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Transaction version 2 Development & Technical Discussion
Try and explain yourself clearly. Did you mean segwit version 0 and segwit versi…
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n/a | Frodek | March 30, 2024, 04:23:53 PM |
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Transaction version 2 Development & Technical Discussion
What are difference between version 1 and version 2 of transaction?
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n/a | Frodek | March 30, 2024, 03:56:41 PM |
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[ANN] Planning new crypto Announcements (Altcoins)
I am looking for people for a project new crypto. This crypto should be fully de…
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n/a | Frodek | November 13, 2020, 06:56:57 AM |
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How Bob prove his address? Bitcoin Discussion
In short:Indeed is imposible get public key from signing, is possible check sigi…
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n/a | Frodek | January 15, 2020, 12:16:15 PM |
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Merkle tree and Bitcoin block Development & Technical Discussion
Merkle tree has a big adavantage compared to simple hash list: if we have 1000 t…
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n/a | Frodek | January 15, 2020, 12:11:47 PM |
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How to proving e-mail address? Altcoin Discussion
I'm not thinking stricte about cryptocurrency but something like a forum based o…
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n/a | Frodek | January 15, 2020, 03:31:27 AM |
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How to proving e-mail address? Altcoin Discussion
I do not necessarily insist on e-mail addresses but I would like a method assign…
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n/a | Frodek | January 15, 2020, 02:59:07 AM |
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How to proving e-mail address? Altcoin Discussion
I would like the user's address to be valuable to him and he not be able to gene…
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n/a | Frodek | January 15, 2020, 01:21:44 AM |
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How to proving e-mail address? Altcoin Discussion
Sometimes we wants not so much anonymity, but valuable participation in crypto c…
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n/a | Frodek | January 15, 2020, 12:52:11 AM |
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How Bob prove his address? Bitcoin Discussion
How Bob prove that his address is associated wih his private key?In https://en.b…
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n/a | Frodek | January 15, 2020, 12:28:57 AM |
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CPU friendly hash Mining (Altcoins)
Which hash is better CPU friendly? Argon2 or hash used by Litecoin?
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n/a | Frodek | January 14, 2020, 05:20:34 PM |
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Input scripts have keys? Development & Technical Discussion
Usually (but not all) inuts script have two tables, first: 70-72 bytes, second 3…
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n/a | Frodek | October 29, 2019, 06:34:42 AM |
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I am searching real sample for CPubKey::Verify or explaining my sample Development & Technical Discussion
In block 500186 BTC:in transaction (big endian) 83951f7cb7db18e22f30f319ecbfba2a…
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n/a | Frodek | October 23, 2019, 09:03:13 AM |
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Is possible get public key from signature? Development & Technical Discussion
Main problem: there are two ways of signing: normal key1.Sign(hashMsg, sign1) an…
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n/a | Frodek | October 23, 2019, 05:37:41 AM |
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Is possible get public key from signature? Development & Technical Discussion
What I am wrong using only Bitcoin code?I move source code from key_tests.cpp :C…
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n/a | Frodek | October 18, 2019, 01:27:52 PM |
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Is possible get public key from signature? Development & Technical Discussion
Two problems:1. When I secp256k1_ecdsa_sig_parse with sample signature, len mism…
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n/a | Frodek | October 17, 2019, 10:06:36 AM |
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Is possible get public key from signature? Development & Technical Discussion
Now, let try it with example: (this exmaple is from LTC block 500186, but for Bi…
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n/a | Frodek | October 16, 2019, 11:56:07 AM |
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Is possible get public key from signature? Development & Technical Discussion
I see Bitcoin method:Quotebool CPubKey::RecoverCompact(const uint256 &hash, cons…
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n/a | Frodek | October 15, 2019, 11:38:39 AM |
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Is possible get public key from signature? Development & Technical Discussion
I can' t understand because is48
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n/a | Frodek | October 14, 2019, 11:05:17 AM |
