News·SN13 Data Universe GitHub·Jul 16, 2026, 23:14 UTC
fix(deps): bump bittensor to 10.3.0 — fixes NetUid(u16) metagraph sync failure
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Fix bittensor==9.9.0 → 10.3.0 in requirements.txt. Lowercase class aliases removed in 10.x → renamed the references the codebase used (type annotations + constructors only; bt.logging and .config attribute access untouched): bt.subtensor→bt.Subtensor, bt.metagraph→bt.Metagraph, bt.wallet→bt.Wallet, bt.axon→bt.Axon, bt.dendrite→bt.Dendrite, bt.config(...)→bt.Config(...). substrate-interface dropped. 10.x no longer depends on it, and it drags in scalecodec, which conflicts with 10.x's cyscale and breaks import bittensor outright. common/api_client.py now imports Keypair from bittensor_wallet (fallback to the legacy package for older installs), and the stale substrate-interface==1.7.11 pin is removed. Verification (end-to-end on 10.3.0, live finney) MetagraphSyncer.do_initial_sync() — the exact class in the stack trace — now succeeds: netuid=13, n=256. Fails on the installed 9.0.0. common/api_client.py auth signing (TaoSigner) verified with the bittensor_wallet Keypair — produces valid X-Tao-Signature headers. Confirmed the 10.3.0 environment has no scalecodec (only cyscale), so import bittensor is clean. All edited files compile on py3.11 and py3.13; test_s3_validation_results_client.py passes (4/4). Rollout safety bittensor 9.0.0 already exposes the capitalized aliases, so this code change is backward-compatible with the currently-installed SDK — the code and the pip install do not have to flip in the same instant. Deploy: merge → pip install -r requirements.txt on validator/miner hosts → restart. ⚠️ Major version jump (9→10). Recommend one validator host canary before fleet-wide restart, watching for a clean Successfully synced metagraph for 13 and a normal weight-set cycle.
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SN13, Data Universe (α token ν), 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 0.005567 τ (≈ $1.26), against 19,935 τ of pool liquidity. On-chain, the best-delegated validator on it yields about 68.9% APR, emissions add 0.000010 τ to the pool each block, epochs run every 360 blocks. It was registered at block #1,907,637.
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