i create a private work with three nodes ,A,B,C.
i put file with ipfs add at A node . other node get data with ipfs get. i see data storage at blocks.
i modify file content in node A. i can,t get file at A node, even if i recover the content of modify.
192:Downloads iinda$ ipfs get QmabAfNFj32UYZnVY9iwg7hvHR2TSteEXvDUz4tzCC4hyH
Saving file(s) to QmabAfNFj32UYZnVY9iwg7hvHR2TSteEXvDUz4tzCC4hyH
1.13 GB / 1.13 GB [===============================================] 100.00% 42s
Error: The block referred to by ‘QmUwLnVUoNyU5qxA6UUWVJfS3RGJ2d7TEc2cJosT3GEpMB’ was not a valid merkledag node
how can i do ? a little modify cause data damage, How is data security guaranteed?