go-blockchain, v1.4-alpha

The library that implements models and algorithms of blockchain.

Add to the block model the comparison for equality with another block; add to the storage the deleting of a block.

Change Log

• models:
  • block:
    • operations:
      • comparison for equality with another block;
• storages:
  • operations:
    • deleting a block;
    • deleting a block group (optional);
  • wrappers:
    • wrapper that adds support for deleting a block group to those storages that cannot do this.

Features

• models:
  • block:
    • storing:
      • timestamp;
      • custom data;
      • hash;
      • previous hash;
    • operations:
      • creation (using a proofer);
      • getting merged data;
      • comparison for equality with another block;
      • self-validation (using a proofer);
  • genesis block:
    • based on a usual block without a previous hash;
  • block group:
    • storing:
      • group of blocks;
    • operations:
      • self-validation (using a proofer):
        • modes:
          • as a full blockchain;
          • as a blockchain chunk;
        • takes into account a prepended chunk;
        • allows empty block groups;
      • validation of the last block (using a proofer):
        • modes:
          • as a full blockchain;
          • as a blockchain chunk;
  • block group loaders:
    • loading block groups via the external interface;
    • automatically saving the loaded block groups to a storage;
    • wrappers:
      • chunk validating loader:
        • automatically validates the loaded block group as a blockchain chunk;
      • last block validating loader:
        • automatically validates the last block from the loaded block group;
        • automatically preloads the next block group to perform the above validation;
      • memoizing loader:
        • remembers loaded block groups;
        • restricts the quantity of the remembered block groups:
          • stores the loaded block groups in the LRU cache;
    • kinds:
      • memory loader:
        • loading blocks from the block group;
  • blockchain:
    • storing:
      • storage;
      • last block;
    • operations:
      • creation:
        • loading the last block from the storage;
        • when the storage is empty (optional):
          • creation a genesis block using a proofer;
          • storing the genesis block to the storage;
      • loading block groups from the storage;
      • adding a block:
        • creation a block using a proofer;
        • storing the block to the storage;
• proofers:
  • operations:
    • block hashing;
    • block validation;
  • kinds:
    • proof of work:
      • based on the Hashcash algorithm;
      • additional storing in a block (in a hash actually):
        • nonce;
        • target bit;
• storages:
  • operations:
    • loading block groups;
    • loading the last block;
    • storing a block;
    • storing a block group (optional);
    • deleting a block;
    • deleting a block group (optional);
  • wrappers:
    • wrapper that adds support for the following operations to those storages that cannot do them:
      • storing a block group;
      • deleting a block group;
  • kinds:
    • memory storage:
      • storing blocks in memory.

Repository

Link: https://github.com/thewizardplusplus/go-blockchain/tree/v1.4-alpha.

Content: code.

License: MIT.