org.bitcoinj.core.Block.getPrevBlockHash()方法的使用及代码示例
本文整理了Java中org.bitcoinj.core.Block.getPrevBlockHash()方法的一些代码示例，展示了Block.getPrevBlockHash()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Block.getPrevBlockHash()方法的具体详情如下：
包路径：org.bitcoinj.core.Block
类名称：Block
方法名：getPrevBlockHash
Block.getPrevBlockHash介绍
[英]Returns the hash of the previous block in the chain, as defined by the block header.
[中]返回链中上一个块的哈希值，由块头定义。
代码示例
代码示例来源：origin: greenaddress/GreenBits
/**
* An orphan block is one that does not connect to the chain anywhere (ie we can't find its parent, therefore
* it's an orphan). Typically this occurs when we are downloading the chain and didn't reach the head yet, and/or
* if a block is solved whilst we are downloading. It's possible that we see a small amount of orphan blocks which
* chain together, this method tries walking backwards through the known orphan blocks to find the bottom-most.
*
* @return from or one of froms parents, or null if "from" does not identify an orphan block
*/
@Nullable
public Block getOrphanRoot(Sha256Hash from) {
lock.lock();
try {
OrphanBlock cursor = orphanBlocks.get(from);
if (cursor == null)
return null;
OrphanBlock tmp;
while ((tmp = orphanBlocks.get(cursor.block.getPrevBlockHash())) != null) {
cursor = tmp;
}
return cursor.block;
} finally {
lock.unlock();
}
}代码示例来源：origin: fr.acinq/bitcoinj-core
/**
* An orphan block is one that does not connect to the chain anywhere (ie we can't find its parent, therefore
* it's an orphan). Typically this occurs when we are downloading the chain and didn't reach the head yet, and/or
* if a block is solved whilst we are downloading. It's possible that we see a small amount of orphan blocks which
* chain together, this method tries walking backwards through the known orphan blocks to find the bottom-most.
*
* @return from or one of froms parents, or null if "from" does not identify an orphan block
*/
@Nullable
public Block getOrphanRoot(Sha256Hash from) {
lock.lock();
try {
OrphanBlock cursor = orphanBlocks.get(from);
if (cursor == null)
return null;
OrphanBlock tmp;
while ((tmp = orphanBlocks.get(cursor.block.getPrevBlockHash())) != null) {
cursor = tmp;
}
return cursor.block;
} finally {
lock.unlock();
}
}代码示例来源：origin: cash.bitcoinj/bitcoinj-core
/**
* An orphan block is one that does not connect to the chain anywhere (ie we can't find its parent, therefore
* it's an orphan). Typically this occurs when we are downloading the chain and didn't reach the head yet, and/or
* if a block is solved whilst we are downloading. It's possible that we see a small amount of orphan blocks which
* chain together, this method tries walking backwards through the known orphan blocks to find the bottom-most.
*
* @return from or one of froms parents, or null if "from" does not identify an orphan block
*/
@Nullable
public Block getOrphanRoot(Sha256Hash from) {
lock.lock();
try {
OrphanBlock cursor = orphanBlocks.get(from);
if (cursor == null)
return null;
OrphanBlock tmp;
while ((tmp = orphanBlocks.get(cursor.block.getPrevBlockHash())) != null) {
cursor = tmp;
}
return cursor.block;
} finally {
lock.unlock();
}
}代码示例来源：origin: HashEngineering/dashj
/**
* An orphan block is one that does not connect to the chain anywhere (ie we can't find its parent, therefore
* it's an orphan). Typically this occurs when we are downloading the chain and didn't reach the head yet, and/or
* if a block is solved whilst we are downloading. It's possible that we see a small amount of orphan blocks which
* chain together, this method tries walking backwards through the known orphan blocks to find the bottom-most.
*
* @return from or one of froms parents, or null if "from" does not identify an orphan block
*/
@Nullable
public Block getOrphanRoot(Sha256Hash from) {
lock.lock();
try {
OrphanBlock cursor = orphanBlocks.get(from);
if (cursor == null)
return null;
OrphanBlock tmp;
while ((tmp = orphanBlocks.get(cursor.block.getPrevBlockHash())) != null) {
cursor = tmp;
}
return cursor.block;
} finally {
lock.unlock();
}
}代码示例来源：origin: greenaddress/GreenBits
/**
* Given a block store, looks up the previous block in this chain. Convenience method for doing
* <tt>store.get(this.getHeader().getPrevBlockHash())</tt>.
*
* @return the previous block in the chain or null if it was not found in the store.
