Bitcoin XT
Initial release August 15, 2015
Stable release
Release I / 22 April 2018;
Repository https://github.com/bitcoinxt/bitcoinxt

On June 10, 2014 Mike Hearn published a Bitcoin Improvement Proposal (BIP 64), calling for the addition of "a small P2P protocol extension that performs UTXO lookups given a set of outpoints."[5] On December 27, 2014 Hearn released version 0.10 of the client, with the BIP 64 changes.[6]

On June 22, 2015, Gavin Andresen published BIP 101 calling for an increase in the maximum block size. The changes would activate a fork allowing eight MB blocks (doubling in size every two years) once 75% of a stretch of 1,000 mined blocks is achieved after the beginning of 2016.[7] The new maximum transaction rate under XT would have been 24 transactions per second.[8]

On August 6, 2015 Andresen's BIP101 proposal was merged into the XT codebase.[9][10] Bip 101 was reverted[11] and the 2-MB block size bump of Bitcoin Classic was applied instead.


https://en.wikipedia.org/wiki/Bitcoin_XT

Satoshi’s Final Email to Gavin Andresen
April 26, 2011

https://nakamotostudies.org/emails/satoshis-final-email-to-gavin-andresen/

DUP HASH160 ... EQUALVERIFY CHECKSIG
June 17, 2010, 11:38:31 AM

So I'm writing a little tool that dissects the Bitcoin wallet.dat, mainly because I want to understand better exactly how Bitcoin works.

And I see that the outputs of transactions have a value (number of bitcoins) and a bunch of bytes that are run through the little Forth-like scripting language built in to bitcoin.  E.g.:
['TxOut: value: 100.00 Script: DUP HASH160 6fad...ab90 EQUALVERIFY CHECKSIG']

First: it make me a little nervous that bitcoin has a scripting language in it, even though it is a really simple scripting language (no loops, no pointers, nothing but math and crypto).  It makes me nervous because it is more complicated, and complication is the enemy of security.  It also makes it harder to create a second, compatible implementation.  But I think I can get over that.

Looking at the code, new transactions are verified by pushing the signature an then public key on the interpreter's stack and then running the TxOut script (did I get that right?).

Could I write code to create transactions with any valid script in the TxOut?
E.g. could I create a TxOut with a script of:   OP_2DROP OP_TRUE
... to create a coin that could be spent by anybody?

And is flexibility in the types of coins created the reason it is coded this way?

How often do you get the chance to work on a potentially world-changing project?

Be very wary of relying on JavaScript for security on sites such as blockchain.info and brainwallet.org. The site can change the JavaScript at any time unless you take unusual precautions, and browsers are not generally known for their airtight security.

Gavin

https://bitcointalk.org/index.php?topic=195.msg1611#msg1611

Satoshi
"I believe Craig Steven Wright is the person who invented Bitcoin"
MAY 2, 2016

http://gavinandresen.ninja/satoshi

From mid-2010 until April-2014, Gavin Andresen maintained control of the Bitcoin Core GitHub repository and was considered Bitcoin’s lead developer. On April 8, 2014, Andresen stepped down and van der Laan agreed to take over as Lead Maintainer of the Bitcoin repo. His salary is paid by MIT’s Digital Currency Initiative, where he works on Bitcoin development with Andresen and Cory Fields
https://www.weusecoins.com/wladimir-van-der-laan/

"No estaba seguro, y todavía no estoy seguro de cómo está involucrado Gavin en esto. Ya no es probable que haya sido hackeado, pero al menos está confundido. Cuando vimos la publicación del blog convencido de que encontró a Satoshi, lo más prudente era revocar su propiedad de la organización "bitcoin" en github, bajo la cual se encuentra el repositorio de Bitcoin Core de inmediato".

