Blockchain Explorer - Search the Blockchain | BTC | ETH | BCH

[S] [USA-FL] 5 Canon lenses, EOS-1 Ds Mark II, accessories. EF 800mm, EF 70-200mm, Macro EF 180mm, TS-E 24mm, EF 17-40mm

My father in law loved photography. He bought essentially every camera and lens Canon offered back in the day. My wife inherited all of his photography equipment, but neither of us are as devoted to photography. We’re keeping some of the cameras and lenses (and the pelican cases they were kept in), but these items saw the least amount of use, so we’re hoping to find them a good home. I took a few pictures with each lens and the eos-1 to check functionality: all seemed ok, so I’m listing all of these as “good working condition”. If there’s a defect beyond normal cosmetic wear and tear, you may return it and I’ll refund you. All prices are based off of eBay sold items, but I’ll take offers.
Sorry, I took the pictures in this listing with a cellphone camera. I know that’s probably considered a sin on here.
First up for sale is the monster EF 800mm 1:5.6 L IS USM lens. Comes with original Canon case, connection cap, strap, shroud, and pull string bag for the shroud. https://i.imgur.com/dutrYtc.jpg https://i.imgur.com/F4FMsbs.jpg https://i.imgur.com/NqnTIju.jpg https://i.imgur.com/3CcdzbA.jpg https://i.imgur.com/s6Ph6qx.jpg
Asking price: $6500

Next is the Zoom Lens EF 70-200mm 1:2.8 L IS USM. Comes with a HOYA UV filter, both caps, and a tripod mount. https://i.imgur.com/XHCRBYM.jpg https://i.imgur.com/plGJ29H.jpg https://i.imgur.com/PTUpwlh.jpg https://i.imgur.com/Jm125wv.jpg
Asking price: $580 SOLD

Macro Lens EF 180mm 1:3.5 L Ultrasonic. Comes with both caps and tripod mount. https://i.imgur.com/gWicCvN.jpg https://i.imgur.com/42NUMfB.jpg https://i.imgur.com/WUZPTCA.jpg
Asking price: $550

Zoom Lens EF 17-40mm 1:4 L USM. Comes with a HOYA Ultra UV filter and both caps. https://i.imgur.com/HZtieMI.jpg https://i.imgur.com/yrOronP.jpg https://i.imgur.com/LV1wFgm.jpg https://i.imgur.com/60ULHq2.jpg
Asking price: $250 SOLD

TS-E 24mm 1:3.5 L tilt shift lens. I’ve read this one is kind of rare. Comes with Canon EW-75BII and both caps. https://i.imgur.com/nFuNujw.jpg https://i.imgur.com/onEGLNr.jpg https://i.imgur.com/RjUY4pW.jpg
Asking price: $450

Each lens except the 17-40mm one will come with its original booklet. https://i.imgur.com/sOvFa8l.jpg
Also for sale is a EOS-1 Ds Mark II body + accessories. Comes with strap, lens cap, Canon NC-E2 charger, two batteries NP-E3, shutter remote, and AC power kit (DC-E1). One of the batteries won’t charge and the other doesn’t last very long (~15 minutes depending on use). A quick google search shows you can still buy these batteries. https://i.imgur.com/kPkzn2w.jpg https://i.imgur.com/WiB2Zzb.jpg https://i.imgur.com/Jcb4lNO.jpg https://i.imgur.com/uZwgFp6.jpg https://i.imgur.com/pz89D69.jpg https://i.imgur.com/laVCvDY.jpg https://i.imgur.com/P1L6Q2x.jpg
Asking price: $300

I have all the serial numbers noted down in case of returns.
If I can’t find a buyer on here, I’ll list them on the spacecoast craigslist, then on eBay, unless anyone has any suggestions for forums I could list them on. While I haven’t sold anything on this subreddit, I have sold many things on /homelabsales, and I have ~500 100% feedback on eBay.
Prices do not include shipping. I prefer local pickup (32935, Melbourne), but I will ship pretty much anywhere, just ask for a quote. All shipping will include insurance. I’ll be flying up to east Tennessee Jan 2nd and driving back to Melbourne Florida on Jan 4th or 5th, so if you live on the way, I could potentially deliver some of these.
Payment via cash (or cashier’s check) in person will receive a 4% discount, PayPal goods and services otherwise. Not sure if I’m allowed to say this, but I’ll accept bitcoin for payment (I’ll remove this statement if mods request it).
submitted by alltheasimov to photomarket [link] [comments]

