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This test specified a valid ECDSA signature and EC key (the same as ecdsa-prime256v1-sha512.pem)
The problem however is the signature algorithm is indicated as being RSA PKCS#1 v1.5.
Signature verification consequently should fail.
$ openssl asn1parse -i < [PUBLIC KEY]
0:d=0 hl=2 l= 89 cons: SEQUENCE
2:d=1 hl=2 l= 19 cons: SEQUENCE
4:d=2 hl=2 l= 7 prim: OBJECT :id-ecPublicKey
13:d=2 hl=2 l= 8 prim: OBJECT :prime256v1
23:d=1 hl=2 l= 66 prim: BIT STRING
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEnLDPaTA9r8dh1ORoe07PA55tNKuWSvgIENjVWKS
o1vctUSM6F4iSCobuCKGWLHnvoxf7eHnil9rSFG25lfoceA==
-----END PUBLIC KEY-----
$ openssl asn1parse -i < [ALGORITHM]
0:d=0 hl=2 l= 13 cons: SEQUENCE
2:d=1 hl=2 l= 9 prim: OBJECT :sha512WithRSAEncryption
13:d=1 hl=2 l= 0 prim: NULL
-----BEGIN ALGORITHM-----
MA0GCSqGSIb3DQEBDQUA
-----END ALGORITHM-----
-----BEGIN DATA-----
bikyFTMBpO72gOZCiSmtrpiMEI1mijH/VdBImUfXX/gaRr+J6E1kAfAjvm6HaI+814TXhcqEZzV
SSstS0ARSyEBApHnnzDMJNkQdk7vnIqlDKm4dsRK1yUA7ECcssTR/1hnUY/ep0iOtdv3gbYpog1
APuEMjWr/5jiQb37VTjD4=
-----END DATA-----
$ openssl asn1parse -i < [SIGNATURE]
0:d=0 hl=2 l= 71 prim: BIT STRING
-----BEGIN SIGNATURE-----
A0cAMEQCIEufkeQoUocmGh0ckjz2Gc1SwXXP5/G+YKUljGEDSLo9AiAoxF+QHXHEGymGOOwNaoX
X/LDDO7/sWpyBCEa2OSiahA==
-----END SIGNATURE-----
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