Re: [bitcoin-dev] BIP Number Request: Addresses over Audio

From: Chris Riley <criley@gmail•com>
To: Daniel Hoffman <danielhoffman699@gmail•com>,
	 Bitcoin Protocol Discussion
	<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP Number Request: Addresses over Audio
Date: Tue, 9 Aug 2016 20:27:57 -0400	[thread overview]
Message-ID: <CAL5BAw2to-mx5YWCuks6n58Jy0+Q9qkJmUn92ddJ6g1GL1q=TA@mail.gmail.com> (raw)
In-Reply-To: <CAL9WuQXsbBJ0UwdS+o=UqJCcsebcPa9Ug5A=uNtc6Z+9CNEFPg@mail.gmail.com>

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Have you checked AudioModem out:
https://github.com/applidium/AudioModem

Or Chirp:
http://www.chirp.io/faq/

Or this Network World article (particularly the last portion on bitcoin):
http://www.networkworld.com/article/2956450/smartphones/sending-data-over-sound-revisited.html
and
http://www.networkworld.com/article/2689597/opensource-subnet/how-a-tv-network-is-being-used-to-move-financial-transactions.html

Instead of re-inventing the wheel, perhaps take a look at them.  Or at
least to see their design choices and rationale.

Cheers!

On Tue, Aug 9, 2016 at 7:06 PM, Daniel Hoffman via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> wrote:

> I have updated the GitHub a lot (changed tones to be less chirpy, fixed
> some smalls) and made a couple of samples (see attachment for MP3 and FLAC
> of both tone tables, first 16 then 4). Is this good enough to warrant an
> official BIP number? I haven't built a decoder yet, but it seems like the
> encoder is working properly (looked at Audacity, seems like it is working),
> and some people on reddit want to "allow for decoding experiments"
> <https://www.reddit.com/r/btc/comments/4wsn7v/bip_proposal_addresses_over_audio_thoughts/d69m3st>
>
> What suggestions do you all have for it?
>
> On Mon, Aug 8, 2016 at 8:50 PM, Daniel Hoffman <danielhoffman699@gmail•com
> > wrote:
>
>> It wouldn't be feasible in the vast majority of cases, but I can't think
>> of a reason why it can't be built into the standard.
>>
>> On Mon, Aug 8, 2016 at 5:59 PM, Trevin Hofmann via bitcoin-dev <
>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>
>>> Would it be feasible to transmit an entire BIP21 URI as audio? If you
>>> were to encode any extra information (such as amount), it would be useful
>>> to include a checksum for the entire message. This checksum could possibly
>>> be used instead of the checksum in the address.
>>>
>>> Trevin
>>>
>>> On Aug 8, 2016 3:06 PM, "Justin Newton via bitcoin-dev" <
>>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>>
>>>> Daniel,
>>>>    Thanks for proposing this.  I think this could have some useful use
>>>> cases as you state.  I was wondering what you would think to adding some
>>>> additional tones to optionally denote an amount (in satoshis?).
>>>>
>>>> (FYI, actual link is here:  https://github.com/Dako300/BIP )
>>>>
>>>> Justin
>>>>
>>>> On Mon, Aug 8, 2016 at 2:22 PM, Daniel Hoffman via bitcoin-dev <
>>>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>>>
>>>>> This is my BIP idea: a fast, robust, and standardized for representing
>>>>> Bitcoin addresses over audio. It takes the binary representation of the
>>>>> Bitcoin address (little endian), chops that up into 4 or 2 bit chunks
>>>>> (depending on type, 2 bit only for low quality audio like american
>>>>> telephone lines), and generates a tone based upon that value. This started
>>>>> because I wanted an easy way to donate to podcasts that I listen to, and
>>>>> having a Shazam-esque app (or a media player with this capability) that
>>>>> gives me an address automatically would be wonderful for both the consumer
>>>>> and producer. Comes with error correction built into the protocol
>>>>>
>>>>> You can see the full specification of the BIP on my GitHub page (
>>>>> https://github.com/Dako300/BIP-0153).
>>>>>
>>>>> _______________________________________________
>>>>> bitcoin-dev mailing list
>>>>> bitcoin-dev@lists•linuxfoundation.org
>>>>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Justin W. Newton
>>>> Founder/CEO
>>>> Netki, Inc.
>>>>
>>>> justin@netki•com
>>>> +1.818.261.4248
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>> _______________________________________________
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>>>
>>
>
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>

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