[S] [USA-FL] EOS-1 Ds Mark II, accessories. 3 Canon lenses: EF 800mm, Macro EF 180mm, TS-E 24mm. PRICES REDUCED

Reposting with reduced prices.
My father in law loved photography. He bought essentially every camera and lens Canon offered back in the day. My wife inherited all of his photography equipment, but neither of us are as devoted to photography. We’re keeping some of the cameras and lenses (and the pelican cases they were kept in), but these items saw the least amount of use, so we’re hoping to find them a good home. I took a few pictures with each lens and the eos-1 to check functionality: all seemed ok, so I’m listing all of these as “good working condition”. If there’s a defect beyond normal cosmetic wear and tear, you may return it and I’ll refund you. All prices are based off of eBay sold items, but I’ll take offers.
Sorry, I took the pictures in this listing with a cellphone camera. I know that’s probably considered a sin on here.
First up for sale is the monster EF 800mm 1:5.6 L IS USM lens. Comes with original Canon case, connection cap, strap, shroud, and pull string bag for the shroud. https://i.imgur.com/dutrYtc.jpg https://i.imgur.com/F4FMsbs.jpg https://i.imgur.com/NqnTIju.jpg https://i.imgur.com/3CcdzbA.jpg https://i.imgur.com/s6Ph6qx.jpg
Asking price: $6400
Macro Lens EF 180mm 1:3.5 L Ultrasonic. Comes with both caps and tripod mount. https://i.imgur.com/gWicCvN.jpg https://i.imgur.com/42NUMfB.jpg https://i.imgur.com/WUZPTCA.jpg
Asking price: $520 SOLD
TS-E 24mm 1:3.5 L tilt shift lens. I’ve read this one is kind of rare. Comes with Canon EW-75BII and both caps. https://i.imgur.com/nFuNujw.jpg https://i.imgur.com/onEGLNr.jpg https://i.imgur.com/RjUY4pW.jpg
Asking price: $425 SOLD
Each lens will come with its original booklet. https://i.imgur.com/sOvFa8l.jpg
Also for sale is a EOS-1 Ds Mark II body + accessories. Comes with strap, lens cap, Canon NC-E2 charger, two batteries NP-E3, shutter remote, and AC power kit (DC-E1). One of the batteries won’t charge and the other doesn’t last very long (~15 minutes depending on use). A quick google search shows you can still buy these batteries. https://i.imgur.com/kPkzn2w.jpg https://i.imgur.com/WiB2Zzb.jpg https://i.imgur.com/Jcb4lNO.jpg https://i.imgur.com/uZwgFp6.jpg https://i.imgur.com/pz89D69.jpg https://i.imgur.com/laVCvDY.jpg https://i.imgur.com/P1L6Q2x.jpg
Asking price: $280
I have all the serial numbers noted down in case of returns.
If I can’t find a buyer on here, I’ll list them on eBay. I just sold two lenses on this subreddit (see previous version of this post). I have ~500 100% feedback on eBay.
Prices do not include shipping. I prefer local pickup (32935, Melbourne), but I will ship pretty much anywhere, just ask for a quote. All shipping will include insurance.
Payment via cash (or cashier’s check) in person will receive a 4% discount, PayPal goods and services otherwise. Not sure if I’m allowed to say this, but I’ll accept bitcoin for payment (I’ll remove this statement if mods request it).
submitted by alltheasimov to photomarket [link] [comments]

Part 1. What is a Blockchain?

I really like the following definition of a blockchain from Don & Alex Tapscott, authors of Blockchain Revolution (2016).
“The blockchain is an incorruptible digital ledger of economic transactions that can be programmed to record not just financial transactions but virtually everything of value.
 
If the above definition is a bit much to digest all at once, my own basic definition of a blockchain is:
"A chronological public ledger of all past transactions that is VERY difficult to tamper with."
 
What these definitions mean, and what they foreshadow to us, are that the acts of: buying melons at a local farmers market, selling your home, registering your marriage, voting, borrowing money and paying it back, etc, are all possible TODAY by using (and trusting the tech behind) a blockchain.
 
