def getMerkle(
self,
holderArg: blspy.PublicKey,
start: int,
end: int = -1
) -> bytes:
holder: bytes = holderArg.serialize()
merkle: List[bytes] = []
end += 1
if end == 0:
end = len(self.holders[holder])
for e in range(start, end):
elem: Element = self.holders[holder][e]
if isinstance(elem, Verification):
merkle.append(
blake2b(
elem.prefix + Verification.serialize(Verification.fromElement(elem)),
digest_size=48
).digest()
)
elif isinstance(elem, MeritRemoval):
if merkle:
raise Exception("Creating a merkle with a MeritRemoval despite the merkle already having elements.")
merkle.append(
blake2b(
elem.prefix + MeritRemoval.serialize(MeritRemoval.fromElement(elem)),
digest_size=48
).digest()
)
if e != end - 1:
raise Exception("Creating a merkle with a MeritRemoval despite the merkle having more elements after this.")
else:
raise Exception("MeritHolder has an unsupported Element type: " + type(elem).__name__)
if not merkle:
return b'\0' * 48
while len(merkle) != 1:
if len(merkle) % 2 == 1:
merkle.append(merkle[-1])
for m in range(0, len(merkle), 2):
merkle[m // 2] = blake2b(
merkle[m] + merkle[m + 1],
digest_size=48
).digest()
merkle = merkle[: len(merkle) // 2]
return merkle[0]
def fromJSON(json: Dict[str, Any]) -> Any:
e1: Element = Element()
if json["elements"][0]["descendant"] == "Verification":
e1 = Verification.fromJSON(json["elements"][0])
e2: Element = Element()
if json["elements"][1]["descendant"] == "Verification":
e2 = Verification.fromJSON(json["elements"][1])
result: MeritRemoval = MeritRemoval(json["partial"], e1, e2)
result.nonce = json["nonce"]
return result
def updateTXs(self, holder: bytes, tips: Dict[bytes, int]) -> None:
#If the holder doesn't have an entry, provide one.
if holder not in self.allTips:
self.allTips[holder] = -1
#Iterate over every new Element.
for e in range(self.allTips[holder] + 1, tips[holder] + 1):
elem: Element = self.consensus.holders[holder][e]
#If it was a Verification, track the mentionmd transaction.
if isinstance(elem, Verification):
if Verification.fromElement(elem).hash not in self.synced:
self.txs[Verification.fromElement(elem).hash] = True
def fromJSON(
sendDiff: bytes,
dataDiff: bytes,
json: Dict[str, List[Dict[str, Any]]]
) -> Any:
result = Consensus(sendDiff, dataDiff)
for mh in json:
for elem in json[mh]:
if "signed" in elem:
if elem["descendant"] == "Verification":
result.add(SignedVerification.fromJSON(elem))
elif elem["descendant"] == "MeritRemoval":
if elem["partial"]:
result.add(PartiallySignedMeritRemoval.fromJSON(elem))
else:
result.add(SignedMeritRemoval.fromJSON(elem))
else:
raise Exception("JSON has an unsupported Element type: " + elem["descendant"])
else:
if elem["descendant"] == "Verification":
result.add(Verification.fromJSON(elem))
elif elem["descendant"] == "MeritRemoval":
result.add(MeritRemoval.fromJSON(elem))
else:
raise Exception("JSON has an unsupported Element type: " + elem["descendant"])
return result
def add(self, transactions: Transactions, consensus: Consensus,
state: State, block: Block) -> List[Mint]:
#Construct the new Epoch.
epoch: Dict[bytes, List[bytes]] = {}
for record in block.body.records:
mh: bytes = record[0].serialize()
start = 0
if mh in self.tips:
start = self.tips[mh]
self.tips[mh] = record[1]
for e in range(start, record[1] + 1):
if isinstance(consensus.holders[mh][e], Verification):
tx: bytes = Verification.fromElement(
consensus.holders[mh][e]).hash
if not tx in epoch:
epoch[tx] = []
epoch[tx].append(mh)
#Move TXs belonging to an old Epoch to said Epoch.
