I Thought that all Bitcoin addresses started with a 1... ?????

[S4VV4S]

Like the title says, I thought that all Bitcoin addresses started with a 1 until I saw this: http://bitcoinchain.com/block_explorer/catalog/338378

[howzar]

I believe those are multi signature addresses.

[pandit]

i too thinking same   all addrs will be from 1 

[BitCoinDream]

Like the title says, I thought that all Bitcoin addresses started with a 1 until I saw this: http://bitcoinchain.com/block_explorer/catalog/338378

A Bitcoin address, or simply address, is an identifier of 27-34 alphanumeric characters, beginning with the number 1 or 3, that represents a possible destination for a Bitcoin payment. Addresses can be generated at no cost by any user of Bitcoin. For example, using Bitcoin-Qt, one can click "New Address" and be assigned an address. It is also possible to get a Bitcoin address using an account at an exchange or online wallet service.

An example of a Bitcoin address is 3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy.

Source: https://en.bitcoin.it/wiki/Address

[S4VV4S]

Like the title says, I thought that all Bitcoin addresses started with a 1 until I saw this: http://bitcoinchain.com/block_explorer/catalog/338378

A Bitcoin address, or simply address, is an identifier of 27-34 alphanumeric characters, beginning with the number 1 or 3, that represents a possible destination for a Bitcoin payment. Addresses can be generated at no cost by any user of Bitcoin. For example, using Bitcoin-Qt, one can click "New Address" and be assigned an address. It is also possible to get a Bitcoin address using an account at an exchange or online wallet service.

An example of a Bitcoin address is 3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy.

Source: https://en.bitcoin.it/wiki/Address

OK, but this one starts with 2: http://bitcoinchain.com/block_explorer/a/2mcBp5h1U41ARYXZ6EywGeyQcVdhYP7dFob

[Meuh6879]

other number is explain here : http://www.youtube.com/watch?v=OSA1pwlaypc

[S4VV4S]

other number is explain here : http://www.youtube.com/watch?v=OSA1pwlaypc

And can someone explain why an address starts with a 2?

[teukon]

The first character of an address is roughly the "type" of the address.  Technically, if you unpack an address from its base58 form, the first byte will be the "version byte".

https://en.bitcoin.it/wiki/List_of_address_prefixes

And can someone explain why an address starts with a 2?

Testnet script hash.

[escrow.ms]

other number is explain here : http://www.youtube.com/watch?v=OSA1pwlaypc

And can someone explain why an address starts with a 2?

Look here https://bitcointalk.org/index.php?topic=110051.msg1208997#msg1208997

There is a big list of these kind of address
https://gist.github.com/sigmike/9295530

It doesn't matters which address you check, all will show same balance and same transaction id's.

[safeminer]

It is a multi-signature address

Normal Public Key   1xxxxxx
Multi-Sig Public Key 3xxxxxx
Private Key            5xxxxxx



Hope that helps

[pandit]

It is a multi-signature address

Normal Public Key   1xxxxxx
Multi-Sig Public Key 3xxxxxx
Private Key            5xxxxxx



Hope that helps

sorry   what is Multi-Sig public key ?  multiple private keys for same public key

[S4VV4S]

Are the addresses that start with anything other than 1 or 3 valid?
And how are they created?
Vanity?

[jparsley]

Script addresses start with 3