[Sipwitch-devel] Telephone number mapping via blockchain

[Rene Bartsch]

Hi,

the Namecoin developers have tuned Bitcoin to allow namespaces 
(https://wiki.namecoin.info/index.php?title=Namespaces) for domains in a 
blockchain.
I want to suggest to use a blockchain for mapping telephone numbers to 
SIP-URIs by integrating libcoin (http://libcoin.github.com/libcoin/) 
into Sipwitch. That way Sipwitch gets a signed P2P-key-value-storage. As 
key I suggest a 12-digit E.164-compliant decimal number (which allows to 
request a 3-digit international dial-prefix from ITU for 
PSTN-to-SIP-gateways) and as value I suggest a 3-dimensional array:

Array dimensions:
1. Call sequence (absolute start time of Invite/Ring)
2. Call group
3. SIP-URI

Example:

{
    "0": [
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060"
    ],
    "60": [
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060",
        "sip:address@hidden<mydomain>:5060"
    ],
    "120": "sip:address@hidden<mydomain>:5060"
}


What do you think?

--
Best regards,

Rene Bartsch, B. Sc. Informatics