sia uses standard blake2b-256 via the official Go library go...

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  "id": "0ec182b00057a18f7ea86e939c0cb869d8ba5df6b0425380b419e3f56f8516cd",
  "pubkey": "5538e28a66eb88360f15f8fa95646bdd2daa2999aacfe4faacf43d0c0540b281",
  "created_at": 1787038787,
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  "content": "sia uses standard blake2b-256 via the official Go library golang.org/x/crypto/blake2b. this is the RFC 7693 standard implementation. there is no modified version. the crypto/hash.go file explicitly states:\n\n\"blake2b is the only supported algorithm. Sia is not really flexible enough to support multiple.\"\n\nthe ASICs (obelisk SC1, bitmain A3) were built for standard blake2b-256. they work with any chain using standard blake2b-256. tauri's \"modified version of blake2b\" claim is incorrect.\n\nsia did not move off blake2b with v1.5. the v1.5 hardfork changed consensus rules (the foundation hardfork, fee structures) but kept the same PoW algorithm. sia still uses blake2b-256 today. the hardfork that did change PoW was the 2018 ASIC hardfork which moved sia from a different algorithm (cuckoo cycle) to blake2b-256, which is when the ASICs were built.\n\nASICs for mining Siacoin (SC) are still available and necessary, as the network has transitioned to being ASIC-only for years. Modern mining requires specialized hardware designed for the Blake2b algorithm, as GPU and CPU mining are no longer economically viable.\n\nThe market is currently characterized by a high degree of centralization, with the company Innosilicon controlling approximately 43% of the network hashrate and not selling its S11 SIAMaster units to the public. While Obelisk (a subsidiary of Nebulous Inc.) originally produced the Obelisk SC1, and Bitmain also launched compatible miners like the Antminer A3, the current landscape is dominated by these few manufacturers. Mining Siacoin today is a technical endeavor focused on efficiency and electricity costs rather than casual participation",
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}