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Results tagged with blockchain
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user 52683
The journal of all confirmed Bitcoin transactions. The blockchain consists of a linked sequence of blocks and each block contains a list of transactions.—Please use [blockchain.info] for the eponymous UK-based company.
2
votes
2
answers
156
views
Blockchain and user rights to ask for personal data removal
This seems impossible with a blockchain technology: we cannot remove past blocks without breaking the whole structure integrity. … How to deal with the legal right of data removal for users in a blockchain paradigm? …
- 364
0
votes
1
answer
124
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Does the 100+ GB blockchain database contain every transaction?
Does the 100+ GB blockchain database contain every transaction since the beginning, or only a digest of them? … thus this question: is the 100+ GB blockchain already the result of a space-saving lossy process? …
- 364
0
votes
1
answer
1k
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Why is only the block header SHA256-hashed and not the whole block?
I read in many places that mining involves finding nonce such that SHA256(SHA256 (blockheader_including_nonce)) meets a specific criteria (0 bits...).
Why is this hashing done only on the < 100 bytes …
- 364
1
vote
1
answer
314
views
How does Bitcoin know if enough BTC are available for an account to allow a transaction?
Let's consider this simplified blockchain:
BLOCK 108
address ddd111 received 2 BTC by mining block 108
BLOCK 109
address abc123 received 2 BTC by mining block 109
BLOCK 110
address xyz999 created with …
- 364