Download Use on Web ( Community ⌄ Meet, chat, and party in the heart of the LBRY community. YouTube Partner Program Sync your content instantly and start earning Frequently Asked Questions Got questions? We probably have answers! Blockchain Explorer Look up transactions and claims on the LBRY blockchain Company ⌄ @lbry on LBRY Everything about LBRY, from LBRY, on LBRY Company News The latest from the LBRY team The Team Meet the people building LBRY and why they're doing it Roadmap The next steps in our journey Contact Have a question or want to connect with the LBRY, Inc. team? Credit Reports Quarterly reports on LBRY's blockchain assets Developers ⌄ Find a technical overview, specification, APIs, and more Follow @lbrytech on LBRY From the devs, for the devs. The Spec Read a formal technical description of how LBRY works GitHub All LBRY code is public and open-source Contributor's Guide Become a contributor to the LBRY project Search Try LBRY Menu Try LBRY

Development Update for August 2019

Tom Zarebczan • Sep 10 2019

Welcome to the August 2019 LBRY Development update! In this post we’ll show you what we’ve been up to since our last update in July. Sit tight, there’s been lots of progress and releases, including updates from the Apps (Desktop and Mobile), SDK, and blockchain teams!

To read previous updates, please visit our Development and Community Update archive.

If you want to see a condensed view of what we have completed recently and what’s planned for LBRY, check out our Roadmap.

First off, let’s start with some GitHub stats across all our repos (some of which are internal only to LBRY) since our last update about 40 days ago:
36 repos were updated. 617 issues and pull requests were created, 146 were closed. 18 pull requests were merged. 30 GitHub users outside of LBRY made code contributions, including:

Thanks to everyone who took time out of their busy days to help LBRY out!

In this report, we cover updates for

Desktop App

Since our last development update, the app team shipped our next named release, 0.35, under codename Franklin as well as a few patches. Franklin enhances the app experience with a brand new videojs-based video player.

Other new features in Franklin include:

  • The ability to continue watching videos in pop out mode
  • Support of range requests (streaming)
  • The ability to block channels app-wide

The patch releases included some new features:

  • All new features added to the SDK between version 0.38.5 and 0.40, including improved wallet sync behavior, download speeds, and overall connectivity (more details below)
  • Tipping on channel pages (which gets sent to the channel claim, as opposed to content claims on file pages)
  • Ability to set the time period for dark mode
  • Improvements to the display of URLs (now has the canonical URL which uses both channel and claim short IDs)
  • Support for a new daily watch reward that went live on September 10th (replacing the weekly LBRYCast)

The patches fixed many bugs, including:

  • Issues with bid amounts required on the publish page (did not show vanity URL bids),
  • Auto-downloading subscription content
  • Search bar focus getting stuck
  • Disabling autoplay on paid content
  • DMCA blocking to include entire channels

We also updated our digital certificate for Windows builds which is an annual maintenance task. We'll explore a better solution for this down the road.


Video Player and Download Settings

The new video player fixes multiple bugs from previous versions: most importantly the ability to set the volume, not being able to play back certain MP4 formats, and being able to skip anywhere in the video right away thanks to range requests (versus the previous version where you had to wait for it to download). It also allows us to add two new settings for saving hosted content and files, both of which are enabled by default. Users who wish to disable either or both are now able to, but turning off content hosting hurts the LBRY network because you no longer become a seeder. For non-streamable file types like games, documents, and 3d printing files, the files will download locally, regardless.


Desktop Next Steps

The app team also began development of our planned cross-device sync process (wallet + app data like tags/subscriptions/blocked channels, other settings) but we’re waiting on additional support from our SDK and API teams to finish up this feature - see the cross device update for more information. Continuing work on the video player, we’ll be adding features to save position and volume settings throughout the app which will also eventually be synced up.

We also are working on a more streamlined sign in/out process that will be featured in-app and on This will include a 1 LBC email reward for all users, including new ones, so that they can create a channel during the signup process (some users, such as those using a VPN, may not qualify). Once we get wallet sync fleshed out, this new login process will also include those options and ability to restore via email/password.

