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2,780 筆紀錄總計 識別碼: coldcard × · JSON Feed · 所有紀錄 (JSON)

• 13d ago 評級變更 provider coldcard
  details

  Grade A→D + critical incident: July 2026 Coldcard firmware seed-entropy exploit (~1,816 BTC/~$116M, remote key derivation via 2021 PRNG bug). Core-security failure; D not F given Coinkite responsible response. Prior verification predated the exploit.

• 123d ago 更新 provider coldcard
  details

  {"provider":{"id":"coldcard","category":"wallets","subcategory":"Hardware","name":"Coldcard","tagline":"Bitcoin-only hardware wallet by Coinkite. Air-gapped via PSBT-on-SD. Reference signer for Bitcoin maxis.","review":"Bitcoin-only hardware wallet that signs PSBTs via SD card — never plugs into a network-connected machine. Open-source firmware, secure element (Microchip ATECC608A). 'Mk4' model is current; supports BIP39/BIP85, taproot, multisig. The signer pattern of choice when paired with Sparrow/Specter for multi-vendor multisig setups.","kyc_tags":["light_kyc"],"feature_tags":["non_custodial","open_source","multisig_supported","audited"],"rating":{"stars":null,"count":0,"grade":"A"},"fees":{"summary":"$120 hardware · Bitcoin-only · PSBT-via-SD"},"links":{"web":"https://coldcard.com","outbound_slug":"coldcard","twitter":"https://x.com/nvk","telegram":"https://t.me/coldcard"},"highlight_tags":["HARDWARE","BTC-ONLY","PSBT"],"last_verified":"2026-05-13","operating_since":"2017","_seed

• 124d ago 更新 provider coldcard
  details

  {"provider":{"id":"coldcard","category":"wallets","subcategory":"Hardware","name":"Coldcard","tagline":"Bitcoin-only hardware wallet by Coinkite. Air-gapped via PSBT-on-SD. Reference signer for Bitcoin maxis.","review":"Bitcoin-only hardware wallet that signs PSBTs via SD card — never plugs into a network-connected machine. Open-source firmware, secure element (Microchip ATECC608A). 'Mk4' model is current; supports BIP39/BIP85, taproot, multisig. The signer pattern of choice when paired with Sparrow/Specter for multi-vendor multisig setups.","kyc_tags":["light_kyc"],"feature_tags":["non_custodial","open_source","multisig_supported","audited"],"rating":{"stars":null,"count":0,"grade":"A"},"fees":{"summary":"$120 hardware · Bitcoin-only · PSBT-via-SD"},"links":{"web":"https://coldcard.com","outbound_slug":"coldcard","twitter":"https://x.com/nvk","telegram":"https://t.me/coldcard"},"highlight_tags":["HARDWARE","BTC-ONLY","PSBT"],"last_verified":"2026-05-13","_seed_i18n":{"zh":{"tagline":"

• 124d ago 更新 provider coldcard
  details

  {"provider":{"id":"coldcard","category":"wallets","subcategory":"Hardware","name":"Coldcard","tagline":"Bitcoin-only hardware wallet by Coinkite. Air-gapped via PSBT-on-SD. Reference signer for Bitcoin maxis.","review":"Bitcoin-only hardware wallet that signs PSBTs via SD card — never plugs into a network-connected machine. Open-source firmware, secure element (Microchip ATECC608A). 'Mk4' model is current; supports BIP39/BIP85, taproot, multisig. The signer pattern of choice when paired with Sparrow/Specter for multi-vendor multisig setups.","kyc_tags":["light_kyc"],"feature_tags":["non_custodial","open_source","multisig_supported","audited"],"rating":{"stars":null,"count":0,"grade":"A"},"fees":{"summary":"$120 hardware · Bitcoin-only · PSBT-via-SD"},"links":{"web":"https://coldcard.com","outbound_slug":"coldcard","twitter":"https://x.com/nvk","telegram":"https://t.me/coldcard"},"highlight_tags":["HARDWARE","BTC-ONLY","PSBT"],"last_verified":"2026-05-13","_seed_i18n":{"zh":{"tagline":"