txs: List[bytes] = list(epoch.keys())
for tx in txs:
for e in range(5):
if tx in self.epochs[e]:
self.epochs[e][tx] += epoch[tx]
del epoch[tx]
#Grab the oldest Epoch.
self.epochs.append(epoch)
epoch = self.epochs[0]
del self.epochs[0]
return self.score(transactions, state, epoch)
def fromJSON(keys: Dict[bytes, int], jsonArg: Dict[str, Any]) -> Any:
json: Dict[str, Any] = dict(jsonArg)
json["elements"] = list(json["elements"])
json["elements"][0] = dict(json["elements"][0])
json["elements"][1] = dict(json["elements"][1])
json["elements"][0]["holder"] = json["holder"]
json["elements"][1]["holder"] = json["holder"]
e1: Element = Verification(bytes(32), 0)
if json["elements"][0]["descendant"] == "Verification":
e1 = Verification.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "VerificationPacket":
json["elements"][0]["holders"] = list(
json["elements"][0]["holders"])
for h in range(len(json["elements"][0]["holders"])):
json["elements"][0]["holders"][h] = keys[bytes.fromhex(
json["elements"][0]["holders"][h])]
e1 = VerificationPacket.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "SendDifficulty":
e1 = SendDifficulty.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "DataDifficulty":
e1 = DataDifficulty.fromJSON(json["elements"][0])
else:
raise Exception(
"Unknown Element used to construct a MeritRemoval.")
e2: Element = Verification(bytes(32), 0)
if json["elements"][1]["descendant"] == "Verification":
e2 = Verification.fromJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "VerificationPacket":
json["elements"][1]["holders"] = list(
json["elements"][1]["holders"])
for h in range(len(json["elements"][1]["holders"])):
json["elements"][1]["holders"][h] = keys[bytes.fromhex(
json["elements"][1]["holders"][h])]
e2 = VerificationPacket.fromJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "SendDifficulty":
e2 = SendDifficulty.fromJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "DataDifficulty":
e2 = DataDifficulty.fromJSON(json["elements"][1])
else:
raise Exception(
"Unknown Element used to construct a MeritRemoval.")
return MeritRemoval(e1, e2, json["partial"])
def fromSignedJSON(keys: Dict[bytes, int], jsonArg: Dict[str, Any]) -> Any:
json: Dict[str, Any] = dict(jsonArg)
json["elements"] = list(json["elements"])
json["elements"][0] = dict(json["elements"][0])
json["elements"][1] = dict(json["elements"][1])
json["elements"][0]["holder"] = json["holder"]
json["elements"][1]["holder"] = json["holder"]
e1: Union[SignedVerification, SignedVerificationPacket,
SignedSendDifficulty,
SignedDataDifficulty] = SignedVerification(bytes(32), 0)
if json["elements"][0]["descendant"] == "Verification":
e1 = Verification.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "VerificationPacket":
json["elements"][0]["holders"] = list(
json["elements"][0]["holders"])
for h in range(len(json["elements"][0]["holders"])):
json["elements"][0]["holders"][h] = keys[bytes.fromhex(
json["elements"][0]["holders"][h])]
e1 = VerificationPacket.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "SendDifficulty":
e1 = SendDifficulty.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "DataDifficulty":
e1 = DataDifficulty.fromJSON(json["elements"][0])
e2: Union[SignedVerification, SignedVerificationPacket,
SignedSendDifficulty,
SignedDataDifficulty] = SignedVerification(bytes(32), 0)
if json["elements"][1]["descendant"] == "Verification":
e2 = SignedVerification.fromSignedJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "VerificationPacket":
json["elements"][1]["holders"] = list(
json["elements"][1]["holders"])
for h in range(len(json["elements"][1]["holders"])):