Another area that continues to get attention is internationalization. You may have noticed we added German as an additional language, and we’re making more changes under the hood to support a streamlined effort across all our projects. Finally, we’ll also be working on an improved balance display on the wallet page that shows how much LBC you have locked in claims/channels, supports, and tips.


On the SDK side of the house, we’ve shipped versions 0.39, with patches, and 0.40.0 with a recent patch. You can review all the changelogs on our GitHub releases page.

The main features include:

  • Treating multiple accounts inside a wallet to effectively be treated as one (missing a few API calls, to be completed soon)
  • ability to connect and synchronize transactions with multiple wallet servers (see screenshot below) which improves wallet sync speed and paves the way to interfacing with community wallet servers
  • Wallet server monitoring tools to include session information / logging of troublesome claim search queries
  • A key value store which will be the final location of synced LBRY data.
  • Added a new function for comments that allows channel owners to moderate comments by hiding them (to be implemented in the app in the next few months)

On SDK startup, we now ping all the wallet servers and select the best main one to connect to based on the peer’s location. The ability to connect/sync with multiple servers proved to be more troublesome than expected, we experienced and fixed reconnection issues which should be resolved with the 0.40.1 patch.

settings and wallet sync

SDK Next Steps

During testing of the YouTube transfer process, we ran into a snag with how our channel import/export process was designed, especially when the channel itself is transferred from one wallet to another which prevented both sides (YouTube Sync and the Content Creator) from signing claims. Progress has been made to support a short term solution for both cases, and we expect a resolution soon. Besides this bug, we are also looking into any remaining wallet syncing / connectivity problems, one affecting content announcement, and another that may cause memory leaks on some machines. If you think your node has suffered from either, please give us a shout on Discord.

Finally, we’ve also been researching and have begun initial implementation of a technique called holepunching, which will improve connectivity between nodes -- especially for those behind firewalls or with unusual network configurations. This may alleviate the need for port forwarding, but nodes that can do port forwarding will be encouraged to leave it on. We expect this to increase our overall network availability and performance.


Since our last update, the blockchain team continues their work towards enabling SegWit later this year, optimizing memory usage, revamping RPC calls to include bid (which will allow us to show pending effective amounts during takeovers) and sequence (which was removed in a previous update), and enabling metadata along with supports. Support metadata will enable us to expand the support/tipping feature of LBRY, which currently only allows simple LBC transactions to occur, to include additional metadata that can be used for signing the supports to prove channel ownership and enabling use cases like commenting, rating, and subscriptions on chain. Signing of supports will finally give us the ability to link a channel back to a tip transaction, so publishers can see and verify who sent LBC (or even a support). On-chain subscriptions also help further decentralize data you can only find on our API currently, and enable a Patreon-like system where creators can release content that’s accessible only by their supportors or at various support/tip levels.

Forced Upgrade - Pre 0.17.2 Nodes Go Offline

On August 16, 2019, the LBRY chain experienced an unexpected fork between the current version of lbrycrd (v0.17.2) and previous versions. The fork occured at block height 617743. Everything is back to normal currently on the latest release/chain, and we’ll continue to monitor the situation. If you are still running a pre 0.17.2 node, please see below on how to recover.

Read our blog post for the entire executive summary of the incident.

How to Recover a Pre 0.17.2 Node

Please upgrade your LBRYcrd node to the latest version on our GitHub release page. After you’ve run it, perform the following CLI command: lbrycrd-cli reconsiderblock b9a350fa8b4471c46cb2088927ac5e959939c815e7d98e8125f099b902e96a62 to get back up to speed. The other option would be to clear our your local data and resync from scratch.

Over the last few months, we’ve been running a view-only pilot of, meaning you can view free content, but many of the other features like wallets, rewards, and publishing have been disabled. We’ve also created and run stress tests on to make sure the web server and underlying SDK can handle thousands of concurrent users. In order to scale to even more users in the future, we will need to run multiple web and SDK servers.

Recently, we introduced application options on the Settings page, but none of these options persist between refreshes until we’re able to sync the settings to our interim API sync solution. Longer term, these will sync back to the wallet file once migrates from an account-based model to a wallet-based one that will support cross device syncing (today, syncing only works at a wallet level). The current SDK does not support multiple wallets, which is why we went with an account-based model (to at least ship a fully featured web experience without wallet sync).

