phun.io (OP)
Copper Member
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Activity: 154
Merit: 2
phun.io - The Social Gambling Game
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March 24, 2018, 01:51:32 AM |
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Welcome to the phun.io Provably Fair Seeding Event! This will reuse the idea posted by Ryan and used for Bustabit v1. - A chain of 10 million (1e7) sha256 hashes was generated, starting with a Server Secret that has been repeatedly fed the output of sha256 hash back into itself 10 million times.
The final hash in the chain is: ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a, by publicizing it here we are preventing any ability to pick an alternate sha256 chain. - phun.io will play through that chain of hashes, in reverse order, and use the hashes to determine the crash point.
- To avoid criticism that the Server Secret used in step 1 was carefully chosen to generate lots of "bad" crash points, each hash in the chain will be salted with a client seed, which we have no control of.
The client seed will be the block hash of a Bitcoin Cash block that hasn't yet been mined: block 522752
The reference code (javascript) is as follows: The method to create the hash chain is simply sha256: function genGameHash(serverSeed) { return crypto.createHash('sha256').update(serverSeed).digest('hex'); } The method to convert a game hash, mix it with the picked client seed to a money pot multiplier: function crashPointFromHash(serverSeed, clientSeed) { function divisible(hash, mod) { // We will read in 4 hex at a time, but the first chunk might be a bit smaller // So ABCDEFGHIJ should be chunked like AB CDEF GHIJ var val = 0; var o = hash.length % 4; for (var i = o > 0 ? o - 4 : 0; i < hash.length; i += 4) { val = ((val << 16) + parseInt(hash.substring(i, i+4), 16)) % mod; }
return val === 0; }
var hash = crypto.createHmac('sha256', serverSeed).update(clientSeed).digest('hex');
/* In 1 of 101 games the game crashes instantly. */ if (divisible(hash, 101)) return 0;
/* Use the most significant 52-bit from the hash to calculate the crash point */ var h = parseInt(hash.slice(0,52/4),16); var e = Math.pow(2,52);
return Math.floor((100 * e - h) / (e - h)); } The chain could be generated with code such as: var serverSecret = 'If you knew this, you could steal all my money'; var clientSeed = '0000examplehash';
var gamesToGenerate = 1e7;
var serverSeed = serverSecret;
for (var game = gamesToGenerate; game > 0; --game) { serverSeed = genGameHash(serverSeed); console.log('Game ' + game + ' has a crash point of ' + (crashPointFromHash(serverSeed, clientSeed) / 100).toFixed(2) +'x', '\t\tHash: ' + serverSeed); }
var terminatingHash = genGameHash(serverSeed);
console.log('The terminating hash is: ', terminatingHash); Using our chosen starting serverSeed, the hash terminating the chain is ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a. That is to say, the first game's hash played under the new provably fair scheme, when hashed will be ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a. Play now: https://www.phun.io
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crypto_m3rchant
Newbie
Offline
Activity: 1
Merit: 0
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March 24, 2018, 01:55:20 AM |
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Welcome to the phun.io Provably Fair Seeding Event! This will reuse the idea posted by Ryan and used for Bustabit v1. - A chain of 10 million (1e7) sha256 hashes was generated, starting with a Server Secret that has been repeatedly fed the output of sha256 hash back into itself 10 million times.
The final hash in the chain is: ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a, by publicizing it here we are preventing any ability to pick an alternate sha256 chain. - phun.io will play through that chain of hashes, in reverse order, and use the hashes to determine the crash point.
- To avoid criticism that the Server Secret used in step 1 was carefully chosen to generate lots of "bad" crash points, each hash in the chain will be salted with a client seed, which we have no control of.