How is this possible? It's actually a fairly simple explanation...When committing information into a blockchain, 7 Simple steps are taken. They are: 1. Request, 2. Broadcast, 3. Validate, 4. Verify, 5. Add to Block, 6. Add to Blockchain, 7. Completion
 
1. Request. Someone decides to Request a transaction. Matt wants to send Corrinne 1 Bitcoin.
 
2. Broadcast. The requested transaction is broadcast by Matt's computer, "HEY EVERYONE! Help me send 1 Bitcoin to Corrinne, here's the necessary info." Matt sends his Broadcast to everyone's computer connected to the blockchain through a Peer-to-Peer network. In this case Matt is only broadcasting to computers on the Bitcoin blockchain, also known as "Broadcasting to the Bitcoin Nodes."
 
3. Validate. The computer Matt is using to Broadcast puts information in his Request that is required by the Bitcoin Nodes before they can Validate his Request. Matt's computer has already done a Validation of his Request before Broadcasting, but the Bitcoin Nodes decide if he has followed the Rules for a Transaction when he self-validated. The Bitcoin Nodes re-check that Matt's Digital Signature is legitimate, and based off of his prior transactions, re-check that he has 1 Bitcoin to send. If Matt's Digital Signature is legitimate, and his Bitcoin address holds at least 1 Bitcoin, and Matt has followed the Rules for a Transaction, the Bitcoin Nodes consider his Request to be Valid.
  3a. Digital Signature definition: Providing the same function as signing a check, a Digital Signature mathematically proves the signee is a known sender (Authentication), that the sender cannot deny having sent the message (Non-Repudiation), and that the message was not altered in transit (Integrity). The Bitcoin blockchain uses your private key, your public key, and some fancy math to accomplish this.
  3b. Bitcoin Nodes definition: Computers running a program that connects them to the Bitcoin blockchain. In the use case of Validation they are only looking for transactions authorized by Matt's unique Digital Signature. However, these computers can also access the blockchain, create new Blocks, chain new Blocks onto the blockchain, and can look at any previous transactions. If Matt was bad and didn't have 1 Bitcoin at his address, the Bitcoin Nodes would know and his Request would stop here.
 
4. Verify. A transaction is Verified after a certain threshold of Bitcoin Nodes is reached who view Matt's Request as Valid. Verification can also be thought of as "The required amount of Trust between Matt and a single Bitcoin Node". As the number of Bitcoin Nodes viewing Matt's Request to be Valid increases, the amount of trust for Matt also increases. As time goes on and Matt's Request is repeatedly shown to be Valid, the chance that a single Bitcoin Node will believe Matt's Request is worth the effort (Time x Electricity) of being added into a new Block continues to go up until, finally, a single Bitcoin Node somewhere decides that Matt is trustworthy, and adds his Requested transaction into a new Block.
 
5. Add to a new Block. Once Matt's Request for a transaction is Verified, his Request is combined with other Verified transactions by a single Bitcoin Node to create a Block. A Block is merely a list of Verified transactions. Each Block holds a finite number of transactions before it is considered "full", after which a new Block must be created.
 
6. Add to the Blockchain. After a Block is filled to capacity, it must be added to the Blockchain. The chaining together of Blocks, in a way which is permanent and unalterable (under almost all conditions) is where Blockchain gets its name. This process involves SHA-256 hashing, Merkle trees, and other actions that require a lengthy explanation. The following is a simplified version of the process:  
Bitcoin Nodes race each other to solve a cryptographic puzzle that uses a LOT of computer resources (Time x Electricty). Whichever Bitcoin Node solves the puzzle first wins the right to chain the Block they created onto the existing Blockchain. Other Bitcoin Nodes will Verify (similar to Validating Matt's Request) that when the winning Bitcoin Node created this new Block, the Rules for creating a new Block were followed. If the Rules were followed, the new Block is mathematically chained onto the most recent Block to also meet this same criteria.
 
7. Transaction Complete! Matt's Request has now been irreversibly recorded into the Blockchain of Bitcoin. Corrinne's computer can now access the Blockchain and see this Completed transaction. In fact, every single person looking at the Bitcoin Blockchain can see that Matt now has 1 less Bitcoin and that Corrinne has 1 additional Bitcoin.
 
