i'm sure many other users and me would like to be able to create a favorites list (with their own collectibles that are in their possession) so that they can immediately notice unexpected activity from the BTC address in question and react quickly if necessary.
Hello - to a degree, this is possible using the featureset described here: https://bitcointalksearch.org/topic/m.64398604
While I'm still working on the "Portfolio" feature (as mentioned before, some privacy concerns around there - it's a bit more effort to implement in a manner where I don't gain certain knowledge of who owns which items), I have updated the telegram bot to support subscriptions.
In addition to the channel at https://t.me/collectible_money, anyone can now chat with https://t.me/collectible_btc_bot to subscribe to receive a more curated set of alerts.
Subscriptions are supported for creators, series, and individual items.
To subscribe, simply copy the URL for the creator, series, or item you are interested in and sent it to the bot as follows (one URL per message only):
# Receive updates for all items by a creator
/subscribe https://collectible.money/creator/icarus
# Receive updates for an entire series
/subscribe https://collectible.money/series/casascius-s1-1btc
# Receive updates for just one item
/subscribe https://collectible.money/item/SATORI-09749
Similarly, you can unsubscribe from alerts by sending an "/unsubscribe
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Unfortunately, the UX around this is a little unhelpful if you want to import a lot of individual items - I'll look into a few options to simplify this where possible