json["elements"][1]["holders"][h] = keys[bytes.fromhex(
json["elements"][1]["holders"][h])]
e2 = SignedVerificationPacket.fromSignedJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "SendDifficulty":
e2 = SignedSendDifficulty.fromSignedJSON(json["h"][1])
elif json["elements"][1]["descendant"] == "DataDifficulty":
e2 = SignedDataDifficulty.fromSignedJSON(json["elements"][1])
return PartialMeritRemoval(e1, e2)
def fromJSON(json: Dict[str, Any]) -> Any:
e1: Element = Element()
if json["elements"][0]["descendant"] == "Verification":
e1 = Verification.fromJSON(json["elements"][0])
else:
raise Exception(
"MeritRemoval constructed from an unsupported type of Element: "
+ json["elements"][0]["descendant"])
se2: SignedElement = SignedElement()
if json["elements"][1]["descendant"] == "Verification":
se2 = SignedVerification.fromJSON(json["elements"][1])
else:
raise Exception(
"MeritRemoval constructed from an unsupported type of Element: "
+ json["elements"][1]["descendant"])
result: PartiallySignedMeritRemoval = PartiallySignedMeritRemoval(
e1, se2)
result.nonce = json["nonce"]
return result
def fromSignedJSON(jsonArg: Dict[str, Any]) -> Any:
json: Dict[str, Any] = dict(jsonArg)
json["elements"] = list(json["elements"])
json["elements"][0] = dict(json["elements"][0])
json["elements"][1] = dict(json["elements"][1])
json["elements"][0]["holder"] = json["holder"]
json["elements"][1]["holder"] = json["holder"]
e1: Union[SignedVerification, SignedMeritRemovalVerificationPacket,
SignedSendDifficulty,
SignedDataDifficulty] = SignedVerification(bytes(32), 0)
if json["elements"][0]["descendant"] == "Verification":
e1 = Verification.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "VerificationPacket":
e1 = SignedMeritRemovalVerificationPacket.fromJSON(
json["elements"][0])
elif json["elements"][0]["descendant"] == "SendDifficulty":
e1 = SendDifficulty.fromJSON(json["elements"][0])
elif json["elements"][0]["descendant"] == "DataDifficulty":
e1 = DataDifficulty.fromJSON(json["elements"][0])
e2: Union[SignedVerification, SignedMeritRemovalVerificationPacket,
SignedSendDifficulty,
SignedDataDifficulty] = SignedVerification(bytes(32), 0)
if json["elements"][1]["descendant"] == "Verification":
e2 = SignedVerification.fromSignedJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "VerificationPacket":
e2 = SignedMeritRemovalVerificationPacket.fromSignedJSON(
json["elements"][1])
elif json["elements"][1]["descendant"] == "SendDifficulty":
e2 = SignedSendDifficulty.fromSignedJSON(json["elements"][1])
elif json["elements"][1]["descendant"] == "DataDifficulty":
e2 = SignedDataDifficulty.fromSignedJSON(json["elements"][1])
return PartialMeritRemoval(e1, e2, json["holder"])
blsPrivKey1: blspy.PrivateKey = blspy.PrivateKey.from_seed(b'\0')
blsPubKey1: blspy.PublicKey = blsPrivKey1.get_public_key()
blsPrivKey2: blspy.PrivateKey = blspy.PrivateKey.from_seed(b'\1')
blsPubKey2: blspy.PublicKey = blsPrivKey2.get_public_key()
#Give the second key pair Merit.
block: Block = Block(
BlockHeader(13, blockchain.last(), int(time())),
BlockBody([], [(blsPubKey2, 100)])
)
block.mine(blockchain.difficulty())
blockchain.add(block)
print("Generated Competing Block " + str(block.header.nonce) + ".")
#Grab the claim hash.
claim: bytes = Verification.fromElement(consensus.holders[blsPubKey1.serialize()][1]).hash
#Create two competing Sends.
send1: Send = Send(
[(claim, 0)],
[(
edPubKey1.to_bytes(),
Claim.fromTransaction(transactions.txs[claim]).amount
)]
)
send1.sign(edPrivKey1)
send1.beat(consensus.sendFilter)
send1.verified = True
transactions.add(send1)
send2: Send = Send(