** This image has a visual explanation for the above outline. hold CTRL + scroll up on mouse wheel to zoom
 
A parting thought: I would be remiss to not mention that the process of Block creation and Block chaining is where this technology shows us how novel it truly is. Currently, the electricity consumed by those processes is more than N. Korea and quite a few small countries. Every day folks are finding newer, faster, and more efficient ways of bending this technology to benefit us all. It is an exciting time to be a part of what I believe will be another technological revolution. The daily lives of people the globe over will be significantly impacted by whatever we end up doing with blockchain technology.
 
Thanks for reading, and an extra thank you for seriously wanting to learn more about Blockchain Technology! Please comment below for further explanations, to get an answer on any questions you have, or just to correct me if you wanna be that person. Stay tuned for Parts 2-4.  
~Matt  
www.DenverCryptoGroup.com
submitted by artlimber to denvercryptogroup [link] [comments]

Passing the Bitcoin around the World (Starts Tonight!)

The goal here is to pass a transaction of Bitcoin around the world as quickly as possible. Now we have a few participates lined up, and I can see that a website and some support would make this much more fun.
Talking to folks, we might make it a "pass the hat" exercise to donate to a charity. Like to the Oklahoma Tornado disaster, or AIDs relief.
This particular exercise is going to go to some charity accepting BTC, to be decided in the comments. And to that end, people should pass the BTC along per the rules, and may make a separate donation directly if they wish.
You can read the original post for Passing Bitcoin here
The list so far:
To follow in real time:
I have set up an IRC channel #bitpass on Freenode. We will use the same hash (#bitpass) on twitter
submitted by alanX to Bitcoin [link] [comments]

Passing Bitcoin around the World: an Update

the origninal link. go there to get the rules and what we are going to do!
We will fire this off at 11:59 pm (23:59) this Friday, May 24, (Tomorrow!) central standard time (GMT-5).
The list is going to be dynamic. I will PM everyone today. If you don't respond, you are not going to be on the list. From that point, we are going to have to trust everyone to be paying attention.
When you get notification that you have been paid, wait for the first confirmation. Then you can send the transaction on to the next person in the list.
We are still needing more people. We have:
If you know anyone that is outside the US that might want to participate, forward information to me! If you have been on Reddit with an established account, then you can vouch for someone else!
I'd really like someone from Africa! Australia! China!
submitted by alanX to Bitcoin [link] [comments]

Bitcoin for Beginners Playlist: Intro to Bitcoin, Satoshi ... tech stuff - YouTube The Bitcoin News Show - YouTube

Bitcoin Magazine provides news, analysis, information, commentary and price data about Bitcoin through our website, podcasts, research, and events. The U.S. Marshals, the oldest law enforcement agency in the United States, is holding an auction for Bitcoins worth over $4 million this coming November. The cryptocurrency up for auction comes Bitcoin Transfer. The USMS will not transfer any bitcoins until it has confirmed receipt of purchase funds from the buyer. The USMS will not transfer bitcoins to an obscene public address, a public address apparently in a country restricted by the Office of Foreign Assets Control (OFAC), a public address apparently associated with terrorism US Marshals leak likely Bitcoin auction bidders, by mistake. Committing a common email blunder, the government agency accidentally reveals a list of potential bidders for Silk Road's seized bitcoins. Digital cryptocurrency Bitcoin was extremely underground when it was launched in 2008. The idea of a purely digital currency not based on fiat was thought of before, but Bitcoin was the first

[index] [10652] [15351] [9072] [7533] [5516] [29127] [5826] [11262] [2396] [3046]

Bitcoin for Beginners Playlist: Intro to Bitcoin, Satoshi ...

Sign in to like videos, comment, and subscribe. Sign in. This playlist is private. As Bitcoin's price climbs higher, I asked YOU to choose the top altcoins that have massive potential in 2020. You chose the coins. I gave you my thoughts! Today we discuss the best investment in ... Bitcoin Trading for Beginners (A Guide in Plain English) by ... 8:48. Identity Theft: How to Reduce Your Risk by Military Families Learning Network. 1:26:56. Statistics: The Superpower Every ... Tips for Small Bitcoin Miners to Maximize Their Advantages by Block Operations. 26:55. ... The Military Tech Show Spark by Spark. 22:48. Salvo (Military Tactic) by Simple History. #like #comment #subscribe #bitcoin #cryptocurrency #news #btc #ethereum #eth #cryptocurrency #litecoin #altcoin #altcoins #eos #forex #money #best #trading #bitcoinmining #invest #trader # ...

Flag Counter