The client seed will be the block hash of a Bitcoin Cash block that hasn't yet been mined: block 522752
The reference code (javascript) is as follows: The method to create the hash chain is simply sha256: function genGameHash(serverSeed) { return crypto.createHash('sha256').update(serverSeed).digest('hex'); } The method to convert a game hash, mix it with the picked client seed to a money pot multiplier: function crashPointFromHash(serverSeed, clientSeed) { function divisible(hash, mod) { // We will read in 4 hex at a time, but the first chunk might be a bit smaller // So ABCDEFGHIJ should be chunked like AB CDEF GHIJ var val = 0; var o = hash.length % 4; for (var i = o > 0 ? o - 4 : 0; i < hash.length; i += 4) { val = ((val << 16) + parseInt(hash.substring(i, i+4), 16)) % mod; }
return val === 0; }
var hash = crypto.createHmac('sha256', serverSeed).update(clientSeed).digest('hex');
/* In 1 of 101 games the game crashes instantly. */ if (divisible(hash, 101)) return 0;
/* Use the most significant 52-bit from the hash to calculate the crash point */ var h = parseInt(hash.slice(0,52/4),16); var e = Math.pow(2,52);
return Math.floor((100 * e - h) / (e - h)); } The chain could be generated with code such as: var serverSecret = 'If you knew this, you could steal all my money'; var clientSeed = '0000examplehash';
var gamesToGenerate = 1e7;
var serverSeed = serverSecret;
for (var game = gamesToGenerate; game > 0; --game) { serverSeed = genGameHash(serverSeed); console.log('Game ' + game + ' has a crash point of ' + (crashPointFromHash(serverSeed, clientSeed) / 100).toFixed(2) +'x', '\t\tHash: ' + serverSeed); }
var terminatingHash = genGameHash(serverSeed);
console.log('The terminating hash is: ', terminatingHash); Using our chosen starting serverSeed, the hash terminating the chain is ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a. That is to say, the first game's hash played under the new provably fair scheme, when hashed will be ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a. Play now: https://www.phun.ioI am quoting this so OP doesn't make changes.
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phun.io (OP)
Copper Member
Jr. Member
Offline
Activity: 154
Merit: 2
phun.io - The Social Gambling Game
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March 24, 2018, 02:00:32 AM |
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phun.io (OP)
Copper Member
Jr. Member
Offline
Activity: 154
Merit: 2
phun.io - The Social Gambling Game
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January 02, 2019, 12:10:43 PM |
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Due to a little problem we encountered, we will be doing the seeding event again starting from game 2,000,000. Games between 1,000,000 - 1,999,999 can still be verified using the previous final hash: ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a
This will reuse the idea posted by Ryan and used for Bustabit v1. - A chain of 10 million (1e7) sha256 hashes was generated, starting with a Server Secret that has been repeatedly fed the output of sha256 hash back into itself 10 million times.
The final hash in the chain is: b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211, by publicizing it here we are preventing any ability to pick an alternate sha256 chain. - phun.io will play through that chain of hashes, in reverse order, and use the hashes to determine the crash point.
- To avoid criticism that the Server Secret used in step 1 was carefully chosen to generate lots of "bad" crash points, each hash in the chain will be salted with a client seed, which we have no control of.
The client seed will be the block hash of a Bitcoin SV block that hasn't yet been mined: block 563470
The reference code (javascript) is as follows: The method to create the hash chain is simply sha256: function genGameHash(serverSeed) { return crypto.createHash('sha256').update(serverSeed).digest('hex'); } The method to convert a game hash, mix it with the picked client seed to a money pot multiplier: function crashPointFromHash(serverSeed, clientSeed) { function divisible(hash, mod) { // We will read in 4 hex at a time, but the first chunk might be a bit smaller // So ABCDEFGHIJ should be chunked like AB CDEF GHIJ var val = 0; var o = hash.length % 4; for (var i = o > 0 ? o - 4 : 0; i < hash.length; i += 4) { val = ((val << 16) + parseInt(hash.substring(i, i+4), 16)) % mod; }
return val === 0; }
var hash = crypto.createHmac('sha256', serverSeed).update(clientSeed).digest('hex');
/* In 1 of 101 games the game crashes instantly. */ if (divisible(hash, 101)) return 0;
/* Use the most significant 52-bit from the hash to calculate the crash point */ var h = parseInt(hash.slice(0,52/4),16); var e = Math.pow(2,52);
