#get hash of block at height n

blockhash=node.connect('getblockhash',[n])

blockdata=node.connect('getblock',[blockhash])

txdata=tx_lookup(txhash)

global prevtxidsq

automatic=False

txins=txdata['vin']

prevtxids=[]

for x in txins:

if 'txid' in x: #is normal transaction, not automatic block reward

prevtxids.append([x['txid'],x['vout']])

else:

height=node.connect('getblock',[txdata['blockhash']])['height']

prevtxids.append(height)

automatic=True

answer={}

if automatic==False:

#who was the destination of that txid,outputn pair?

answer['inputs']=[]

for a in prevtxids:

data=tx_lookup(a[0])

address=data['vout'][a[1]]['scriptPubKey']['addresses'][0] #ONLY ONE ADDRESS PER OUTPUT!!!

amount=data['vout'][a[1]]['value']

f={}

f['address']=address

f['amount']=amount

f['txid']=a[0]

answer['inputs'].append(f)

else:

answer['block']=prevtxids[0]

a=tx_lookup(txhash)

b=tx_inputs(txhash)

c= dict(a.items() + b.items())

starttime=time.time()

a=getblockmeta(n)

t=[]

j=0

g=str(len(a['tx']))

for x in a['tx']:

j=j+1

print str(j)+" / "+g

t.append(gettx(x))

duration=time.time()-starttime

print "This took: "+str(duration)+" seconds"

r=tx_lookup(txhash)

m=-1

if 'vout' in r:

v=0

for x in r['vout']:

if 'value' in x:

v=v+x['value']

if x['scriptPubKey']['hex'][0:2]=='6a': #OP RETURN, only 1 per tx

d=x['scriptPubKey']['hex']

m=d[2:len(d)]

m=m.decode('hex')

m=m[1:len(m)]

#return m

#if m=='':

#return -1

blockmeta=getblockmeta(n)

txhashes=blockmeta['tx']

results=[]

messages=[]

for tx in txhashes:

#print tx

n=read_tx(tx)

m=n[0]

if not m==-1:

messages.append([tx,m,n[1]])

a=requests.get("http://blockchain.info/block-height/"+str(n)+"?format=json").content

a=json.loads(a)

for x in a['blocks']:

if x['main_chain']:

a=x

txs=a['tx']

answers=[]

for tx in txs:

for out in tx['out']:

script=out['script']

if script[0:2]=="6a":

script=script[4:len(script)]

script=script.decode("hex")

answers.append([tx['hash'],script])

global d,e,g, count,f, hexmetadata

hexmetadata=metadata.encode('hex')

opcode=metadata[0:2]

results={}

if opcode=='OA': #then OA

results['type']='OA'

results['version']=metadata[2:4].encode('hex')

results['asset_count']=int(metadata[4:5].encode('hex'))

count=0

d=[]

for x in metadata[5:len(metadata)]:

r=leb128.hexpiecetobinary(x.encode('hex'))

d.append(r)

e=[]

r=[]

for x in d:

r.append(x)

if x[0]=='0':

e.append(r)

r=[]

f=[]

n=0

for x in e:

if n<int(results['asset_count'])+1:

f.append(leb128.decode(x))

count=count+len(x)

n=n+1

results['asset_quantities']=f[0:len(f)-1]

results['metadata_length']=f[len(f)-1]

results['metadata']=metadata[5+count:len(metadata)]

r=txhash_with_index.index(":")

markerposition=int(txhash_with_index[r+1:len(txhash_with_index)])

txhash=txhash_with_index[0:r]

txdata=tx_lookup(txhash)

txoutputs=txdata['vout']

results['issued']=[]

for i in range(0,markerposition):

h={}

h['quantity']=results['asset_quantities'][i]

#assumes first input is correct input....??!

script=tx_lookup(txdata['vin'][0]['txid'])['vout'][txdata['vin'][0]['vout']]['scriptPubKey']['hex']

print script

h['txhash_index']=txhash+":"+str(i)

h['color_address']=script_to_coloraddress(script)

h['destination_address']=txoutputs[i]['scriptPubKey']['addresses'][0] #one dest per output

h['btc']=int(txoutputs[i]['value']*100000000)

h['previous_inputs']="source:"+str(tx_lookup(txdata['vin'][0]['txid'])['vout'][txdata['vin'][0]['vout']]['scriptPubKey']['addresses'][0])

results['issued'].append(h)

results['transferred']=[]

for i in range(markerposition+1, len(txoutputs)):

if i<=len(results['asset_quantities']):

h={}

h['out_n']=i

h['txhash_index']=txhash+":"+str(i)

h['quantity']=results['asset_quantities'][i-1]

h['color_address']="" #FIGURE THIS PART OUT

h['previous_inputs']=[]

for x in txdata['vin']:

h['previous_inputs'].append(str(x['txid'])+":"+str(x['vout']))

