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Firstly thanks a lot for the anwsers and your help i really appreciate it, cuz i found difficulties when asking that kind of Questions just a few people reply and answer question 
what a form that the nonce take (Numbers ...)? and from where it is generated ?
but the other unrewarded pools can create a block and win the reward in the next (x) time ?
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6. in simplified terms the block header has a nonce. ASIC create a hash that is the block header and where the nonce changes. this makes the hash change. they keep changing the nonce until they find a hash that meets the difficulty requirements
what a form that the nonce take (Numbers ...)? and from where it is generated ?
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7. imagine it like 15 different groups(pools) racing each other to get a block hash result that meet the rules. only one can win per block.
but the other unrewarded pools can create a block and win the reward in the next (x) time ?
i hv some question that make me confused 
1 - is after the creation of the genesis block we can say that the network now is safe and it will be safe ? because all the upcoming blocks will be rely on that block ?
2 - is the Block Hash just the sum of the Txs in the block decrypted with Hash Function Tech + the previous block hash ( is those things considered as Input that gives the Output ( block hash ) ) ? is this correct ?
3 - is every Tx inside the block has its own Hash ?
4 - if someone in the network that own 15% of the global HashRate want to modify a block in which way he can do it (manually or ...) ?
5 - if someone or some entity in the network that own 51% of the global HashRate want to modify a block in which way he can do it (manually or ...) ?
6 - is the calculation that the miners do is some sort of x + 15 = 2 so they need to calculate this to create a block the first one who find x = -13 gets a reward ? is this correct ?
7 - if a miner A create a block he gets a reward from the network ?
8 - if a miner B just validate Txs don't create any block what he should get as a reward ?
1 - is after the creation of the genesis block we can say that the network now is safe and it will be safe ? because all the upcoming blocks will be rely on that block ?
2 - is the Block Hash just the sum of the Txs in the block decrypted with Hash Function Tech + the previous block hash ( is those things considered as Input that gives the Output ( block hash ) ) ? is this correct ?
3 - is every Tx inside the block has its own Hash ?
4 - if someone in the network that own 15% of the global HashRate want to modify a block in which way he can do it (manually or ...) ?
5 - if someone or some entity in the network that own 51% of the global HashRate want to modify a block in which way he can do it (manually or ...) ?
6 - is the calculation that the miners do is some sort of x + 15 = 2 so they need to calculate this to create a block the first one who find x = -13 gets a reward ? is this correct ?
7 - if a miner A create a block he gets a reward from the network ?
8 - if a miner B just validate Txs don't create any block what he should get as a reward ?
is the block headers are transactions informations (the sender the receiver/time/amount .. etc)
No. The block headers contains the merkel root which contains the transaction hashes which are assembled. They do not contain specific transaction information persay.so the validity of a transaction depends on the Bitcoin Blockchain Algorithm Rules (Mathematically) is this correct ?
Protocol rules: https://en.bitcoin.it/wiki/Protocol_rules.so the pool alse could be called as huge Node, is this correct ?
Pools should be running a node, probably not a reference implementation though. Pools do not have to run a node explicitly, the only thing that they need is the transaction information, previous block hash and all that. These can be easily obtained from various sources.Thanks a million for your help, so helpful thanks a lot again
first of all thanks a lot for your help i really appreciate it cuz it was a long time looking for the answer of these questions
so the pool alse could be called as huge Node, is this correct ?
2- we know that the miners doing calculation through POW ? is it the same calculation of the hash tx ?
They hash the block headers which contains a wide array of data and the result is the block hash.
is the block headers are transactions informations (the sender the receiver/time/amount .. etc)They hash the block headers which contains a wide array of data and the result is the block hash.
3- is the block that is created by a miner doesnt valide untill it is validated by all the miners in the network ? is that correct ? and how it is considered as a valide block ?
A block is valid if the nodes in the network think that it is valid. If the miner follows the protocol rules, then those who also follow the protocol rules should agree that the block is valid. If not, then they would be on a different fork since they don't accept that block while those who do builds on it.
The requirement for the block to be valid is quite broad, the crux of it is just that it follows the protocol rules which all of the reference nodes follow.
so the validity of a transaction depends on the Bitcoin Blockchain Algorithm Rules (Mathematically) is this correct ?A block is valid if the nodes in the network think that it is valid. If the miner follows the protocol rules, then those who also follow the protocol rules should agree that the block is valid. If not, then they would be on a different fork since they don't accept that block while those who do builds on it.
The requirement for the block to be valid is quite broad, the crux of it is just that it follows the protocol rules which all of the reference nodes follow.
4- is every miner considered as Node in Bitcoin Network ?
Technically, it used to be. However, when pools came out, people found it more worthwhile to be mining together instead of separately. Most of the miners now don't run a node anymore due to the numerous benefits of pools.
Technically, it used to be. However, when pools came out, people found it more worthwhile to be mining together instead of separately. Most of the miners now don't run a node anymore due to the numerous benefits of pools.
so the pool alse could be called as huge Node, is this correct ?
Hi Everyone
i'm a niewbie and i was so confused about how the blocks work and Function in Bitcoin blockchain ive many questions and i want if someone here has a good knowledge in blockchain to answer my questions ?
1- is the blocks can only contains one transaction or more ?
2- we know that the miners doing calculation through POW ? is it the same calculation of the hash tx ?
3- is the block that is created by a miner doesnt valide untill it is validated by all the miners in the network ? is that correct ? and how it is considered as a valide block ?
4- is every miner considered as Node in Bitcoin Network ?
i'm a niewbie and i was so confused about how the blocks work and Function in Bitcoin blockchain ive many questions and i want if someone here has a good knowledge in blockchain to answer my questions ?
1- is the blocks can only contains one transaction or more ?
2- we know that the miners doing calculation through POW ? is it the same calculation of the hash tx ?
3- is the block that is created by a miner doesnt valide untill it is validated by all the miners in the network ? is that correct ? and how it is considered as a valide block ?
4- is every miner considered as Node in Bitcoin Network ?