April 20th, 2013 marked the 6th annual Record Store Day, a global celebration of independent record stores for which record labels produce special limited edition releases and reissues and distribute them for release on this date. On this date, twitter user @imnopandabear found a mysterious Boards of Canada 12" vinyl in Music, NYC. This vinyl provided one of six messages forming part of a 36-digit key. Following this event, more messages have been broadcast over different media. Despite initial skepticism, the AtalantaFugiens YouTube account (known to be official) updated the annotation on its Julie And Candy live video to briefly show the key format at time 4:19, confirming the legitimacy of the record.
Below the table of contents you can find a detailed flow of events. For a brief summary of the events you can browse the following resources:
The term key refers to the entire 36-digit code. The term message refers to a broadcast which provides any number of digits from the key. The term message position refers to the position of the message within the key.
It is unclear at this stage whether the key represents a mathematical challenge, or an encrypted ciphertext, or a key for decoding some as-yet-unknown ciphertext. If it is ciphertext or an encryption key, then information theory and Shannon's noisy coding theorem tells us that it is not useful information until the full message and its related key/cipher is known.
The 6 digit message is taken to fit into the marked six positions in the title.
The XXXXXX pressed on each album cover may have additional significance. X is the 24th letter of the alphabet. Numerically, XXXXXX would be transcribed as 24-24-24-24-24-24. When 2 and 4 are added, the sum is 6. Therefore XXXXXX becomes 666666. Six 6's equals 36, the numerical sequence that is found on each Aquarius release. The sum of all numbers from 1 to 36 is 666.
Hey, so i recently posted something on facebook about a record I got today at Other Music, its a new BoC release from warp, dated 2013. The record is single sided, and has about a roughly 20 second clip of a very boards-of-canada-ey voice with synth backing saying a six digit number once, and then cuts out.
on the front of the record Boards of Canada is written and beneath that a series of -'s, /'s, and X's, are arranged as follows
Clearly I have one of six similar Boards of Canada records released today and distributed "randomly" around the world (Other Music said they received the record with no word / acknowledgement of its existence, it was just there in a shipment they received). I think that if all of the numbers are gathered and arranged in a proper order, we might be able to figure something out, so we just need the other 5 people who found the record (or maybe they haven't been found yet) to reveal their numbers and where they fit in the sequence, and then of course, have to decipher what the numbers together mean.
I don't work for warp, and am just a college kid who idolizes this group
I want to figure this out
Two weeks after finding the record that gave the first clue about Boards of Canada's new album, a US student is putting the disc up for auction. Pleading for money to "help me start out on my own", the seller has already attracted drawn bids of $4,000 (£2,500)." . Bidding for the record ended unsuccessfully on May 6th, due to non-paying bidders. The record was then sold outside of ebay for $900 then later sold to an anonymous buyer from the UK for $1150 
5:44 AM - 23 Apr 13 "Here's the moment the @RoughTrade East Boards of Canada record was purchased... pic.twitter.com/uQrjfDlxrX"
5:55 AM - 23 Apr 13 "And the lovely customer allowed us to play it once over the @RoughTrade East stereo... pic.twitter.com/uPtnSVTFSl" 
gabrielconry from WATMM messageboard shared this bit of additional info.
The Rough Trade BoC single was put out on Saturday (Record Store Day) night by Noreen, the manager, who couldn't tell anyone else about it. It was deliberately misfiled under Techno and placed backwards as well. It then had to be removed at some point, as 'somebody' needed to get a photo of the customer buying it (and BoC it up with a blank face), so it was put back into the racks on Tuesday morning, waiting for someone to chance upon it. As they did.
There was a yellow post-it sticker on the record saying sell me. It was sold to the first person who came in after it arrived. The barcode is for a “music has the right to children” CD so we sold it for £7.99. I’d actually had a conversation with the young lad who bought it about Warp (after he had bought an Aphex Twin 12″ and then a Grizzly Bear album the next week) about how Warp had kindly done a poster campaign in Edinburgh before Christmas tagging Avalanche so it seemed appropriate.
On the evening (GMT) of 23rd April, Zane Lowe played the sixth message of the key on BBC Radio One. Upon consulting the show's playlist on the BBC website, it lists a track by Artist: Unknown, Title: ------ / ------ / ------ / ------ / ------ / XXXXXX. The message was 519225.
On the evening (EST) of the same day, NPR played another message on All Songs Considered. This message was 699742. The title is unknown and therefore the message position has not been confirmed, although when future messages are broadcast then this can be deduced.
The first part of the strings links to two Soundcloud uploads called ∑, Greek uppercase Sigma, which means SUM in maths, with album art showing a signal mixer which sums two inputs. By summing the two Soundcloud files he retrieved the clue: 628315
6:19 AM - 28 Apr 13 "Hm, did @adultswim and #toonami just run a new BOARDS OF CANADA thing?? ...yep, we did. :)" 
The Toonami tumblr also made the following cryptic announcement at Fri April 26th, 2013 at 1:37pm :
ANNOUNCEMENT ABOUT TOMORROW NIGHT!
April 27th means A new TOM, a new Absolution, and the resurrection of IGPX @2am! We’ve also got a new game review, a special goodie from one of our friends (that’s all the hints you get), AND another special surprise. Tune in at the beginning of the night, and keep ooooon watching!
We love you!
xoxo, The Toonami Crew
Posted: Fri April 26th, 2013 at 1:37pm
Tagged: toonami adult swim igpx
Combining all the codes together, without slashes, is the correct password for the terminal on the site. This leads us to a video which reveals the album's title, Tomorrow's Harvest, and a release date of June 10.