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| # Bitcoin y otros Protocolos | |
| > <sub>* [https://www.bitcoin.org/](http://www.bitcoin.org/) | |
| > <sub>* [https://www.bitcoinclassic.org](https://www.bitcoinclassic.org) | |
| > <sub>* [https://www.bitcoincore.org](https://www.bitcoincore.org) | |
| > <sub>* [https://ethereum.org](https://ethereum.org) | |
| > <sub>* [https://cryptonote.org/](https://cryptonote.org/) | |
| # Pasarelas | |
| > <sub>* Coinbase.com | |
| > <sub>* Bitpay.com | |
| > <sub>* [https://plutus.it/how-it-works](https://plutus.it/how-it-works) | |
| > * Permite comprar en cualquier sitio con Bitcoins usando la rede de Ethereum. Envíar bitcoins a su wallet y esta hace intercambio por dinero en Exchanges. | |
| > * Primer hacen un contrato inteligente con ethereum para la operación, la compra queda asegurada así. El comprador envía el dinero a la tarjeta del cliente (Plutus) y con ella ya puede comprar. | |
| > * La compra es a través del sistema contactless usando la App del móvil y NFC. | |
| > * Ver documento técnico: [https://plutus.it/assets/Plutus.it-White-Paper-v1.0.pdf](https://plutus.it/assets/Plutus.it-White-Paper-v1.0.pdf) | |
| > <sub>* [https://purse.io/merchants/](https://purse.io/merchants/) | |
| > * Interesante para ver modelo de negocio y precios | |
| > <sub>* [https://cripto-pay.com/](https://cripto-pay.com/) | |
| > * Español, Ex-Yuzzer Víctor García de Madrid. Aceptan también Dogecoin. Pasarela en el Campus Madrid | |
| Wallets | |
| > <sub>* Multibit.org | |
| > <sub>* Electrum.org | |
| > <sub>* Coinbase.com | |
| > <sub>* Bitgo.com | |
| > <sub>* Greenaddress.it | |
| > <sub>* Copay.io | |
| > <sub>* Blocktrail.com | |
| > <sub>* [https://www.coinwallet.co/closing](https://www.coinwallet.co/closing) | |
| # Desarrollo | |
| > <sub>* [coinb Multisig](https://coinb.in/multisig/) | |
| > <sub>* Stackoverflow de Bitcoin: bitcoin.stackeexchange.com | |
| > * ¿Por qué al enviar mi saldo disponible está a cero? [http://bitcoin.stackexchange.com/questions/4560/after-sending-some-bitcoins-why-do-i-have-zero-available-to-spend-when-i-clearl](http://bitcoin.stackexchange.com/questions/4560/after-sending-some-bitcoins-why-do-i-have-zero-available-to-spend-when-i-clearl) | |
| > * Estaría bien añadir en el apartado de Ayuda o FAQ una explicacińo a los clientes: | |
| > * [https://multibit.org/en/help/v0.5/help_availableToSpend.html](https://multibit.org/en/help/v0.5/help_availableToSpend.html) | |
| > <sub>What does "Available to spend" mean ? | |
| > <sub>When someone sends you bitcoin you receive a notification within a few seconds. You cannot however spend this money immediately. The computers in the bitcoin network group transactions together and confirm them in 'blocks'. These are produced on average every ten minutes. Once a block is produced with your transaction in it the bitcoin is then available to spend. You can see this on the transactions screen once the status icon is no longer empty. | |
| > <sub>Also, when you send a payment to someone, you often end up being sent change back. This is like giving someone a 'twenty' and getting 'ten' in return in a shop. Change is sent back to you when the next block is produced and until then you cannot spend the change. | |
| > <sub>The total balance shown (the large number next to the gold coins) is the total amount of bitcoin you have in your wallet INCLUDING unconfirmed receipts and your change. The amount 'Available to spend' is the amount in your wallet that is confirmed and not involved in a current spend. At any given moment, you can only spend up to the 'Available to spend' amount. | |
| > <sub>* Segregated Witness | |
| > * Beneficios: [https://bitcoincore.org/en/2016/01/26/segwit-benefits/](https://bitcoincore.org/en/2016/01/26/segwit-benefits/) | |
| > * Increased security for multisig via pay-to-script-hash (P2SH) | |
