RCasatta

Homebrew build logs for python3 on Mac OS X 10.11.6
Build date: 2016-08-31 16:54:27

RCasatta

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Hello World!

This message is both signed with pgp and timestamped with OpenTimestamps.
Even if my key will be compromised, the attacker cannot forge this message backward.

Have a nice day.

RCasatta

from ethereum import trie, db, utils
import rlp

# Block number 233481
# hash 0xccc6da94c2f8d222ef723db7c0469fb54790d30c31c4c176837570953a11d4b5
# tx hash root 0x94855872b7fee469b12577beb875a3ad65b479a216cbbaf9f23ab1277393b084
# contain one tx with hash 0x0d3789c1341c2edb92429f8e8f669f057be5bad2b5dba9ac52069e5b2535e696
# whose content is 0xf86f824ed5850ba43b740083015f90941df99e975f2e6c2e6945cda3a377552cb582caf688477a615df3b28800801ca09e43bb22f0458d7f3025dfa01e9f223743f8dae2c7b11070529dc2733358f0fba07bfe8c286d21839d153733328d8f48e7e7b3fe79c2f31fd2bf992b2381980f48

tx = 'f86f824ed5850ba43b740083015f90941df99e975f2e6c2e6945cda3a377552cb582caf688477a615df3b28800801ca09e43bb22f0458d7f3025dfa01e9f223743f8dae2c7b11070529dc2733358f0fba07bfe8c286d21839d153733328d8f48e7e7b3fe79c2f31fd2bf992b2381980f48'.decode('hex')

RCasatta

File sha256 hash: 62c8b090faa21ee5f2e75399d4909e1e27a00ade7dca8f219c6fd34f54de3494
Timestamp:
append c237d4ddbf2f14816956503d0d5a766b
sha256
 -> append 4e1e40b3ca59836ba67eefe04bbab6d4
    sha256
    prepend 58b93f93
    append 2035d407feee535c
    verify PendingAttestation('https://eth.ots.eternitywall.com')
    sha256

RCasatta

SHA256 digest of some data.
Starting digest: 8bd5a5f07b4451c29756df5eb51d194fb5b20c7e89812d877bbad30d871c582f
execute Append(b63d8f213d047298b8ab4595acd8e5d0)
 result 8bd5a5f07b4451c29756df5eb51d194fb5b20c7e89812d877bbad30d871c582fb63d8f213d047298b8ab4595acd8e5d0
execute SHA256()
 result 9f42984ccdb96addb79884e714cc6b6b059c68f2ac3a2e07c5198c22d904de14
execute Prepend(ae59d2c0d2f5efa97df8f3cca7e85845880c102237f1a6a1b0b4c6a5ab77f494)
 result ae59d2c0d2f5efa97df8f3cca7e85845880c102237f1a6a1b0b4c6a5ab77f4949f42984ccdb96addb79884e714cc6b6b059c68f2ac3a2e07c5198c22d904de14
execute SHA256()
 result 0bca1ed1718c71929130a639f0a7b82eeb91a8fa45b16510c9ee15fec4a0bf15

RCasatta

$ ./ots -v info examples/hello-world.txt.ots 
File sha256 hash: 03ba204e50d126e4674c005e04d82e84c21366780af1f43bd54a37816b6ab340
Timestamp:
ripemd160 == 1df8859e60bc679503d16dcb870e6ce91a57e9df
prepend 0100000001e482f9d32ecc3ba657b69d898010857b54457a90497982ff56f97c4ec58e6f98010000006b483045022100b253add1d1cf90844338a475a04ff13fc9e7bd242b07762dea07f5608b2de367022000b268ca9c3342b3769cdd062891317cdcef87aac310b6855e9d93898ebbe8ec0121020d8e4d107d2b339b0050efdd4b4a09245aa056048f125396374ea6a2ab0709c6ffffffff026533e605000000001976a9140bf057d40fbba6744862515f5b55a2310de5772f88aca0860100000000001976a914 == 0100000001e482f9d32ecc3ba657b69d898010857b54457a90497982ff56f97c4ec58e6f98010000006b483045022100b253add1d1cf90844338a475a04ff13fc9e7bd242b07762dea07f5608b2de367022000b268ca9c3342b3769cdd062891317cdcef87aac310b6855e9d93898ebbe8ec0121020d8e4d107d2b339b0050efdd4b4a09245aa056048f125396374ea6a2ab0709c6ffffffff026533e605000000001976a9140bf057d40fbba6744862515f5b55a2310de5772f88aca0860100000000001976a9141df8859e60bc679503

RCasatta

Compiling bitcoin v0.3.10
error: `$r:expr` may be followed by `copy`, which is not allowed for `expr` fragments
    --> /Users/casatta/.cargo/registry/src/github.com-1ecc6299db9ec823/bitcoin-0.3.10/src/blockdata/script.rs:1690:16
     |
1690 |              $(copy $c:expr);*
     |                ^^^^

error: `$r:expr` may be followed by `swap`, which is not allowed for `expr` fragments
    --> /Users/casatta/.cargo/registry/src/github.com-1ecc6299db9ec823/bitcoin-0.3.10/src/blockdata/script.rs:1691:16
     |

RCasatta

#!/usr/bin/env python
''' Run from "electrum/lib" directory.
ThomaxV started a discussion on https://bitcointalk.org/index.php?topic=274182.msg2939599#msg2939599
about changing the HD derivation logic in electrum 2. The below post:
http://bitcoin.stackexchange.com/questions/37013/how-to-import-a-hd-wallet-from-an-extended-private-key
confirms that the format is actually m/c/i (and not m/44'/0'/a'/c/i)
so I have altered https://gist.github.com/romanz/4b32782bfc0ff4984713 accordingly:
tested to work with keys/addresses exported from electrum 2.7.0
note Electrum has a "gap limit" of 20, so loop @ level "c" to get the next 20 addresses
'''

RCasatta

const fs = require('fs');

function saveOts(otsFilename, buffer) {
    fs.exists(otsFilename, fileExist => {
        if (fileExist) {
            console.log('The timestamp proof \'' + otsFilename + '\' already exists');
        } else {
            fs.writeFile(otsFilename, buffer, 'binary', err => {
                if (err) {
                    return console.log(err);

RCasatta

package com.eternitywall;

import javax.xml.bind.DatatypeConverter;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;

public class Main {