🛡️ Cathedral rebuilds deprecated SN39 into verified confidential compute infrastructure 🛡️
Cathedral has spent four months rebuilding the deprecated SN39 slot into a functioning verified-compute product powered by Intel TDX confidential sandboxes, signed receipts, and open-source verification.
🔑 Key points
🔹 1,092 public commits: Cathedral’s open development process produced more than 550,000 lines of code.
🔹 408,000 lines in production: A substantial portion of the codebase is reportedly active in the current product.
🔹 Hardware-isolated execution: Each verified job runs inside a fresh Intel TDX confidential sandbox.
🔹 $0.20 per execution: Developers can run verified workloads at a starting cost of 20 cents, with pricing expected to improve as miner capacity increases.
🔹 Signed receipts prove execution: Each job generates a cryptographic receipt containing hardware-attestation evidence.
🔹 Offline verification is available: Anyone can independently validate a receipt without trusting Cathedral’s servers.
🔹 Distillery recycles idle capacity: Unused sandboxes can rotate into AI-agent training environments, converting idle CPU resources into verified post-training evaluation data.
🔹 Product works without token emissions: Cathedral is accepting commercial demand independently of whether the subnet receives emissions.
🔹 Bittensor provides the scaling layer: The network could coordinate independent miners who absorb hardware keep-alive costs and expand capacity as demand increases.
🔹 Dedicated subnet transition planned: Cathedral is moving to its own dedicated slot while retaining the same product and development direction.
🔎 Why it matters
🔹 Cathedral is demonstrating a practical use case for verifiable computation rather than simply selling access to raw compute.
🔹 Signed receipts and hardware attestation address a central problem in decentralized infrastructure: proving that a workload actually ran as claimed.
🔹 The current system remains dependent on centralized Intel TDX hardware, limiting geographic scale and available capacity.
🔹 Bittensor’s potential role is not replacing the product but helping distribute and scale the infrastructure through miner incentives.
🎯 Bottom line: Cathedral has turned a deprecated subnet slot into a working confidential-compute product with auditable execution and commercial pricing. The architecture is promising, but the next challenge is moving from a centralized MVP to genuinely distributed compute without sacrificing verification, performance, or user trust.
https://taodaily.io/cathedrals-journey-from-a-deprecated-subnet-slot-sn39-to-verified-sandbox-compute/