2016/05/06/
Wladimir J. van der Laan
laanwj
https://laanwj.github.io/2016/05/06/hostility-scams-and-moving-forward.html

Ver "An evening with Gavin Andresen (Bitcoin Foundation) - San Francisco Bitcoin Meetup (HD) (Dec 2014)" en YouTube
https://youtu.be/07B-p9hSJT8

Ver "The Bitcoin Show: Special Bitcoin Conference Coverage: Gavin Andresen - 08/20/2011" en YouTube
https://youtu.be/0ljx4bbJrYE

Ver "Making Money- Gavin Andresen @ Ignite Amherst" en YouTube
https://youtu.be/koIq58UoNfE

Ver "BITCÓIN: La Moneda Del Futuro (V.O.S.)" en YouTube
https://youtu.be/B9nCgyquSqA

Es probable que lleves poco tiempo en la comunidad cripto y no conozcas bien a Gavin Andresen, a quien Satoshi dejo a cargo del desarrollo del software, cuando se retiró allá por el 2011, creo, te podrán contar muchas cosas de él pero ésta imagen en su propia casa en el minuto 22 de la película The Rise and Rise of bitcoin, es algo que no le he visto hacer a ningún miembro relevante de la comunidad, la naturalidad y transparencia con la que enseña el lugar donde vive es algo que para mi lo convierte en ÚNICO , su franqueza y esfuerzo por explicar ésta tecnología lo hacen un símbolo de lo que le escuché decir muchas veces en esa época y que rara vez escucho ahora: "Bitcoin ha venido, para hacer un mundo mejor"

Recuerda minuto 22

'Bitcoin creator': I do not have the courage
Rory Cellan-Jones
Technology correspondent
5 May 2016
https://www.bbc.com/news/technology-36213588



"On Monday, the BBC gave extensive coverage to Craig Wright's claims that he is Satoshi Nakamoto, the creator of Bitcoin. The following day, as many in the cryptographic community tore into his claims, he promised further "extraordinary proof".

But in the last 24 hours, he has first initiated an experiment designed to show that he does possess Satoshi's cryptographic keys, then done an about-turn with a blog saying he "does not have the courage" to carry this through.

I have always stressed that it was his endorsement by Jon Matonis and Gavin Andresen from the Bitcoin Foundation that we found compelling. But now they - and I - have been involved in this failed experiment, which is bound to raise fresh doubts.

They sent me a draft blog in which he outlined a scheme that would see Matonis, Andresen and the BBC all send small amounts of Bitcoin to the address used in the first ever transaction. Then he would send it back, in what would be the first outgoing transactions from the block since January 2009

Eighteen hours later we are still waiting for the payments to be made - and now Wright's new blog says that is not going to happen.

I have relied throughout on the expertise of Matonis and Andresen. As of this moment, neither has withdrawn their original statements of support for Wright's case."

Sigo colgando documentos en la blockchain de textos, que creo que son importantes conservar por mucho tiempo.

Satoshi
2 de mayo de 2016
Blog personal de Gavin Andresen, Ex Científico Jefe en la Fundación Bitcoin.

https://www.bitpaste.app/tx/d038a94dc19f1d91ecd36d2da245756012df5ef8409535a0f193e0e28c3cecba

Gavin Andresen acceso revocado en GitHub
JP Buntinx
2 de mayo de 2016


"Aunque pueden ser una cierta verdad a las cuentas sociales de Gavin Andresen que están siendo hackeadas, bien podría ser otra táctica de uno de los miembros más destacados de Bitcoin para desacreditar la criptomoneda popular. En este punto, hay mucha especulación en curso. en este momento, no debe haber acusaciones ni acusaciones hasta que se revele la verdad ".


Cualquiera que sea la verdad, los miembros de Bitcoin Core han revocado el acceso de compromiso que Gavin Andresen tenía para este proyecto en GitHub. Hay una preocupación legítima por parte de otros desarrolladores de Bitcoin Core en cuanto a si Gavin se ha convertido o no en el blanco de un gran ataque, o si no, qué otra cosa podría estar sucediendo tras bambalinas.

https://themerkle.com/gavin-andresen-github-commit-access-revoked/