*/
public StoredBlock getPrev(BlockStore store) throws BlockStoreException {
return store.get(getHeader().getPrevBlockHash());
}代码示例来源：origin: fr.acinq/bitcoinj-core
/**
* Given a block store, looks up the previous block in this chain. Convenience method for doing
* <tt>store.get(this.getHeader().getPrevBlockHash())</tt>.
*
* @return the previous block in the chain or null if it was not found in the store.
*/
public StoredBlock getPrev(BlockStore store) throws BlockStoreException {
return store.get(getHeader().getPrevBlockHash());
}代码示例来源：origin: cash.bitcoinj/bitcoinj-core
/**
* Given a block store, looks up the previous block in this chain. Convenience method for doing
* <tt>store.get(this.getHeader().getPrevBlockHash())</tt>.
*
* @return the previous block in the chain or null if it was not found in the store.
*/
public StoredBlock getPrev(BlockStore store) throws BlockStoreException {
return store.get(getHeader().getPrevBlockHash());
}代码示例来源：origin: HashEngineering/dashj
/**
* Given a block store, looks up the previous block in this chain. Convenience method for doing
* <tt>store.get(this.getHeader().getPrevBlockHash())</tt>.
*
* @return the previous block in the chain or null if it was not found in the store.
*/
public StoredBlock getPrev(BlockStore store) throws BlockStoreException {
return store.get(getHeader().getPrevBlockHash());
}代码示例来源：origin: greenaddress/GreenBits
/**
* Returns a multi-line string containing a description of the contents of
* the block. Use for debugging purposes only.
*/
@Override
public String toString() {
StringBuilder s = new StringBuilder();
s.append(" block: \n");
s.append(" hash: ").append(getHashAsString()).append('\n');
s.append(" version: ").append(version);
String bips = Joiner.on(", ").skipNulls().join(isBIP34() ? "BIP34" : null, isBIP66() ? "BIP66" : null,
isBIP65() ? "BIP65" : null);
if (!bips.isEmpty())
s.append(" (").append(bips).append(')');
s.append('\n');
s.append(" previous block: ").append(getPrevBlockHash()).append("\n");
s.append(" merkle root: ").append(getMerkleRoot()).append("\n");
s.append(" time: ").append(time).append(" (").append(Utils.dateTimeFormat(time * 1000)).append(")\n");
s.append(" difficulty target (nBits): ").append(difficultyTarget).append("\n");
s.append(" nonce: ").append(nonce).append("\n");
if (transactions != null && transactions.size() > 0) {
s.append(" with ").append(transactions.size()).append(" transaction(s):\n");
for (Transaction tx : transactions) {
s.append(tx);
}
}
return s.toString();
}代码示例来源：origin: cash.bitcoinj/bitcoinj-core
/**
* Returns a multi-line string containing a description of the contents of
* the block. Use for debugging purposes only.
*/
@Override
public String toString() {
StringBuilder s = new StringBuilder();
s.append(" block: \n");
s.append(" hash: ").append(getHashAsString()).append('\n');
s.append(" version: ").append(version);
String bips = Joiner.on(", ").skipNulls().join(isBIP34() ? "BIP34" : null, isBIP66() ? "BIP66" : null,
isBIP65() ? "BIP65" : null);
if (!bips.isEmpty())
s.append(" (").append(bips).append(')');
s.append('\n');
s.append(" previous block: ").append(getPrevBlockHash()).append("\n");
s.append(" merkle root: ").append(getMerkleRoot()).append("\n");
s.append(" time: ").append(time).append(" (").append(Utils.dateTimeFormat(time * 1000)).append(")\n");
s.append(" difficulty target (nBits): ").append(difficultyTarget).append("\n");
s.append(" nonce: ").append(nonce).append("\n");
if (transactions != null && transactions.size() > 0) {
s.append(" with ").append(transactions.size()).append(" transaction(s):\n");
for (Transaction tx : transactions) {
s.append(tx);
}
}
return s.toString();
}代码示例来源：origin: fr.acinq/bitcoinj-core
/**
* Returns a multi-line string containing a description of the contents of
* the block. Use for debugging purposes only.