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Is possible get public key from signature? Development & Technical Discussion
Thanks!I previously thougt that "r" and "s" is one arrayr and s are relative sma…
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n/a | Frodek | October 11, 2019, 03:43:24 PM |
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Is possible get public key from signature? Development & Technical Discussion
Transaction inputs script are usually (but coinbase) 73 bytes signature + 65 byt…
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n/a | Frodek | October 11, 2019, 09:29:24 AM |
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How decode public key from input script? Development & Technical Discussion
I see: https://learnmeabitcoin.com/guide/digital_signatures_signing_verifyingWhe…
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n/a | Frodek | October 09, 2019, 09:01:51 AM |
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How to get uncompressed public key from compressed one ? Development & Technical Discussion
We have:const prime = new bigInt('ffffffffffffffffffffffffffffffffffffffffffffff…
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n/a | Frodek | October 07, 2019, 01:02:35 PM |
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uncompressed public key <->compressed samples Development & Technical Discussion
Here is "How to get uncompressed public key from compressed one ?" - Python samp…
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n/a | Frodek | October 07, 2019, 09:59:59 AM |
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"relayed_by" addres IP Development & Technical Discussion
I think, peers are not constant and must be often called getpeerinfo
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n/a | Frodek | August 16, 2019, 07:27:05 AM |
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"relayed_by" addres IP Development & Technical Discussion
I run bitcoin with -debug=netin log I have "got inv tx=hash, new peer=1"peer = 1…
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n/a | Frodek | August 16, 2019, 07:05:27 AM |
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"relayed_by" addres IP Development & Technical Discussion
IP of previous node can be obtained only by standalnone using protocol? Or is wa…
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n/a | Frodek | August 16, 2019, 04:25:14 AM |
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"relayed_by" addres IP Development & Technical Discussion
https://api.blockcypher.com/ has field "relayed_by"How can be get this informati…
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n/a | Frodek | August 16, 2019, 02:49:40 AM |
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Transaction network form specification Development & Technical Discussion
Where is described transaction in form transmitted over network? How to find Bit…
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n/a | Frodek | August 13, 2019, 03:37:55 AM |
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[LTC][RPC] How get coinbase transaction Altcoin Discussion
For block 500000 RPC returns:Code:{ "result":{ "hash":"65858117fadcff3b59…
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n/a | Frodek | August 12, 2019, 06:12:45 AM |
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Technical changes Bitcoin core to 0.17.1 Bitcoin Technical Support
AFAIK there's no fork planned in the foreseeable future, so also here the block…
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n/a | Frodek | June 18, 2019, 07:17:09 AM |
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Technical changes Bitcoin core to 0.17.1 Bitcoin Technical Support
and 0.18.0.rc1 is the same? format not changes?https://github.com/bitcoin/bitcoi…
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n/a | Frodek | March 21, 2019, 06:01:42 AM |
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Technical changes Bitcoin core to 0.17.1 Bitcoin Technical Support
Hi, I am writing blockchain analyser, I am using infos like “Block” and “Transac…
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n/a | Frodek | March 13, 2019, 12:09:43 PM |
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Computing transaction hash Development & Technical Discussion
Where in code is computing transaction hash?CTransaction::ComputeHash()?
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n/a | Frodek | March 11, 2019, 05:17:13 AM |
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Output witness scripthash but input keyhash? Development & Technical Discussion
Ishttps://www.blockchain.com/btc/tx/49de9ea077feee38d4952023fbe9cbdbb9020675667c…
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n/a | Frodek | January 29, 2019, 05:03:26 AM |
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[bitcoinABC] In which dat is any block ? Altcoin Discussion
I am binary searching dat files and I can't find one block. But client not warn…
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n/a | Frodek | January 04, 2019, 04:45:28 PM |
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SIGHASH_NOINPUT and Lightning Network Development & Technical Discussion
1.Here is SIGHASH_NOINPUT: https://github.com/Roasbeef/bitcoin/commit/4b3c3f1baf…
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n/a | Frodek | September 13, 2018, 03:14:25 AM |
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How best copy blockchain to other computer? Development & Technical Discussion
I have desktop with Windows and 200 GB blocks on it.Now I have bought laptop wit…
