producer-code-r8.3
About SN116 Carbon
Producer-side code release for the AX42 startup host, cut at main a2c79e2 on the owner's direct word ("Cut r8.3 when #1148 lands"), given in the PR Head session. Why this exists: r8.2 carries a defect, and this fixes it. #1148 corrects #1143's king field. In r8.2 the feed took the king from the ledger's latest record with no check that the record is the live deployment's incumbent, so after a cutover to a new deployment it would name the archived deployment's last winner as king. The feed is what the public dashboard displays, and the king's share carries a daily decay, so a wrong king is not cosmetic. The fix: the king is the ledger's latest record only while it is this deployment's current incumbent. live = store.incumbent(); if there is no incumbent, or it is a different model, no king is named. Handovers stay the Challenge's whole history. Covered by tests/cpu/test_validator_feed_king.py:: test_after_a_cutover_the_old_deployments_winner_is_not_the_king, parametrised over no incumbent and a different incumbent. Anyone on r8.2 publishing a feed across a cutover should upgrade. R8_2_UPGRADE section 2 was gated on this fix. The RELEASE_SCHED cutover of 2026-10-12 ran on r8.1, which has no king field at all (zero occurrences in score_feed.py against four in r8.2), so that cutover was never exposed. Also in this release, over r8.2 (8c698a3): #1144, the dashboard board.v2 mapping of #1143's feed fields: king share, halving and defences, handovers, target to beat, and the countdowns from as_of_block. Target bars render only with an OK rules card; king fields only for the released incumbent. #1145, SCORE-CEILING-01: the score proof prints the value's tau-ceiling line in selection.md and confirmation.md. Reporting only, reading the run's own decision losses. #1146, OWNER-DASHBOARD-SNAPSHOT-SECURITY-01, and #1149, OWNER-BANK-SCHEDULED-ROTATION-SECURITY-01: two owner security acceptances that had been given in session with no repository trace. Both are now recorded, with hi
Read the release notes on GitHub ↗
SN116 Carbon at a glance
SN116, Carbon (α token ъ), is one of the independent markets on the Bittensor network, each with its own α token and its own price. Its α currently trades at 0.035660 τ (≈ $10.23), against 1,845 τ of pool liquidity. On-chain, the best-delegated validator on it yields about 142.81% APR (simple) and 317.02% APY (compounded), emissions add 0.000000 τ to the pool each block, epochs run every 360 blocks. It was registered at block #9,210,632.
More from SN116 Carbon
Taosis indexes announcements, articles, posts and releases about Bittensor subnets from their own channels and keeps a record of each. The text above is the source’s; the figures are read from the chain by Taosis.