Created
November 16, 2018 20:04
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| import ecdsa | |
| import ecdsa.ellipticcurve as EC | |
| curve = ecdsa.SECP256k1 | |
| x = int('11db93e1dcdb8a016b49840f8c53bc1eb68a382e97b1482ecad7b148a6909a5c', 16) | |
| y = int('b2e0eaddfb84ccf9744464f82e160bfa9b8b64f9d4c03f999b8643f656b412a3', 16) | |
| point = EC.Point(curve.curve, x, y) | |
| pubkey = ecdsa.VerifyingKey.from_public_point(point, curve) | |
| hash1 = 90774958364900180671716888080665726921328827653065727390791155349203800699667 | |
| r1 = 97921318692748166969765893503724782362221860890089306445657980140065784098104 | |
| s1= 17870770544568028453805091504963125490615703388985597936947183001452377396233 | |
| sig = ecdsa.ecdsa.Signature(r1, s1) | |
| if pubkey.pubkey.verifies(hash1, sig): | |
| print("Good") | |
| else: | |
| print("Bad") | |
| hash1 = 70438975929202441702137589012525894517177874894451752259863210250765743151652 | |
| r1 = 67469108926628898148530592947733862172872496318648607111578457920563549925544 | |
| s1= 48322980310687297275040392060954045679965067960426297271026705220954611568793 | |
| sig = ecdsa.ecdsa.Signature(r1, s1) | |
| if pubkey.pubkey.verifies(hash1, sig): | |
| print("Good") | |
| else: | |
| print("Bad") |
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Detailed proof this is a forgery: https://medium.com/@jimmysong/faketoshis-nonsense-signature-8700a44536b5