We also added OpenGraph metadata to channels and claim links when shared on Twitter/Facebook and other sites that support it.



As mentioned in the Desktop summary, we’re in the process of implementing a typical login/logout process that most users are accustomed to. This will include a 1 LBC reward for a verified email (some VPN users may not qualify) that will allow new users to create a channel as part of the process. Once moves to a wallet model, it will also include wallet syncing/restore options. This change will include two top menu items instead of one: wallet and balance under your LBC total, and Overview + Publish under the Account icon. Users not logged in can still enjoy free content, but won’t see any of the right sidebar options, nor be able to customize the tag list.


Publishing on the Web

Publishing from the web is a bit trickier since the server will need to act as an intermediary between the user and the SDK running - so it needs to be able to handle/intercept the file transfer process. This is currently a work in progress and may not be ready for the first soft launch with wallets/rewards. Launch

We are preparing for soft launch of support with wallets and rewards. This will also include syncing tags, subscriptions, and other app settings, with wallet syncing to come at a later date (wallet notice will be shown to users with other installations). Publishing features are not too far behind, and if all goes well, we should see a full launch by the end of the month.

Want to be the first to know when it’s fully operational? Sign up for the mailing list at

LBRY for Android

Since our last update, the Android app has been playing catchup with the Desktop app’s discovery features - this includes the ability to follow tags and explore tags, create channels, and publish (and edit!) content. We’re also excited that some of the more profound performance problems with the Android app have been resolved under the hood - the latest release provides a much smoother experience navigating throughout the app. The publish process was streamlined for mobile purposes which includes automatic uploading of thumbnails. You can also tag your content, create a channel, select a URL, and adjust your default LBC bid. On another note, we have noticed some issues with syncing wallets on restore, so if you run into this, please reach out to us on Discord - we are still investigating but this will be solved once the SDK fully supports multiple accounts.


The discovery process, which resembles the Desktop application, allows you to customize your followed tags which are then shown on the "Your Tags" page - this includes a drop down to change between trending/top/new, along with a top level listing of content across all your tags, plus a break down for each tag you follow with an option to view the tag page (click the arrows, or More tile). Currently we have to limit this to 5 tags (randomized between runs) which are shown on the main page due to performance issues, but you can click on the rest of your tags at the bottom of the page to see their tag pages. The subscriptions area also received a revamp - you can now see Trending/Top/New views across all your subscriptions, or you can click on a specific creator to filter. The "All Content" page enables you to explore other LBRY content not in your tags (default setting) using the same Trending/Top/New sorting options (you can also choose to limit on tags you follow which is the view you’d get to by clicking More on the top item from the "Your Tags" homepage.


Android Next Steps

Next steps for Android include a richer channel process, which includes a My Channel pages and creation/editing area that will allow publishers to modify data like their title, thumbnail/cover images, bid, website, email, description, and tags. Be on the lookout for this featured in version 0.9, which will be the next named release. After this, we’ll be enabling our interim data/settings sync feature, add the ability to block channels, allow publishing of more file types (currently limited to videos/images), and the ability to save files locally.


We’ve got some exciting rewards updates in progress and coming out very soon! First off, we’ll be enabling a 1 LBC reward for a majority of users so they can take advantage of the new sign up flow which creates a channel for them. We are also currently experimenting with auto-enabling rewards for users with clean IP scores using a third party IP ranking system. This process will be further optimized to prevent abuse and also to check other IP attributes like ISP/location to enable more with auto-approvals.

Finally, we’ve recently sent our last LBRYCast email that will be tied to a weekly featured reward - this is now moving to a daily watch reward where users will be randomly awarded between 1 and 100 LBC. We’ll send an email as soon as this is available to claim. Enjoy the LBC!

Cross Device Syncing

As we’ve mentioned in other sections of this report, we ran into a snag with being able to implement wallet syncing if a user has multiple encrypted wallets (the sync tool is not aware of this yet) and being able to use this to sync settings back onto (SDK syncing is implemented wallet wide). Since wallet syncing on would require a move from an account to wallet based model (which is not yet supported), we decided on implementing a quicker API sync tool for settings + application data, so at least some data like tags and blocked channels can work cross device. This is currently in development along with the sign in/out feature and will also be supported on Desktop/Mobile.

