The signature Wright posted is a signature from a transaction on the blockchain (and therefore cannot be a signature of a Nobel prize refusal speech or whatever other message he claims): https://blockchain.info/tx/828ef3b079f9c23829c56fe86e85b4a69...
The above tx's scriptSig: 3045022100c12a7d54972f26d14cb311339b5122f8c187417dde1e8efb6841f55c34220ae0022066632c5cd4161efa3a2837764eee9eb84975dd54c2de2865e9752585c53e7cce01
The signature Wright posted:
$ echo 'MEUCIQDBKn1Uly8m0UyzETObUSL4wYdBfd4ejvtoQfVcNCIK4AIgZmMsXNQWHvo6KDd2Tu6euEl13VTC3ihl6XUlhcU+fM4=' | base64 -d | xxd -p 3045022100c12a7d54972f26d14cb311339b5122f8c187417dde1e8efb68 41f55c34220ae0022066632c5cd4161efa3a2837764eee9eb84975dd54c2 de2865e9752585c53e7cce
The signature Wright posted is a signature from a transaction on the blockchain (and therefore cannot be a signature of a Nobel prize refusal speech or whatever other message he claims): https://blockchain.info/tx/828ef3b079f9c23829c56fe86e85b4a69...
The above tx's scriptSig: 3045022100c12a7d54972f26d14cb311339b5122f8c187417dde1e8efb6841f55c34220ae0022066632c5cd4161efa3a2837764eee9eb84975dd54c2de2865e9752585c53e7cce01
The signature Wright posted: