The GLV optimization has been integrated in libsecp256k1 since day 1, in 2013. It has just been default off.
TD Logo: https://i.gyazo.com/aa0d5f97954bd497b2f8b3a515752b34.png
Plaids iframe for TD: https://i.gyazo.com/41fd14755c25d83642359a054f9525d6.png
Users have complained about the mismatch, iv tried contacting plaid but it hasn't gone anywhere.
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