*/
@Override
public String toString() {
StringBuilder s = new StringBuilder();
s.append(" block: \n");
s.append(" hash: ").append(getHashAsString()).append('\n');
s.append(" version: ").append(version);
String bips = Joiner.on(", ").skipNulls().join(isBIP34() ? "BIP34" : null, isBIP66() ? "BIP66" : null,
isBIP65() ? "BIP65" : null);
if (!bips.isEmpty())
s.append(" (").append(bips).append(')');
s.append('\n');
s.append(" previous block: ").append(getPrevBlockHash()).append("\n");
s.append(" merkle root: ").append(getMerkleRoot()).append("\n");
s.append(" time: ").append(time).append(" (").append(Utils.dateTimeFormat(time * 1000)).append(")\n");
s.append(" difficulty target (nBits): ").append(difficultyTarget).append("\n");
s.append(" nonce: ").append(nonce).append("\n");
if (transactions != null && transactions.size() > 0) {
s.append(" with ").append(transactions.size()).append(" transaction(s):\n");
for (Transaction tx : transactions) {
s.append(tx);
}
}
return s.toString();
}代码示例来源：origin: HashEngineering/dashj
/**
* Returns a multi-line string containing a description of the contents of
* the block. Use for debugging purposes only.
*/
@Override
public String toString() {
StringBuilder s = new StringBuilder();
s.append(" block: \n");
s.append(" hash: ").append(getHashAsString()).append('\n');
s.append(" version: ").append(version);
String bips = Joiner.on(", ").skipNulls().join(isBIP34() ? "BIP34" : null, isBIP66() ? "BIP66" : null,
isBIP65() ? "BIP65" : null);
if (!bips.isEmpty())
s.append(" (").append(bips).append(')');
s.append('\n');
s.append(" previous block: ").append(getPrevBlockHash()).append("\n");
s.append(" merkle root: ").append(getMerkleRoot()).append("\n");
s.append(" time: ").append(time).append(" (").append(Utils.dateTimeFormat(time * 1000)).append(")\n");
s.append(" difficulty target (nBits): ").append(difficultyTarget).append("\n");
s.append(" nonce: ").append(nonce).append("\n");
if (transactions != null && transactions.size() > 0) {
s.append(" with ").append(transactions.size()).append(" transaction(s):\n");
for (Transaction tx : transactions) {
s.append(tx);
}
}
return s.toString();
}代码示例来源：origin: HashEngineering/dashj
OrphanBlock orphanBlock = iter.next();
StoredBlock prev = getStoredBlockInCurrentScope(orphanBlock.block.getPrevBlockHash());
if (prev == null) {代码示例来源：origin: greenaddress/GreenBits
OrphanBlock orphanBlock = iter.next();
StoredBlock prev = getStoredBlockInCurrentScope(orphanBlock.block.getPrevBlockHash());
if (prev == null) {代码示例来源：origin: cash.bitcoinj/bitcoinj-core
OrphanBlock orphanBlock = iter.next();
StoredBlock prev = getStoredBlockInCurrentScope(orphanBlock.block.getPrevBlockHash());
if (prev == null) {代码示例来源：origin: fr.acinq/bitcoinj-core
OrphanBlock orphanBlock = iter.next();
StoredBlock prev = getStoredBlockInCurrentScope(orphanBlock.block.getPrevBlockHash());
if (prev == null) {代码示例来源：origin: HashEngineering/dashj
"Difficulty transition point but we did not find a way back to the genesis block.");
cursor = blockStore.get(cursor.getHeader().getPrevBlockHash());代码示例来源：origin: greenaddress/GreenBits
"Difficulty transition point but we did not find a way back to the last transition point. Not found: " + hash);
hash = cursor.getHeader().getPrevBlockHash();代码示例来源：origin: fr.acinq/bitcoinj-core
"Difficulty transition point but we did not find a way back to the last transition point. Not found: " + hash);
hash = cursor.getHeader().getPrevBlockHash();代码示例来源：origin: greenaddress/GreenBits
public BlockAndValidity(NewBlock block, boolean connects, boolean throwsException, Sha256Hash hashChainTipAfterBlock, int heightAfterBlock, String blockName) {
this(block.block, connects, throwsException, hashChainTipAfterBlock, heightAfterBlock, blockName);
coinbaseBlockMap.put(block.getCoinbaseOutput().outpoint.getHash(), block.getHash());
Integer blockHeight = blockToHeightMap.get(block.block.getPrevBlockHash());
if (blockHeight != null) {
blockHeight++;
for (Transaction t : block.block.getTransactions())
for (TransactionInput in : t.getInputs()) {
Sha256Hash blockSpendingHash = coinbaseBlockMap.get(in.getOutpoint().getHash());
checkState(blockSpendingHash == null || blockToHeightMap.get(blockSpendingHash) == null ||
blockToHeightMap.get(blockSpendingHash) == blockHeight - params.getSpendableCoinbaseDepth());
}
}
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