check / check (push) Successful in 2m40s
The seed is computed over the mnemonic string itself, and only its ends were trimmed, so the same words one per line, tab-separated or double-spaced passed the checksum but gave different keys. The words are now joined with single spaces before the checksum and the seed. A test shows each of those three spacings gives the README SSH vector, and the README section on giving the mnemonic says so. Model: opus-5-5