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n/a | Frodek | June 23, 2018, 12:42:06 PM |
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[technical] How read prev block hash from binary Altcoin Discussion
It is ok: bd48bb791b61de487e3235820c8ae578d9d6e335ccd651e05e6059dc096a5ba4 is 17…
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n/a | Frodek | June 13, 2018, 02:41:38 PM |
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[technical] How read prev block hash from binary Altcoin Discussion
Already I know: this hashes are computed by simply Bitcoin double sha256, and I…
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n/a | Frodek | June 13, 2018, 02:34:50 PM |
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[technical] How read prev block hash from binary Altcoin Discussion
I have hex dump beginning: Records beginnings are: 0, 0x120, 0x1ff,..I read reco…
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n/a | Frodek | June 13, 2018, 01:52:10 PM |
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What are best technical books? Beginners & Help
What are good technical books about Bitcoin and Ethereum? "Mastering Bitcoin 2e"…
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n/a | Frodek | January 16, 2018, 11:41:14 AM |
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[dump][testnet]tx version and sequence_no Development & Technical Discussion
I have Block 872730:at 10006: witCount=2, varlen=1at 10007: witLen=72, varlen=1a…
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n/a | Frodek | July 29, 2017, 11:23:58 AM |
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[dump][testnet]tx version and sequence_no Development & Technical Discussion
Ok, transactions, not block may be witness..I try dump 873033 from testnet:Trans…
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n/a | Frodek | July 29, 2017, 09:35:34 AM |
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[dump][testnet]tx version and sequence_no Development & Technical Discussion
Thanks, how recognize how block has witness (bip141) or not. I want write dump f…
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n/a | Frodek | July 29, 2017, 06:21:34 AM |
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[testnet]Different wersions of block Development & Technical Discussion
On testnet I have map where appears new version:https://drive.google.com/open?id…
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n/a | Frodek | July 29, 2017, 04:17:39 AM |
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[dump][testnet]tx version and sequence_no Development & Technical Discussion
I run my dump program on testnet. Block 873032 is small and seems correct.In blo…
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n/a | Frodek | July 29, 2017, 02:57:02 AM |
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SegWit on TestNet? Bitcoin Discussion
I want tests our crawler with SegWit. I try run it on testnet. In testnet are an…
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n/a | Frodek | July 27, 2017, 10:04:42 AM |
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How to read Ethereum blocks? Altcoin Discussion
I want read data of *.ldb files from c:\Users\USER\AppData\Roaming\Ethereum\geth…
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n/a | Frodek | March 29, 2017, 12:54:10 PM |
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bitcoin-cli -decodescript "hex" - method not found Development & Technical Discussion
First after calling was error code: -28error message:Loading block index...next:…
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n/a | Frodek | March 14, 2017, 12:28:00 PM |
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How to use script interpreter? Development & Technical Discussion
OK - SCRIPT_VERIFY_P2SHbut when I interpret script OP_DUP OP_HASH160 N/A_20 [20…
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n/a | Frodek | March 14, 2017, 06:57:06 AM |
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How to use script interpreter? Development & Technical Discussion
I have extracted file interpreter.cpp from Bitcoin sources with dependencies.I c…
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n/a | Frodek | March 14, 2017, 06:26:02 AM |
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Where are bodies of functions of secp256k1.h ? Development & Technical Discussion
Previously I can't find, because I search only *.cpp and *.h, not *.c. Thanks
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n/a | Frodek | March 03, 2017, 12:12:56 PM |
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Where are bodies of functions of secp256k1.h ? Development & Technical Discussion
I have extracted interpreter.cpp and depending source files from Bitcoin source.…
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n/a | Frodek | March 03, 2017, 11:47:08 AM |
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Multisig without OP_CHECKMULTISIG? Bitcoin Discussion
Old transaction which has OP_CHECKMULTISIG: https://blockchain.info/tx/6e2c5b6b2…
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n/a | Frodek | February 03, 2017, 01:13:51 PM |
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For what are input scripts? Bitcoin Discussion
But inputs records contains hash of previous transaction. Input script are diffi…
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n/a | Frodek | February 03, 2017, 12:05:15 PM |
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For what are input scripts? Bitcoin Discussion
Inputs script are usually bigger than output scripts. Only take place in blocks.