| > * Reducing UTXO growth | |
| > * La lista de UnspentTransaction cada vez aumenta más (los ahorros de la gente) y se guarda en memoria. | |
| > * Ver: [http://statoshi.info/dashboard/db/unspent-transaction-output-set](http://statoshi.info/dashboard/db/unspent-transaction-output-set) | |
| > * Efficiency gains when not verifying signatures | |
| > * Compact fraud proofs | |
| > * Block capacity/size increase | |
| > * Al ocupar menos espacio equivaldría a bloques de hasta 2MB actuales. | |
| > * Moving towards a single combined block limit | |
| > * El tamaño de bloque tiene un límite en espacio (1MB) y un máximo de 20.000 comprobaciones de firmas. ¿Cómo ajustar para que quepan todas las transacciones?, ¿cuál es cojer si alguna sobrepasa el límite? Problema Knapsack ( https://en.wikipedia.org/wiki/Knapsack_problem). SegWit no puede solucionar este problema pero podría hacer que no vaya a peor combinando una limitación de los datos de SegWit en lugar de aplicar un único límite a la suma de los UTXO, permitiendo limitar a la vez ambos como una única entidad fusionada. | |
| # Librerías | |
| > <sub>* **[https://bitcoinj.github.io/](https://bitcoinj.github.io/)** | |
| > <sub>* **[https://bitcoinjs.org](https://bitcoinjs.org)** | |
| > <sub>* [https://bitcore.io](https://bitcore.io) | |
| > <sub>* [https://en.bitcoin.it/wiki/API_reference_%28JSON-RPC%29](https://en.bitcoin.it/wiki/API_reference_%28JSON-RPC%29) | |
| > <sub>* [https://en.bitcoin.it/wiki/Bitcoin-JSON-RPC-Client](https://en.bitcoin.it/wiki/Bitcoin-JSON-RPC-Client) | |
| > <sub>* [https://github.com/johannbarbie/BitcoindClient4J](https://github.com/johannbarbie/BitcoindClient4J) | |
| > <sub>* Ejemplos para JSON-RPC: [http://www.ariannasimpson.com/blog/from-bitcoind-to-bitgod-a-look-at-the-original-bitcoin-client-an](http://www.ariannasimpson.com/blog/from-bitcoind-to-bitgod-a-look-at-the-original-bitcoin-client-an) | |
| > <sub>* Buena implementación [https://github.com/priiduneemre/btcd-cli4j](https://github.com/priiduneemre/btcd-cli4j) | |
| > <sub>* Simple JSON-RPC sin dependencias: [https://bitbucket.org/azazar/bitcoin-json-rpc-client/src](https://bitbucket.org/azazar/bitcoin-json-rpc-client/src) | |
| # APIs | |
| > <sub>* Cosigner: Blockchain Agnistic Multi-Signature API Gateway: | |
| > * [https://github.com/Braveno](https://github.com/Braveno) | |
| > * [http://www.braveno.com/](http://www.braveno.com/) | |
| > <sub>* Alternativa a Bitcoind de BitGo: [https://github.com/BitGo/bitgod](https://github.com/BitGo/bitgod) | |
| > <sub>* Calcular comisión: | |
| > * 21.co: [https://medium.com/@21/realtime-bitcoin-transaction-fees-at-bitcoinfees-21-co-d002e3450024](https://medium.com/@21/realtime-bitcoin-transaction-fees-at-bitcoinfees-21-co-d002e3450024) | |
| > * [https://bitcoinfees.21.co/api/v1/fees/recommended](https://bitcoinfees.21.co/api/v1/fees/recommended) | |
| > <sub>{"fastestFee":50,"halfHourFee":40,"hourFee":20} | |
| > * https://bitcoinfees.21.co/api/v1/fees/list | |
| > <sub>* Percios del mercado: | |
| > * [https://blockchain.info/api/exchange_rates_api](https://blockchain.info/api/exchange_rates_api) | |
| > * [http://coinmarketcap-nexuist.rhcloud.com/](http://coinmarketcap-nexuist.rhcloud.com/) | |
| > <sub>* Chart and Stadistics | |
| > * [https://blockchain.info/api/charts_api](https://blockchain.info/api/charts_api) | |
| > <sub>* Exchanges | |
| > * [https://poloniex.com/support/api/](https://poloniex.com/support/api/) | |
| > * [https://www.kraken.com/help/api](https://www.kraken.com/help/api) | |
| > * [https://gatecoin.com/api](https://gatecoin.com/api) | |
| > * [https://www.bitfinex.com/pages/api](https://www.bitfinex.com/pages/api) | |
| > * [https://developers.coinbase.com/docs/exchange/](https://developers.coinbase.com/docs/exchange/) | |
| > * [https://www.bitstamp.net/api/](https://www.bitstamp.net/api/) | |
