News·SN34 BitMind GitHub·Mar 21, 2026, 20:01 UTC
Release 4.5.6
About SN34 BitMind
C2PA trust anchor validation for c2pa-python >= 0.29.0 Background c2pa-python==0.29.0 (released March 17 2026) changed c2pa-rs so that trust anchor checking is always enforced by default. Any certificate not chaining to a root CA in c2pa-rs's built-in store fires signingCredential.untrusted and hard-fails validation. We had pinned c2pa-python>=0.25.0,<0.29.0 as a short-term workaround. This restores previous behavior but leaves a cert-forgery gap: our code only string-matched on the issuer field, which an attacker could fake with a self-signed cert set to "Stability AI Ltd". What this PR does 1. Extracts and saves trust anchor PEM files Scanned miner-submitted media in /workspace/.cache/sn34 (88k entries, source_type = 'miner') to find one sample file per AI provider. Extracted the full DER certificate chains embedded in each file's C2PA JUMBF box and saved them to gas/verification/trust_anchors/. All major providers turned out to use private or non-CAI root CAs that are not in c2pa-rs's built-in store: Provider Cert chain root File Stability AI GlobalSign Root CA - R6 (via GlobalSign GCC R6 SMIME CA 2023) stability_ai.pem Runway (pre-Gen4) GlobalSign Root CA - R6 (same intermediate) runway.pem Runway Gen4 CN=Stability AI, O=Stability AI, C=US (private self-signed) runway_gen4.pem Black Forest Labs GlobalSign Root CA - R6 (same intermediate) black_forest_labs.pem Microsoft CN=Microsoft Supply Chain RSA Root CA 2022 (private self-signed) microsoft.pem OpenAI (via Truepic) CN=Truepic WebClaimSigningCA chain openai_truepic.pem Adobe CN=Adobe Product Services G4 chain adobe.pem Google CN=Google C2PA Root CA G3 (fetched from pki.goog/c2pa/root-g3.crt) google_c2pa.pem GlobalSign Root CA - R6 was sourced from the certifi bundle. Google's C2PA Root CA G3 was fetched directly from Google's PKI at http://pki.goog/c2pa/root-g3.crt. 2. Updates c2pa_verification.py Three additions at the top of the file, zero changes to existing verification logic: _load_trust_anchors() — concat
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SN34, BitMind (α token י), 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 0.011782 τ (≈ $2.68), against 34,675 τ of pool liquidity. On-chain, the best-delegated validator on it yields about 29.3% APR, emissions add 0.001745 τ to the pool each block, epochs run every 360 blocks. It was registered at block #3,493,948.
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