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n/a | Frodek | February 03, 2017, 11:20:42 AM |
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How to use Dash testnet? Altcoin Discussion
At start I have several connection but after while is zero. My testnet client is…
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n/a | Frodek | January 27, 2017, 03:41:57 PM |
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How to use Dash testnet? Altcoin Discussion
instead of Dash mainnet? What I must write to dash.conf ? But dash.conf is in di…
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n/a | Frodek | January 27, 2017, 02:20:25 PM |
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Files revNNNN.dat Bitcoin Technical Support
I am read and analyze blkNNNNN.dat files but the are old:Bitcoin-qt is downloadi…
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n/a | Frodek | January 21, 2017, 08:14:55 AM |
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How to get sending address of Multisig/Escrow transaction? Development & Technical Discussion
For example:https://blockexplorer.com/tx/70c15eb4cc3890960dbe1ae0cf13eedaeaef04d…
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n/a | Frodek | January 13, 2017, 09:02:57 AM |
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When resolve keys to addresses started with "1" or started with "3"? Development & Technical Discussion
But is several nonstandard script format, for example: https://blockchain.info/t…
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n/a | Frodek | January 12, 2017, 01:30:31 PM |
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When resolve keys to addresses started with "1" or started with "3"? Development & Technical Discussion
If after key data is OP_CHECKSIG then "digital signature must be provided that m…
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n/a | Frodek | January 12, 2017, 01:09:49 PM |
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When resolve keys to addresses started with "1" or started with "3"? Development & Technical Discussion
I have transaction: https://blockchain.info/en/tx/eb3ee64977be2b62a8686149dceba2…
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n/a | Frodek | January 12, 2017, 12:44:14 PM |
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How parse multisig transactions? Development & Technical Discussion
It is important information that addresses are:"4QiogzmMMeatiJE7QCvzz7Rf86euJC6N…
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n/a | Frodek | January 11, 2017, 07:01:54 AM |
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How parse multisig transactions? Development & Technical Discussion
Is transaction in block 387773 : https://blockchain.info/tx/67fd12e0965a36af7013…
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n/a | Frodek | January 11, 2017, 06:37:07 AM |
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How compute transaction fee? Development & Technical Discussion
I must analyze whole blockchain and hundred of millions addresses?
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n/a | Frodek | June 10, 2016, 12:06:35 PM |
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How compute transaction fee? Development & Technical Discussion
We have sample transaction: https://blockchain.info/tx/fa67048a1d19de38779d9a784…
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n/a | Frodek | June 10, 2016, 10:52:51 AM |
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ONECOIN- NOWA KRYPTOWALUTA Alternatywne kryptowaluty
OneCoin to zwykła piramida finansowa, porównywanie tego do Bitcoina jest śmieszn…
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n/a | Frodek | May 31, 2016, 11:34:31 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
But in this case we don't have 65 byte key (nor 33 byte key) but only push 72-73…
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n/a | Frodek | May 11, 2016, 10:53:39 PM |
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Version 2 of transaction Development & Technical Discussion
In block 209920 is one transaction, its version=2. What changes of format?
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n/a | Frodek | May 11, 2016, 10:51:10 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
1. How to fast find address in this case?The same speed that it takes to find an…
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n/a | Frodek | May 11, 2016, 10:54:42 AM |
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[solved]How decode raw transaction? Development & Technical Discussion
In block 200'000 I notice two strange transactions.Usually input script is signa…
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n/a | Frodek | May 09, 2016, 02:04:35 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
In block 200'000 I notice two strange transactions.Usually input script is signa…
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n/a | Frodek | May 07, 2016, 11:33:36 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
"Then 65 bytes are pushed. This pushes the pubkey of the address this output is…
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n/a | Frodek | May 07, 2016, 03:13:37 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
This explain a bit. How locate useful data? The block data before OP_CHECKSIG?
