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Showing 14 of 14 results by ad19900913
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Board Announcements (Altcoins)
[ANN] WoofCoin / New Coin [WOFC] GPU Mining/PoW
by
ad19900913
on 16/01/2023, 22:09:35 UTC


WOOF COIN

Since the beginning of the pandemic, pet surrendering rates have increased dramatically around the world. Waitlists for surrendering household pets have increased to a remarkable eight months as animal shelters and welfare organisations have seen an increase of 34% for animals needing help.

Typically, animal shelters are under resourced and under financed; relying heavily on donations and the volunteer efforts to assist animals.

This is where Woof Coin steps in. As avid lovers of dogs, we wanted to make a difference. Using the power of Proof of Work mining, we’ve created a coin where miners are contributing to the donation of money to animal welfare shelters. These shelters initially include the ASPCA who already have a cryptocurrency donation mechanism but with intention to expand to the RSPCA and other organizations suggested by the community. 

Our aim is to put animals first and we intend on developing ongoing relationships with pet shelters to help adoption.

Coins Specifications
21 billion supply
Block 2,100,000 halving (4 years estimated)
Algorithm: KawPOW
Proof of Work

Download Links:
https://github.com/WOOFCoincore/Woof-coin/releases/download/Woof-coin/WoofCoin.zip

Social
Coming soon!


Please reach out if you have any questions  Smiley
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Topic
Board Development & Technical Discussion
how to compile libsecp256k1 and generate a *.dll file for windows
by
ad19900913
on 07/08/2019, 06:52:40 UTC
hi everyone
As the title suggests, i want to know how to compile libsecp256k1 and generate a *.dll file for windows.
i already search the issues but not found valuable information.
i'm not familiar with c/c++,so i hope there is a step by step sample.
the project's github address-https://github.com/bitcoin-core/secp256k1
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Topic
Board Development & Technical Discussion
Re: Possibility of a DDoS attack
by
ad19900913
on 22/07/2019, 05:25:01 UTC
I think the second one may have a greater impact on the BTC network
Most governments are currently ambivalent about cryptcurrency
Distributed system sounds a little scary Tongue
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Topic
Board Development & Technical Discussion
Re: Possibility of a DDoS attack
by
ad19900913
on 18/07/2019, 06:40:27 UTC
More importantly, no one benefits from this kind of attack, and the attacker does not gain additional BTC.In theory, the node will return to normal as soon as the attack stops.
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Topic
Board Service Discussion
Re: All bitcoin addresses with Huobi
by
ad19900913
on 18/07/2019, 06:28:33 UTC
In a sense, hbg's hot addresses are their trade secret Roll Eyes
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Topic
Board Development & Technical Discussion
Re: All bitcoin addresses with Huobi
by
ad19900913
on 12/07/2019, 09:45:23 UTC
You can't do that.The transaction on the hbg is a black box for external observers. When transferring the same currency on the hbg, the transaction will not be recorded on the orignal blockchain. They just record the transfer internally, which can save a fee.
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Topic
Board Development & Technical Discussion
Re: Bitcoin testnet coins
by
ad19900913
on 27/06/2019, 02:02:50 UTC
i need some test coin for dev , my address is "2N3KryJFGPHnSUfdV64G4yz4yDiM6koyrQ7", thanks Cheesy Cheesy

Sent!  LMK if you need anymore if and if finished testing; feel free to send back to originating address

sure, thanks for your coin, i'll send back to u when i finish test
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Topic
Board Development & Technical Discussion
Re: Bitcoin testnet coins
by
ad19900913
on 26/06/2019, 02:06:53 UTC
Don't forget that there's also a couple of testnet faucets around:

https://en.bitcoin.it/wiki/Testnet#Faucets

Unless you need huge amounts of testnet coins for whatever reasons those faucets serve fairly well.

