Polkadot
[https://polkadot-java.github.io/]
[https://github.com/polkadot-java/api/]
Polkadot Protocol Specification
[https://github.com/w3f/polkadot-spec]
Transaction Construction and Signing
[https://wiki.polkadot.network/docs/ru/build-transaction-construction]
How to Claim Moonbeam Crowdloan Rewards
01.2022 [https://moonbeam.foundation/tutorials/claim-moonbeam-crowdloan-rewards/]
[https://github.com/PureStake/moonbeam]
sr25519
[https://wiki.polkadot.network/docs/en/learn-keys]
Extracting the Private Key from Schnorr Signatures that reuse a Nonce
[https://b10c.me/blog/009-schnorr-nonce-reuse-challenge/?=h]
Polkadot apps
[https://polkadot.js.org/apps/#/accounts]
Substrate
Developer hub
[https://substrate.dev/en/]
Cryptography (ECDSA, Ed25519, SR25519)
[https://substrate.dev/docs/en/knowledgebase/advanced/cryptography]
Hyperledger
[https://wiki.hyperledger.org/display/iroha]
[https://github.com/hyperledger/iroha-java]
Mnemonic generation
[https://github.com/NovaCrypto/BIP39]
Web3j Ethereum
Lightweight Java and Android library for integration with Ethereum clients
[https://github.com/web3j/web3j]
[https://github.com/MyEtherWallet/mew-wallet-android-kit]
WalletConnect [https://docs.walletconnect.com/quick-start/wallets/kotlin]
Wallets and libs
library to use WalletConnect with Kotlin or Java
[https://github.com/WalletConnect/kotlin-walletconnect-lib]
dApps
The beacon sdk allows Android developers of dApps and wallets on Tezos to implement the wallet interaction standard tzip-10.
[https://github.com/airgap-it/beacon-android-sdk]
Fearless wallet
Security in Fearless Wallet
[https://medium.com/fearlesswallet/security-in-fearless-wallet-773151bf64cb]
Trust wallet core
[https://github.com/trustwallet/wallet-core]
Infura
[https://infura.io/docs]
CoinGecko API
[https://www.coingecko.com/en/api/documentation]
ox api
[https://0x.org/docs/api]
web3 android
[https://github.com/web3j/web3j]
Bitcoin js
[https://github.com/bitcoinjs/bitcoinjs-lib]
Secp256k1, keccaktiny
[https://github.com/Boilertalk/secp256k1.swift]
sjcl
[https://github.com/bitwiseshiftleft/sjcl]
Bitcoin api
[https://www.blockchain.com/api]
Bitcoin lightning network
[https://github.com/LN-Zap]
WalletConnect
[https://github.com/WalletConnect]
Virto
[https://github.com/virto-network]
Avalanche
[https://www.avax.network/]