| > * [https://bitflyer.jp/en/api](https://bitflyer.jp/en/api) | |
| > * [https://bittrex.com/Home/Api](https://bittrex.com/Home/Api) | |
| # Mapas | |
| > <sub>* [http://cryptomaps.org/](http://cryptomaps.org/) | |
| > <sub>* [http://coinmap.org/](http://coinmap.org/welcome/) | |
| > <sub>* [http://www.fiatleak.com/](http://www.fiatleak.com/) | |
| # Debates desarrollo y precios | |
| > <sub>* Bitcoin.consider.it | |
| > * Votación de diferentes propuestas para solucionar el problema del tamaño de bloque | |
| > <sub>* [Why July 10 will determine cryptocurrency's future, illustrated with nice charts](http://forums.prohashing.com/viewtopic.php?f=11&t=782#p2944) | |
| > * [http://forums.prohashing.com/viewtopic.php?f=11&t=782](http://forums.prohashing.com/viewtopic.php?f=11&t=782) | |
| > * Opinión sobre porqué en poco tiempo será importante el futuro de Bitcoin, o no, con el lanzamiento estable de OpenBazaar (ebay descentralizado) o la implantación de la mejora Segregated Witness (Trestigos Segregados). Esta última funcionalidad supone un coste caro de desarrollo, en contrapartida hace que las transacciones ocupen menos (hasta la mitad si son **multifirma**) haciendo que sean más baratas y además solucionando; en parte; el problema del tamaño de bloque. | |
| # Artículos de Blogs | |
| > <sub>* **[Elbitcoin.org](http://elbitcoin.org/)** | |
| > <sub>* **[https://www.oroyfinanzas.com/bitcoin/](https://www.oroyfinanzas.com/bitcoin/)** | |
| > <sub>* **[http://www.coindesk.com/the-9-mistakes-i-made-when-bringing-blockchain-to-my-startup/](http://www.coindesk.com/the-9-mistakes-i-made-when-bringing-blockchain-to-my-startup/)** | |
| > <sub>* [http://www.coindesk.com/information/how-to-store-your-bitcoins/](http://www.coindesk.com/information/how-to-store-your-bitcoins/) | |
| > <sub>* [http://sobrebitcoin.com/](http://sobrebitcoin.com/) | |
| > <sub>* [https://blog.bitaccess.co/bitcoin-users-reveal-more-private-information-than-they-know/](https://blog.bitaccess.co/bitcoin-users-reveal-more-private-information-than-they-know/) | |
| > <sub>* [http://www.coindesk.com/the-rise-of-the-cypherpunks/](http://www.coindesk.com/the-rise-of-the-cypherpunks/) | |
| # Foros | |
| > <sub>* [https://bitcointalk.org/index.php?topic=672721.0](https://bitcointalk.org/index.php?topic=672721.0) | |
| > <sub>* [https://litecointalk.org/index.php/topic,2924.msg44380.html](https://litecointalk.org/index.php/topic,2924.msg44380.html#msg44380) | |
| > <sub>* [https://forum.ethereum.org](https://forum.ethereum.org) | |
| # Exchanges | |
| > <sub>* [https://www.coinbase.com/](https://www.coinbase.com/) | |
| > <sub>* [https://www.bitstamp.net/](https://www.bitstamp.net/) | |
| > <sub>* [https://www.poloniex.com/](https://www.poloniex.com/) | |
| > <sub>* [https://www.cryptsy.com/](https://www.cryptsy.com/) | |
| > <sub>* [https://www.kraken.com/](https://www.kraken.com/) | |
| > <sub>* [https://btc-e.com/](https://btc-e.com/) | |
| > <sub>* [https://www.okcoin.com/](https://www.okcoin.com/) | |
| > <sub>* [https://btcchina.com/](https://btcchina.com/) | |
| > <sub>* [https://bittrex.com/](https://bittrex.com/) | |
| Información de cotización de mercados | |
| > <sub>* [http://coinmarketcap.com/](http://coinmarketcap.com/) | |
| > <sub>* [https://cryptowat.ch/poloniex/ethbtc/5m](https://cryptowat.ch/poloniex/ethbtc/5m) | |
| > <sub>* [https://cryptrader.com](https://cryptrader.com) | |
| > * Ofrece poder llevar un registro del saldo de direcciones que indiques | |
| # Tutoriales | |
| > <sub>* BBVA, ¿Cómo utilizar una moneda digital? [videographic]: [https://www.youtube.com/watch?v=UpU9ozldiOY](https://www.youtube.com/watch?v=UpU9ozldiOY) | |
| # Minería | |
| > <sub>* [http://www.coinwarz.com](http://www.coinwarz.com) | |
| > <sub>* [https://www.whattomine.com/](https://www.whattomine.com/) | |