The SDK already has support for a similar key value store as seen below, so once we have fully implemented multi-account awareness and multi-wallet support for, we can then sync up balances between all devices/wallets. We’ll still try to enable wallet sync on Desktop before it’s fully ready for all the scenarios we want to support - but we’ll have to limit it to previously un-synced users or if your balance is zero (so that we can enable the synced account, discarding the current one). So the main case we won’t be able to support right away is users who have an existing desktop wallet, and have another device that’s already synced (Desktop/Android).


YouTube Sync Transfers

During the last 2 months, the team has worked on bringing creators closer to their content and audience with a long awaited feature, currently in test phase: transferring ownership of synced content directly into creators’ app wallets and also allow new content publishing.

This feature is a culmination of efforts across multiple teams at LBRY: The SDK team was responsible for exposing the necessary tools to export and update channels and streams, the Backend team was responsible for exposing the endpoints necessary to initiate and pursue the process, the App team had to interface with such endpoints and last but not least, the YouTube sync team had to ensure the integrity of each channel before transferring everything to the creator.

The result is pretty fascinating and closes the last loop in the sync process: YouTube creators can click a single button in the app, immediately gain access to publish new content via their channel, and their wallet will soon be populated with all their content and channel claims, including all their tips being re-supported on their channel. We’re all super excited for this one!

Community Block Explorer

A community member by the name of Alessandro Spallina became interested in the LBRY ecosystem and wanted to implement a more modern and fully featured block explorer that exposes important metrics of the LBRY blockchain. You can check out his GitHub issue outlining what he plans on developing or you can go straight to the explorer prototype at to give it a shot We’d appreciate any feedback on the GitHub issue and current prototype - you can leave a comment on GitHub or reach out on Discord #dev channel by tagging @SK3LA.


2019 Roadmap

We’ve successfully accomplished a number of roadmap items fully, while others are partially complete and ongoing efforts. See our previous development report on updates for completed ones.

Partially completed/still in progress are:

  • Commenting - moderation features are in progress
  • Creator Features - granular account balances in process
  • Creator Partnerships - no update since last month - in progress and will be announced later this year
  • LBRY on the Web - account features which are set to go live this month.
  • Multi-Device Experience - app settings/data syncing in progress, wallet sync to come soon after.
  • Internationalization - ongoing internationalization enhancements are in progress on Desktop.
  • Protocol Performance - improved download performance in 0.39 releases. Holepunching research in progress.

Limited Reward Code!

We’ve got a special bonus for readers of this update, enjoy some LBC via this code (while supplies last!): dev-update-aug-jkala

Want to Develop on the LBRY ecosystem?

All of our code is open source and available on GitHub. Are you a developer and want to find out more? Check out our contributing guide and our LBRY App specific contributing document. Make sure you have turned on the Developer option in your email preferences (see app overview page), or sign up at We also have a LBRY Discourse Forum where developers can interact with the team and ask questions across all our different projects.

If you aren’t part of our Discord community yet, join us anytime and say hello!

Our community allows LBRYians to interact with the team directly and for us to engage users in order to grow the LBRY platform. Also follow us on Twitter, Facebook, Reddit, BitcoinTalk, and Telegram.

Thanks for supporting LBRY - stay tuned for more news and updates! And if you haven’t downloaded the LBRY app yet, what are you waiting for?

Photo of Tom Zarebczan
Tom Zarebczan · · ·

Tom discovered LBRY, as many have, through mining. His time spent in the LBRY Slack channels quickly grew his interest in the concept that was being developed, and the team doing the development. Tom found his place on the team providing top-notch support for (and driving the growth of) the LBRY user community, in addition to many other invaluable functions.

Tom holds a Bachelors in Computer Engineering from the New Jersey Institute of Technology, a Masters in Systems Engineering from Stevens Institute of Technology, and served his country proudly as a Civilian in the US Army for 7 years. When he's not monitoring LBRY Twitter, Reddit, Slack, and/or Discord looking for users in distress, Tom can be found doing geek-y stuff, or snowboarding in really cool places around the world.