How are such designs adopted, or even how was the current Bitcoin logo design adopted, as I remember that Satoshi’s proposal was this logo?
It was created by bitboy back in 2010:
https://bitcointalk.org/index.php?topic=1631.msg19455#msg19455I guess adaption was easy back then - only few people were really active in the Bitcoin world, and most just liked bitboy's proposals.
There was also a topic created recently about on
Is there a glyph for a Satoshi and some designs were proposed without approval. The decentralized nature of the Bitcoin community will make it difficult to adopt a single sign. The small case
b looks like a brilliant design but the community is used to the
sat sign. Modifying or bringing a new design will be subject to the approval of the community because the power to do such doesn't rest on a single or group of individuals.