Blockchain

A blockchain , [1] [2] [3] originally block chain , [4] [5] is a growing list of records , called blocks , which are linked using cryptography . [1] [6] Each block contains a cryptographic hash of the previous block, [6] a timestamp , and transaction data (generally represented as a merkle tree root hash).

Page Revisions

Year Metadata Sections Top Words First Paragraph
2018

265165 characters

27 sections

57 paragraphs

17 images

470 internal links

191 external links

1. History

2. Structure

3. Uses

4. Types of blockchains

5. Academic research

6. See also

7. References

8. Further reading

9. External links

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ledger 0.081

fork 0.074

decentralized 0.070

cryptocurrencies 0.061

cryptocurrency 0.061

block 0.059

proof 0.057

hash 0.050

A blockchain , [1] [2] [3] originally block chain , [4] [5] is a growing list of records , called blocks , which are linked using cryptography . [1] [6] Each block contains a cryptographic hash of the previous block, [6] a timestamp , and transaction data (generally represented as a merkle tree root hash).

2017

293755 characters

28 sections

59 paragraphs

15 images

491 internal links

159 external links

1. History

2. Description

3. National currencies

4. Academic research

5. Projects

6. Predictions

7. See also

8. References

9. Further reading

10. External links

blockchain 0.850

blockchains 0.316

bitcoin 0.198

transactions 0.109

ledger 0.099

decentralized 0.087

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permissioned 0.055

cryptocurrencies 0.054

currency 0.054

contracts 0.053

fork 0.044

chain 0.043

distributed 0.042

proof 0.041

A blockchain , [1] [2] [3] originally block chain , [4] [5] is a continuously growing list of records , called blocks , which are linked and secured using cryptography . [1] [6] Each block typically contains a cryptographic hash pointer as a link to a previous block, [6] a timestamp and transaction data. [7] By design, blockchains are inherently resistant to modification of the data. The Harvard Business Review describes it as "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way." [8] For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority.

2016

232937 characters

22 sections

46 paragraphs

16 images

490 internal links

90 external links

1. History

2. Description

3. Applications

4. See also

5. References

6. Further reading

7. External links

blockchain 0.835

blockchains 0.361

bitcoin 0.195

transactions 0.089

decentralized 0.085

blocks 0.082

currency 0.068

chain 0.062

ethereum 0.059

ledger 0.059

proof 0.050

cryptocurrencies 0.049

permissioned 0.048

database 0.045

contracts 0.045

A blockchain [1] [2] [3] — originally block chain [4] [5] — is a distributed database that maintains a continuously-growing list of ordered records called blocks . Each block contains a timestamp and a link to a previous block. [6] : 6 By design blockchains are inherently resistant to modification of the data — once recorded, the data in a block cannot be altered retroactively.

2015

59061 characters

9 sections

18 paragraphs

3 images

137 internal links

27 external links

1. Name

2. Basic principles

3. Decentralisation

4. Token-less block chain debate

5. Data storage

6. Bitcoin sidechain implementations

7. Alternative chain designs

8. See also

9. References

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chains 0.091

ch 0.085

mvcc 0.085

A block chain or blockchain is a permissionless distributed database based on the bitcoin protocol [1] that maintains a continuously growing list of transactional data records hardened against tampering and revision, even by operators of the data store's nodes . The initial and most widely known application of the block chain technology is the public ledger of transactions for bitcoin [2] which would become the inspiration for similar implementations often known as altchains. [3]

2014

839 characters

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redirect 1.000