Sounds like you need to adapt to that API yourself. I fear bitcoinj and the "blockcypher API" may not be a good fit, but try it yourself.
On 08/31/2017 09:39 AM, Alex Yang wrote: > Such as the blockcypher API which is allows the users to create both > bitcoin/ethereum wallets with a token. > With that token, we can also manipulate the wallets such as make > transactions etc. > > The problem with bitcoinj is that we have to create and maintain a > blockchain node? > > 在 2017年8月30日星期三 UTC+8下午4:16:38，Andreas Schildbach写道： > > What do you mean by 3rd party API? What does that API do? Bitcoinj is > designed to use the Bitcoin P2P protocol. > > > On 08/30/2017 04:12 AM, Alex Yang wrote: > > What I need is to create the wallet and just call 3rd party APIs > to make > > the transactions. > > > > In this case, Do we need to set up a bitcoin node or we can just use > > bitcoinj to create a wallet and then use 3rd party APIs(The APIs will > > handle the sync etc.)? > > > > 在 2017年8月28日星期一 UTC+8下午11:00:25，Andreas Schildbach写道： > > > > You will need at least one node to sync from, typically > Bitcoin Core or > > some fork of it. PeerGroup automatically discovers peers and > > connects to > > a number of them. > > > > > > On 08/28/2017 10:57 AM, Alex Yang wrote: > > > Thanks Andreas! Do we need to install and run bitcoin-core > or we just > > > need to set up the checkpointing? > > > > > > 在 2017年8月28日星期一 UTC+8下午2:38:51，Andreas Schildbach > 写道： > > > > > > See this document on how set up checkpointing: > > > > > > https://bitcoinj.github.io/speeding-up-chain-sync > <https://bitcoinj.github.io/speeding-up-chain-sync> > > <https://bitcoinj.github.io/speeding-up-chain-sync > <https://bitcoinj.github.io/speeding-up-chain-sync>> > > > <https://bitcoinj.github.io/speeding-up-chain-sync > <https://bitcoinj.github.io/speeding-up-chain-sync> > > <https://bitcoinj.github.io/speeding-up-chain-sync > <https://bitcoinj.github.io/speeding-up-chain-sync>>> > > > > > > > > > On 08/27/2017 07:22 PM, Alex Yang wrote: > > > > I need to use BitcoinJ to create and host wallet on my > own > > website. > > > > However, it keeps downloading blocks and the sync > seems taking > > > forever. > > > > I need to be able to create a wallet within a few > seconds. > > > > > > > > Could anyone please advice what should i do to > optimize the > > sync > > > time? > > > > > > > > |ECKey key = new ECKey(); Address addressFromKey = > > > key.toAddress(params); > > > > Wallet wallet = new Wallet(params); > wallet.importKey(key); File > > > > blockFile = new File(“/tmp/bitcoinblocks”); BlockStore > > blockStore > > > = new > > > > MemoryBlockStore(params); BlockChain chain = new > > > > BlockChain(params,blockStore); PeerGroup peerGroup = new > > > > PeerGroup(params, chain); peerGroup.addPeerDiscovery(new > > > > DnsDiscovery(params)); peerGroup.addWallet(wallet); > > > peerGroup.start(); > > > > peerGroup.downloadedBlockChain(); | > > > > > > > > -- > > > > You received this message because you are subscribed > to the > > Google > > > > Groups "bitcoinj" group. > > > > To unsubscribe from this group and stop receiving emails > > from it, > > > send > > > > an email to bitcoinj+u...@googlegroups.com > > > > <mailto:bitcoinj+u...@googlegroups.com>. > > > > For more options, visit > https://groups.google.com/d/optout <https://groups.google.com/d/optout> > > <https://groups.google.com/d/optout > <https://groups.google.com/d/optout>> > > > <https://groups.google.com/d/optout > <https://groups.google.com/d/optout> > > <https://groups.google.com/d/optout > <https://groups.google.com/d/optout>>>. > > > > > > > > > -- > > > You received this message because you are subscribed to the > Google > > > Groups "bitcoinj" group. > > > To unsubscribe from this group and stop receiving emails > from it, > > send > > > an email to bitcoinj+u...@googlegroups.com > > > <mailto:bitcoinj+u...@googlegroups.com>. > > > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout> > > <https://groups.google.com/d/optout > <https://groups.google.com/d/optout>>. > > > > > > -- > > You received this message because you are subscribed to the Google > > Groups "bitcoinj" group. > > To unsubscribe from this group and stop receiving emails from it, > send > > an email to bitcoinj+u...@googlegroups.com > > <mailto:bitcoinj+u...@googlegroups.com>. > > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to the Google > Groups "bitcoinj" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to bitcoinj+unsubscr...@googlegroups.com > <mailto:bitcoinj+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "bitcoinj" group. To unsubscribe from this group and stop receiving emails from it, send an email to bitcoinj+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