ok, thanks for your tips Grin
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Board Development & Technical Discussion
Re: Bitcoin testnet coins
by
ad19900913
on 24/06/2019, 01:41:16 UTC
i need some test coin for dev , my address is "2N3KryJFGPHnSUfdV64G4yz4yDiM6koyrQ7", thanks Cheesy Cheesy
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Topic
Board Development & Technical Discussion
Merits 1 from 1 user
Re: help! about multisig address spending using bitcoind
by
ad19900913
on 14/06/2019, 03:31:04 UTC
⭐ Merited by DarkStar_ (1)
Ignore above messages,It was my own fault Cry Cry Cry

Please share what your problem was if you can, so that others who find this thread can learn from your mistakes.

First of all, I will explain why the call of bitcoind failed. I used Java to call the bitcoind interface through the jsonrpc. I forgot to pass the hex parameter in my Java code, so I get an error.
As far as I use https://live.blockcypher.com/btc-testnet/pushtx/ broadcast tx error, I guess is due to the site deployment bitcoind version number is not the same with me, just a guess.
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Board Development & Technical Discussion
Re: help! about multisig address spending using bitcoind
by
ad19900913
on 12/06/2019, 11:43:58 UTC
Ignore above messages,It was my own fault Cry Cry Cry
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Topic
Board Development & Technical Discussion
Re: help! about multisig address spending using bitcoind
by
ad19900913
on 12/06/2019, 10:35:54 UTC

This gave the following output:
Quote
{
  "hex": "0200000001b6be4571434809a4590ce1cc0bd41d1c9bd2d20414df9c7b246b73d8b1b651a900000 000fc00473044022040553dd608c655c94c5b1b7699a018256ce9439f909f4cc8ecef78dd453b3d 0502204a58ce1bfdf694f1626d57b34bf2d16cab24d3678096c4624bc0b6cbed32c5f9014730440 22032d6775ce11878d3c155516b53026f360168fc40015f0d116726041b9e25583302200e3d6fe3 f73105c0d072736d15154b108c2249ae260931ab04f31e7b1e9799e4014c69522102ccbf87a4c99 e092e1d2bcc838b7fe051bc19b2d83931ea163452fe795720e24821036ece86305c5604739805ec 23926d902ceab41b6eb1d497c1d8160297072a38ed210353be0e12b29e46f73fd06a9be455dd221 b1effdbee287a9ea3827baf16f556a853aefdffffff019e959800000000001976a9142bd2a8a129 cc97f18bd9c9820910a5d178b6259688ac00000000",
  "complete": true
}


which then failed to send because my fee was too small!!?! Tongue Roll Eyes
Quote
min relay fee not met, 226 < 337 (code 66) (code -26)

After fixing the fee, it all worked fine Wink
TXID: fc6360591fb5047955c5a974f8b2e5003bcac43f335119b250ce7344c9d901bf

hi, i'm back.  after adding prevtxs param, i get the completed sign tx via "signrawtransactionwithkey", but error again when call "sendrawtransaction".
follow is my completed sign tx hex:
020000000001019baa0621b3de1475355030b1c4f7c449f64245e9284dfeb846811678c0c0c1fd0 000000023220020b597112b420744d201cda12de7e3dd1e2a9e8fe74aaa5f48855a5fd0c472367e ffffffff01c42c0f000000000017a9146e91cb258b70de4ad91103074fdff4a66dcbc7668704004 73044022034b2c70c59e7dbc826c62a5c5bccea12d19ca15d7e6be25a512df767dbae33ed022037 c1e536f0ed0047481b6493ab1143e41e729af663457eaf63b686a8f20ed65101473044022058a39 328c60f164057e892f529ceaaa342b3da27d62c42b12980bde055724b8502200dd69b5f8c1c4e01 627cec07a48234aa163e29c33aa93df906ced56e713857ba0169522102d1a204a305d9f0699b488 392399ca4ea4e4d85dcf1b8eed674a1dc6142b28a6921036a0d274d58ad3b4a079b5cc12512c5c9 7e568810a10a522d2005334223faabe7210261b4c029f1dd2fbabd879b5816cd88f1b81e0defff1 9fe23410c763d997f72b253ae00000000
i use bitcoind to call "sendrawtransaction" and failed with error code -1.
i use "https://live.blockcypher.com/btc-testnet/pushtx/" to broadcast the hex and get error msg "Error sending transaction: Error running script for input 0 referencing fdc1c0c078168146b8fe4d28e94542f649c4f7c4b13050357514deb32106aa9b at 0: witness program does not match script hash."
but when i use bitcoin-qt's console , i broadcast it successfully, just this https://live.blockcypher.com/btc-testnet/tx/15ecd63048594e0075c99dada881fce9ec9185deae243ee3e608e9ce566e4147/
 Huh Huh
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Topic
Board Development & Technical Discussion
Re: help! about multisig address spending using bitcoind
by
ad19900913
on 11/06/2019, 11:42:25 UTC
I believe signRawTransactionWithKey requires that you provide ALL the keys at the same time.

