Public ledger of every directory change — grade bumps, KYC re-tests, sponsorship activations, incident updates. We log it so visitors can verify our claim that the editorial firewall holds.
The list is the product; this is the receipt of how it changes.
xmr.club
{"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{"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":"{"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":"