29f4nlyalyfrrpfrknxj9uwqk4qsyvkujsa7w0ulfur78xkspsqn84
 p2pkh address = 16vmiGpY1rEaYnpGgtG7FZgr2uFCpeDgV6
-Signature     = H2b/90XcKnIU/D1nSCPhk8OcxrHebMCr4Ok2d2yDnbKDTSThNsNKA64CT4v2kt+xA1JmGRG/dMnUUH1kKqCVSHo=
+signature     = H2b/90XcKnIU/D1nSCPhk8OcxrHebMCr4Ok2d2yDnbKDTSThNsNKA64CT4v2kt+xA1JmGRG/dMnUUH1kKqCVSHo=
 
 // 2nd timelocked address = m/84'/0'/0'/2/1
 derived private_key = KxctaFBzetyc9KXeUr6jxESCZiCEXRuwnQMw7h7hroP6MqnWN6Pf
@@ -163,11 +163,20 @@ redeemscript        = 0580785df400b175210308c5751121b1ae5c973cdc7071312f6fc10ab8
 scriptPubKey        = 0020803268e042008737cf439748cbb5a4449e311da9aa64ae3ac56d84d059654f85
 address             = bc1qsqex3czzqzrn0n6rjayvhddygj0rz8df4fj2uwk9dkzdqkt9f7zs5c493u
 
-// Test certificate using the 960th timelocked address
-Message       = fidelity-bond-cert|020000000000000000000000000000000000000000000000000000000000000001|750
-Address       = bc1qsqex3czzqzrn0n6rjayvhddygj0rz8df4fj2uwk9dkzdqkt9f7zs5c493u
-p2pkh address = 1JmTqEXY9pHwrao9XXPo1MeiQerMETmwP3
-Signature     = H9LWcv9PXjOLdGmA6s6jRKnPP9bKeOSUGN7ZF80dphKOUrLQnoIJx8NtHraTq5o6BbRBoNjKHuo4Mnok3/JXGBY=
+// Test certificate and endpoint signing using the first timelocked address = m/84'/0'/0'/2/0 (see above)
+bond private_key          = L2tQBEdhC48YLeEWNg3e4msk94iKfyVa9hdfzRwUERabZ53TfH3d
+bond p2pkh address        = 16vmiGpY1rEaYnpGgtG7FZgr2uFCpeDgV6
+
+certificate private_key   = KyZpNDKnfs94vbrwhJneDi77V6jF64PWPF8x5cdJb8ifgg2DUc9d
+certificate public_key    = 0330d54fd0dd420a6e5f8d3624f5f3482cae350f79d5f0753bf5beef9c2d91af3c
+certificate p2pkh address = 1JaUQDVNRdhfNsVncGkXedaPSM5Gc54Hso
+
+certificate message       = fidelity-bond-cert|0330d54fd0dd420a6e5f8d3624f5f3482cae350f79d5f0753bf5beef9c2d91af3c|375
+certificate signature     = INOP3cB9UW7F1e1Aglj8rI9QhnyxmgWDEPt+nOMvl7hJJne7rH/KCNDYvLiqNuB9qWaWUojutjRsgPJrvyDQ+0Y=
+
+// example endpoint signing two IRC nicknames (used in JoinMarket)
+endpoint message          = J54LS6YyJPoseqFS|J55VZ6U6ZyFDNeuv
+endpoint signature        = H18WE4MugDNoWZIf9jU0njhQptdUyBDUf7lToG9bpMKmeJK0lOoABaDs5bKnohSuZ0e9gnSco5OL9lXdKU7gP5E=
 </pre>
 
 Code generating these test vectors can be found here: https://github.com/chris-belcher/timelocked-addresses-fidelity-bond-bip-testvectors