Welcome to the November edition of the Substrate Developer newsletter. Let’s dive right in with a quote from Buckminster Fuller:
“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.”
Substrate Seminar will be streaming on Twitch going forward, on the brand new PolkadotDev channel (still in beta for now). Subscribe to stay updated on all the great content we have in the pipeline. You can also easily add all the upcoming seminars to your calendar by subscribing to the Seminar calendar. There are ongoing discussions to rename Substrate Seminar to something more general. Please join the discussion here.
Anagolay has built a Web3 API Auth Token (WAAT) library that can be used for authorising user interactions with dApps or wallets, as well as for verifying data integrity in information exchange. Learn more here.
Helikon Labs have released the alpha version of ChainSynth, a first step in the creation of a generative audio-visual synthesizer that works with real-time blockchain data. The source code and more information can be found in the project repository.
Read all of last month’s updates from ink!, the smart contract language for the Polkadot network.
Check out these new tutorials by members of Parity’s support engineering team:
wss://rococo-statemint-rpc.polkadot.io
) has been updated to wss://rococo-rockmine-rpc.polkadot.io
CheckOnlySudoAccount
. It ensures that only transactions signed by the sudo account are accepted by the transaction pool – useful for chains going live that want to avoid transaction spamming (#12496).frame_support
called DefensiveTruncateFrom
. It truncates a vec so that it satisfies the bound when passed into a BoundedVec
(#12515).#[pallet(dev_mode)]
, the macro sets weights to 0 if they aren’t specified and automatically sets a default MaxEncodedLen
if it isn’t already set. Please note that this feature is meant for development only, production code will not compile with this attribute. This provides a major improvement for the FRAME developer experience (#12536).Visit Polkadiff for a full list of merged PRs into Substrate, Polkadot and Cumulus since the last Polkadot release. For more information on the upcoming Polkadot and Kusama releases, check out this post from the Polkadot forum.
Have a look at all the open roles in the ecosystem on the Substrate Job Board.
Got ideas for content you’d like to see in future newsletters? Make a PR to the next edition here – we’d love to include them. ❤️