return Math.floor((100 * e - h) / (e - h)); } The chain could be generated with code such as: var serverSecret = 'If you knew this, you could steal all my money'; var clientSeed = '0000examplehash';
var gamesToGenerate = 1e7;
var serverSeed = serverSecret;
for (var game = gamesToGenerate; game > 0; --game) { serverSeed = genGameHash(serverSeed); console.log('Game ' + game + ' has a crash point of ' + (crashPointFromHash(serverSeed, clientSeed) / 100).toFixed(2) +'x', '\t\tHash: ' + serverSeed); }
var terminatingHash = genGameHash(serverSeed);
console.log('The terminating hash is: ', terminatingHash); Using our chosen starting serverSeed, the hash terminating the chain is b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211. That is to say, the 2 millionth game's hash played under the new provably fair scheme, when hashed will be b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211. Play now: https://www.phun.io
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phun.io (OP)
Copper Member
Jr. Member
Offline
Activity: 154
Merit: 2
phun.io - The Social Gambling Game
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January 02, 2019, 12:14:18 PM |
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Due to a little problem we encountered, we will be doing the seeding event again starting from game 2,000,000. Games between 1,000,000 - 1,999,999 can still be verified using the previous final hash: ad699bff1c169b3553687720c5d4b4c22e9f729c12782730c7399264c3593d9a
This will reuse the idea posted by Ryan and used for Bustabit v1. - A chain of 10 million (1e7) sha256 hashes was generated, starting with a Server Secret that has been repeatedly fed the output of sha256 hash back into itself 10 million times.
The final hash in the chain is: b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211, by publicizing it here we are preventing any ability to pick an alternate sha256 chain. - phun.io will play through that chain of hashes, in reverse order, and use the hashes to determine the crash point.
- To avoid criticism that the Server Secret used in step 1 was carefully chosen to generate lots of "bad" crash points, each hash in the chain will be salted with a client seed, which we have no control of.
The client seed will be the block hash of a Bitcoin SV block that hasn't yet been mined: block 563470
The reference code (javascript) is as follows: The method to create the hash chain is simply sha256: function genGameHash(serverSeed) { return crypto.createHash('sha256').update(serverSeed).digest('hex'); } The method to convert a game hash, mix it with the picked client seed to a money pot multiplier: function crashPointFromHash(serverSeed, clientSeed) { function divisible(hash, mod) { // We will read in 4 hex at a time, but the first chunk might be a bit smaller // So ABCDEFGHIJ should be chunked like AB CDEF GHIJ var val = 0; var o = hash.length % 4; for (var i = o > 0 ? o - 4 : 0; i < hash.length; i += 4) { val = ((val << 16) + parseInt(hash.substring(i, i+4), 16)) % mod; }
return val === 0; }
var hash = crypto.createHmac('sha256', serverSeed).update(clientSeed).digest('hex');
/* In 1 of 101 games the game crashes instantly. */ if (divisible(hash, 101)) return 0;
/* Use the most significant 52-bit from the hash to calculate the crash point */ var h = parseInt(hash.slice(0,52/4),16); var e = Math.pow(2,52);
return Math.floor((100 * e - h) / (e - h)); } The chain could be generated with code such as: var serverSecret = 'If you knew this, you could steal all my money'; var clientSeed = '0000examplehash';
var gamesToGenerate = 1e7;
var serverSeed = serverSecret;
for (var game = gamesToGenerate; game > 0; --game) { serverSeed = genGameHash(serverSeed); console.log('Game ' + game + ' has a crash point of ' + (crashPointFromHash(serverSeed, clientSeed) / 100).toFixed(2) +'x', '\t\tHash: ' + serverSeed); }
var terminatingHash = genGameHash(serverSeed);
console.log('The terminating hash is: ', terminatingHash); Using our chosen starting serverSeed, the hash terminating the chain is b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211. That is to say, the 2 millionth game's hash played under the new provably fair scheme, when hashed will be b099a967f8154d3e833f29b9df58378cfe3bbb78a757f3e84c5b6565035ed211. Play now: https://www.phun.ioWe are quoting this and have also generated a snapshot as proof we won't edit the post: https://web.archive.org/web/20190102121221/https://bitcointalk.org/index.php?topic=3187788
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Kid_diK
Member
Offline
Activity: 322
Merit: 12
bit★Starz - Dream Big, Win Bigger
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February 11, 2019, 08:09:34 AM |
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Scam
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