| > <sub>* [http://dustcoin.com/](http://dustcoin.com/) | |
| > <sub>* [http://www.rigwarz.com/](http://www.rigwarz.com/) | |
| # Repositorios | |
| > <sub>* [https://github.com/bitcoin/bitcoin](https://github.com/bitcoin/bitcoin) | |
| > <sub>* [https://github.com/Coinffeine/coinffeine](https://github.com/Coinffeine/coinffeine) | |
| > <sub>* [https://github.com/darkwallet/darkmarket](https://github.com/darkwallet/darkmarket) | |
| > <sub>* [https://github.com/bitcoinj/bitcoinj](https://github.com/bitcoinj/bitcoinj) | |
| # AltCoins | |
| > <sub>* Ethereum | |
| > <sub>* Litecoin | |
| > <sub>* Dogecoin | |
| > <sub>* Dash | |
| > <sub>* NameCoin | |
| > <sub>* Ripple | |
| > <sub>* Next | |
| > <sub>* Monero | |
| > <sub>* Pivx | |
| > <sub>* Waves | |
| > <sub>* [https://www.altcoincalendar.info/](https://www.altcoincalendar.info/) | |
| # Miscelanea | |
| > <sub>* [http://bitbonkers.com/](http://bitbonkers.com/) | |
| > * WebGL que muestra de forma 3D las transacciones en tiempo real. | |
| # Documentales | |
| > <sub>* [http://bitcoinfilm.org/](http://bitcoinfilm.org/) | |
| > <sub>* The Rise and Rise of Bitcoin [http://bitcoindoc.com/](http://bitcoindoc.com/) | |
| > <sub>* [http://www.rtve.es/alacarta/videos/la-tarde-en-24-horas/bitcoin-moneda-virtual-alza/1758107/](http://www.rtve.es/alacarta/videos/la-tarde-en-24-horas/bitcoin-moneda-virtual-alza/1758107/) | |
| > <sub>* Bitcoin: The End of Money as you know it | |
| > <sub>* Banking on Bitcoin (disponible en Netflix) | |
| > <sub>* The Bitcoin Gospel (https://www.youtube.com/watch?v=2kyJ-3O0Jqo) | |
| **Teoría del Dinero** | |
| > <sub>* ¿Por qué valoramos el oro? [http://www.bbc.com/mundo/noticias/2013/12/131212_oro_valor_finde](http://www.bbc.com/mundo/noticias/2013/12/131212_oro_valor_finde) | |
| > <sub>¿Qué nos dice este proceso de eliminación elemental sobre qué hace una buena moneda? Primero, que no tiene que tener ningún valor intrínseco. **Una moneda sólo tiene valor porque nosotros, como sociedad, decidimos que lo tiene.** | |
| > <sub>**Startups** | |
| > <sub>* Chroma.fund [https://chroma.fund](https://chroma.fund) | |
| > * Chroma's blockchain-based investment platform allow financial institutions to capitalize on new financial regulations - especially when dealing with investments in privately held companies. And these investments are newly tradable on private markets. Together, the network of financial institutions using Chroma's platform create an aggregated pool of securitized investments that help grow the small business and startup economy. | |
| > <sub>* ChangeTip (cerrada) | |
| > * Basada en enviar propias a través de redes sociales | |
| > <sub>* OpenBazaar | |
| > * Market de compra-venta similar a Ebay y Amazon pero descentralizado con pagos con Bitcoin usando la API de onename.com. Se cree que repercutirá en la cotización positiva de Bitcoin | |
| > * [https://www.oroyfinanzas.com/2016/04/openbazaar-cuelga-cartel-abierto-estan-contados-dias-gloria-ebay-amazon/](https://www.oroyfinanzas.com/2016/04/openbazaar-cuelga-cartel-abierto-estan-contados-dias-gloria-ebay-amazon/) | |
| > <sub>* Bazaarbay.org | |
| > * Buscador de compras de OpenBazaar | |
| > <sub>* BlockStream | |
| > * Startup con algunos de los desarrolladores de Bitcoin Core y Adam Back (creador del algoritmos PoW HashCash en 1997) Artículo[https://www.oroyfinanzas.com/2016/03/startups-bitcoin-blockstream-itbit-diez-nuevos-miembros-hyperledger-blockchain-project/](https://www.oroyfinanzas.com/2016/03/startups-bitcoin-blockstream-itbit-diez-nuevos-miembros-hyperledger-blockchain-project/) | |
| > <sub>* CoinSpark | |
| > * [http://coinspark.org/](http://coinspark.org/) | |
| > * Notarize important emails on the blockchain. Create assent and contract in minutes. Transfer assets for a fixed low BTC fee. Combine messages and assets in Tx. |
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