as per the documentation:
Quote from: signRawTransactionWithKey
signrawtransactionwithkey "hexstring" ["privatekey",...] ( [{"txid":"hex","vout":n,"scriptPubKey":"hex","redeemScript":"hex","witnessScript":"hex","amount":amount},...] "sighashtype" )

Sign inputs for raw transaction (serialized, hex-encoded).
The second argument is an array of base58-encoded private
keys that will be the only keys used to sign the transaction.
The third optional argument (may be null) is an array of previous transaction outputs that
this transaction depends on but may not yet be in the block chain.
...

I think what you're looking for (with regards to MultiSig) is the relatively new "PSBT" (Partially Signed Bitcoin Transaction) functionality... Refer here: https://github.com/bitcoin/bitcoin/blob/master/doc/psbt.md

thanks for your help!
i googled how to spending a multisig address's btc, and all of them said use "signRawTransaction"(Multiple calls "signRawTransaction" with different private keys,the last call will return {complete:true} ), but in the newest rpc specification(0.18.0),"signRawTransaction" has been removed.so u mean when using rpc 0.18.0,i can not use "signRawTransactionWithKey" like using "signRawTransaction" in specification 0.17.0?
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Topic
Board Development & Technical Discussion
Merits 1 from 1 user
help! about multisig address spending using bitcoind
by
ad19900913
on 11/06/2019, 09:45:00 UTC
⭐ Merited by ETFbitcoin (1)
i create a 2 of 3 multisig address "2Mu9jnQ7ZY8hB3DewFtJEoUbtNFfbXiUgn4" in testnet3, and then send some btc to it.
but when i try to spending its btc, i get error.
follow's my step:
1.create a rawtransaction using 2Mu9jnQ7ZY8hB3DewFtJEoUbtNFfbXiUgn4's utxo, i call "CreateRawTransaction" and get the hex "02000000013c252c725e901bc8cbe1ef8f81708e0f0201542f4876bc11409f67d8b3e846c800000 00000ffffffff01d02a0f000000000017a9146e91cb258b70de4ad91103074fdff4a66dcbc76687 00000000"
2.call "signRawTransactionWithKey" with params {"02000000013c252c725e901bc8cbe1ef8f81708e0f0201542f4876bc11409f67d8b3e846c800000 00000ffffffff01d02a0f000000000017a9146e91cb258b70de4ad91103074fdff4a66dcbc76687 00000000", "cRPejJLohjgiBkqG3X9mpxmwfn9UwE5A4BifLGESTaKEcJFwz4wG"}
and i get error:
[{txid=c846e8b3d8679f4011bc76482f5401020f8e70818fefe1cbc81b905e722c253c, vout=0, witness=[], scriptSig=, sequence=4294967295, error=Unable to sign input, invalid stack size (possibly missing key)}]

anyone know why this happen?