# txdata['vin'][i-1]['txid']+":"+str(txdata['vin'][i-1]['vout']) #ASSUMES ONE TO ONE CORRESPONDENCE, NOT ALWAYS TRUE

print txoutputs[i-1]

h['destination_address']=txoutputs[i]['scriptPubKey']['addresses'][0]

h['btc']=int(txoutputs[i]['value']*100000000)

results['transferred'].append(h)

#PLAINTEXT SCRIPT TO BE ENCODED INTO OP RETURN using Transaction.make_info_script

global encoded

#work in hex

result='4f410100' #OA + version 0100

assetcount=str(len(asset_quantities))

if len(assetcount)==1:

assetcount='0'+assetcount

result=result+assetcount

for asset in asset_quantities:

encoded=leb128.encode(asset)

j=''

for x in encoded:

r=str(hex(int(x,2)))

if len(r)==3:

r='0'+r[2:3]

else:

r=r[2:len(r)]

j=j+r

result=result+j

length=hex(len(otherdata))

if len(length)==3:

length=length[2:len(length)]

length='0'+length

else:

length=length[2:len(length)]

result=result+length

result=result+otherdata.encode('hex')

return result

txdata=tx_lookup(txid)

message=read_tx(txid)

message=message[0]

isOA=False

markerposition=-1

result={}

#find marker position and ascertain whether OA

for x in txdata['vout']:

if x['scriptPubKey']['hex'][0:2]=='6a' and isOA==False and x['scriptPubKey']['hex'][4:8]=='4f41':

isOA=True

markerposition= x['n']

#INPUT COLORS IS ARRAY OF DICTIONARIES [ {'color_address':'', 'amount':''}]

#Tabulate sums of inputs of different colors

inputsums={}

for x in inputcolors:

inputsums[x['color_address']]= inputsums[x['color_address']]+ x['amount']

#If it is OA

if isOA:

#get meta data

result['meta']=parse_colored_tx(message)

result['txid']= txdata['txid']

#Describe Issuing Outputs

result['issued']=[]

for i in range(0,markerposition):

k={}

amt= result['meta']['asset_quantities'][i]

k['amount']=amt

k['color_address']='' #FIGURE THIS PART OUT

k['destination_address']= txdata['vout'][i]['scriptPubKey']['addresses'][0] #ONLY EVER ONE ADDRESS PER OUTPUT

k['output_n']=i

result['issued'].append(k)

#Describe Transfer Outputs

result['transferred']=[]

for i in range(markerposition,len(txdata['vout'])):

k={}

supposedamt= result['meta']['assetquantities'][i] #MIGHT BE WRONG i

k['color_address']=''

if supposedamt<= inputsums[k['color_address']]: #THERE IS ENOUGH TO TRANSFER

amt=supposedamt

k['amount']=amt

k['destination_address']= txdata['vout'][i]['scriptPubKey']['addresses'][0]

k['output_n']=i

result['transferred'].append(k)

messages=op_return_in_block(n)

global markerposition

results=[]

for x in messages:

metadata=x[1]

r={}

isOA=False

txdata=tx_lookup(x[0]) #REDUNDANT CALL

#POSITION OF MARKER OUTPUT IN ALL OUTPUTS

markerposition=-1

for x in txdata['vout']:

#MIGHT BE ISSUE HERE WITH OP_PUSHDATA

if x['scriptPubKey']['hex'][0:2]=='6a' and isOA==False and x['scriptPubKey']['hex'][4:8]=='4f41':

#IS OPRETURN and is OA

isOA=True

markerposition= x['n']

if isOA:

r['meta']=parse_colored_tx(metadata)

r['txid']= txdata['txid']

r['issued']=[]

for i in range(0,markerposition):

k={}

amt= r['meta']['asset_quantities'][i]

k['amount']=amt

k['color_address']='' #FIGURE THIS PART OUT

k['destination_address']= txdata['vout'][i]['scriptPubKey']['addresses'][0] #ONLY EVER ONE ADDRESS PER OUTPUT

r['issued'].append(k)

r['transferred']=[]

results.append(r)