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n/a | Frodek | May 07, 2016, 01:31:17 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
My example: First transaction of block 200'000:bitcoin-cli getrawtransaction dba…
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n/a | Frodek | May 07, 2016, 12:58:14 PM |
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What is binary format blk00NNN.dat files Bitcoin Technical Support
I can not understand how to obtain multiple leading zeros in hash, while nonce i…
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n/a | Frodek | May 07, 2016, 12:04:22 AM |
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What is binary format blk00NNN.dat files Bitcoin Technical Support
Maybe is possible to avoid reading indices?I first read headers of all block, ne…
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n/a | Frodek | May 06, 2016, 11:15:01 PM |
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What is binary format blk00NNN.dat files Bitcoin Technical Support
Is where description of indices files? I must maybe use https://github.com/googl…
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n/a | Frodek | May 06, 2016, 03:12:30 PM |
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What is binary format blk00NNN.dat files Bitcoin Technical Support
If I must read specific block for example 200000, in which file and which posit…
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n/a | Frodek | May 06, 2016, 02:36:31 PM |
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What is binary format blk00NNN.dat files Bitcoin Technical Support
Blocks are described here : https://en.bitcoin.it/wiki/BlockThere are chains of…
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n/a | Frodek | May 06, 2016, 01:43:33 PM |
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[solved]How decode raw transaction? Development & Technical Discussion
1. input script pushes, output duplicates and compare; but if we have may inputs…
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n/a | Frodek | May 04, 2016, 02:02:28 AM |
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[solved]How decode raw transaction? Development & Technical Discussion
Thanks, this explain a lot.1.OP_DUP duplicate top of stack? At start output, mus…
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n/a | Frodek | May 03, 2016, 05:39:31 PM |
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How decode raw transaction? Development & Technical Discussion
But topic is not solved:I don't know how read addresses from script.block hash:…
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n/a | Frodek | May 03, 2016, 11:38:59 AM |
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[solved]How decode raw transaction? Development & Technical Discussion
One solution is RPC method decoderawtransaction. But is is possible decode by my…
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n/a | Frodek | May 03, 2016, 01:08:16 AM |
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Incremental backup of blockchain Bitcoin Discussion
To speedup restoring. When delete my blocks from my hard disk and after time I w…
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n/a | Frodek | May 03, 2016, 01:06:17 AM |
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Incremental backup of blockchain Bitcoin Discussion
I want make backup of blockchain on BluRay discs; packed by 7zip to 66%.First ba…
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n/a | Frodek | May 03, 2016, 12:41:02 AM |
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bitcoind daemon start fails Bitcoin Technical Support
Afer restart Linux is OK, hot to stop daemon? "service bitcoind stop" and "/etc/…
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n/a | Frodek | May 02, 2016, 06:20:58 AM |
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bitcoind daemon start fails Bitcoin Technical Support
I write: bitcoind -daemonMy log: Quote2016-05-02 10:52:01 Bitcoin version v0.12.…
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n/a | Frodek | May 02, 2016, 06:03:23 AM |
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[RPC] server.version not supported Electrum
Command "version" is OK
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n/a | Frodek | May 02, 2016, 06:00:41 AM |
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[RPC] server.version not supported Electrum
electrum setconfig rpcport 7777electrum daemon startcurl --data-binary '{ "id":…
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n/a | Frodek | May 02, 2016, 02:09:29 AM |
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How to use JSON-RPC in C++ in Linux? Electrum
I want write program which use Electrum to get transactions (also pending) from…
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n/a | Frodek | May 01, 2016, 03:44:01 AM |
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Lightweight client for PHP Bitcoin Technical Support
How serve Bitcoin payments in PHP? One solution is Bitcoind but this required gi…
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n/a | Frodek | April 17, 2016, 02:46:29 PM |
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Lisk already trading at yobit Altcoin Discussion
I wait for correction of price. 0.004 no longer keeps.
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n/a | Frodek | April 06, 2016, 01:48:27 PM |
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Why sha256(sha256()) ? Development & Technical Discussion
Twice Sha256 is to prevent length-extension attacks. If in theory, instead SHA-2…
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n/a | Frodek | November 22, 2015, 02:27:52 AM |
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Why sha256(sha256()) ? Development & Technical Discussion
In Bitcoin Developer Reference https://bitcoin.org/en/developer-reference is in…
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n/a | Frodek | November 21, 2015, 03:13:57 PM |
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What is Bitcoin block time ditribution? Bitcoin Discussion
Here are times of last generated blocks:383646 2015-11-15 09:21:46 7.05383645 20…
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n/a | Frodek | November 15, 2015, 05:19:21 AM |
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What is Bitcoin block time ditribution? Bitcoin Discussion
Aha, this explains why time is not greater.But what is variance?two problems: a)…
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n/a | Frodek | November 15, 2015, 05:42:30 AM |
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How much operations take SHA-2 ? Development & Technical Discussion
Where can I find source of SHA implementation on CPU?
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n/a | Frodek | July 22, 2014, 02:46:51 AM |
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