Apa Itu Bitcoin: Pengertian, Harga, dan Cara Kerjanya (2023)

Kompas.com - 09/12/2021, 13:10 WIB

Apa Itu Bitcoin: Pengertian, Harga, dan Cara Kerjanya (1)

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Bitcoin adalah mata uang kripto pertama yang memiliki nilai kapitalisasi paling besar(Sumber: Pixabay)

Penulis Nur Jamal Shaid

|

Editor Muhammad Idris

JAKARTA, KOMPAS.comBitcoin adalah salah satu istilah yang barangkali sudah tidak asing lagi. Banyak kalangan sudah mulai menjadikan bitcoin sebagai salah satu aset digitalnya. Lantas apa itu bitcoin?.

Bitcoin adalah cryptocurrency atau mata uang kripto pertama sekaligus menjadi yang paling populer. Harganya yang terus naik dari tahun ke tahun menjadikan bitcoin sebagai aset digital yang banyak diburu oleh banyak orang.

Pengertian bitcoin

Dikutip dari laman Investopedia, Kamis (9/12/2021), bitcoin adalah mata uang digital terdesentralisasi yang dibuat pada Januari 2009. Penemuan bitcoin adalah mengikuti gagasan yang ditetapkan dalam kertas putih oleh Satoshi Nakamoto (nama alias).

Bitcoin menawarkan janji biaya transaksi yang lebih rendah daripada mekanisme pembayaran online tradisional. Tidak seperti mata uang yang dikeluarkan bank sentral, bitcoin adalah dioperasikan oleh otoritas yang terdesentralisasi.

Baca juga: Rincian Harga Emas Hari Ini di Pegadaian, dari 0,5 Gram hingga 1 Kg

Bitcoin dikenal sebagai jenis cryptocurrency karena menggunakan kriptografi untuk menjaganya tetap aman. Tidak ada bitcoin fisik, hanya saldo yang disimpan di buku besar publik yang dapat diakses oleh setiap orang secara transparan (meskipun setiap catatan dienkripsi).

Dengan kata lain, bitcoin adalah mata uang digital yang dibuat dan disimpan secara digital. Karena bentuknya digital, bitcoin tidak memiliki wujud fisik layaknya mata uang resmi Negara. Tidak ada otoritas yang mengatur yang mengendalikannya.

Meskipun tidak menjadi alat pembayaran yang sah di sebagian besar dunia, Bitcoin sangat populer dan telah memicu peluncuran ratusan mata uang kripto lainnya, yang secara kolektif disebut sebagai altcoin. Bitcoin biasa disingkat BTC saat diperdagangkan.

Namun demikian, ada beberapa layanan yang menerima bitcoin sebagai alat pembayaran, salah satunya PayPal. Bitcoin bahkan bisa digunakan untuk membeli mobil buatan Tesla Inc.

Baca juga: Turun Rp 3.000 per Gram, Simak Rincian Harga Emas Antam Hari Ini

Bitcoin adalah aset berharga karena orang-orang bersedia menukarnya dengan barang atau jasa nyata, dan bahkan rela menukarnya dengan uang tunai.

Apa Itu Bitcoin: Pengertian, Harga, dan Cara Kerjanya (6)SHUTTERSTOCK/CHINNAPONG Bitcoin adalah mata uang kripto pertama yang memiliki nilai kapitalisasi paling besar

Nilai kapitalisasi dan harga bitcoin

Saat ini, bitcoin adalah mata uang kripto dengan kapitalisasi atau valuasi pasar terbesar di dunia. Per Desember 2021, total valuasi pasar bitcoin adalah mencapai 913,1 miliar dolar dollar AS atau sekitar Rp 13.103 triliun (kurs Rp 14.350).

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`); var wSpecStop = createElementFromHTML(`

Konten disembunyikan.
Muat ulang halaman untuk perbarui rekomendasi.

`); reactionPopup.querySelector('.buttonShare').setAttribute('data-title', item.title); reactionPopup.querySelector('.buttonShare').setAttribute('data-url', item.url); reactionPopup.querySelector('.buttonShare').setAttribute('data-campaign', 'AIML_Widget_Desktop'); let userFeedback = new UserFeedback(resultObj.engine['tracker_algsrc'], item.url + tracker_params, jxRecHelper, index); reactionPopup.querySelector('.buttonBookmark').addEventListener('click', function() { do_bookmark(item.url, index, userFeedback); }); reactionPopup.querySelector('.buttonShare').addEventListener('click', function() { userFeedback.event('share'); }); reactionPopup.querySelector('.buttonNotInterest').addEventListener('click', function() { if (getCookie('kmps_usrid')) { hideThisArt(this); userFeedback.event('not-interested'); } else { const parentAction = this.parentElement.parentElement.parentElement if (!!parentAction) { let indexElement = parentAction.getAttribute('data-index') if (indexElement != 'undefined') { localStorage.setItem('reaction_not_interest_temp', JSON.stringify({ urlpage: items[indexElement].url })) } } window.location.href = "https://account.kompas.com/login/a29tcGFz/" + btoa(window.location.href); } }); /** * trigger action "userFeedback" that user not interest item before, when not interest without login */ if (getCookie('kmps_usrid') && localStorage.getItem('reaction_not_interest_temp')) { const tempUrlNotInterest = JSON.parse(localStorage.getItem('reaction_not_interest_temp')) if (item.url == tempUrlNotInterest.urlpage) { userFeedback.event('not-interested'); localStorage.removeItem('reaction_not_interest_temp'); } } wSpecStop.querySelector('.wSpec-stop-undo').addEventListener('click', function() { showThisArt(this); userFeedback.event('un-not-interested'); }); recItem.appendChild(buttonOption); recItem.appendChild(reactionPopup); recItem.appendChild(wSpecStop); } var recItemWrapperA = createElement('a', null, null, null); recItemWrapperA.setAttribute('href', item.url + tracker_params); var titleDiv = createElement('h4', null, null, [cssClasses.title], item.title); var sourceDiv = null; if (item.hasOwnProperty('method')) { sourceDiv = createElement('div', null, null, [cssClasses.source], resultObj.engine['type'] + ' . ' + item.method.toUpperCase()); } else { var sourceDiv = createElement('div', null, null, [cssClasses.source], resultObj.engine['type']); } var textWrapper = createElement('div', null, null, [cssClasses.text_wrapper]); textWrapper.appendChild(categoryDiv); textWrapper.appendChild(titleDiv); textWrapper.appendChild(sourceDiv); recItemWrapper.appendChild(imgWrapper); recItemWrapper.appendChild(textWrapper); recItemWrapperA.appendChild(recItemWrapper); recItem.appendChild(recItemWrapperA); widgetWrapper.appendChild(recItem); // hook up the click handler for this item // recItem.onclick = handleClick.bind(null, jxRecHelper, item.url + tracker_params, index); recItemWrapperA.onclick = handleClick.bind(null, jxRecHelper, item.url + tracker_params, index); }); } var endDate = new Date(); var loadtime = (endDate.getTime() - startDate.getTime()); trackEventGa('AIML Article Recommendation', 'Content Loaded', 'algsrc='+algsrc+',site=MONEY,device=desktop,loadtime=' + loadtime) let domain = window.location.hostname; if(domain=='www.kompas.com'){ var url=window.location.href.split("/"); domain=url[2]+'/'+url[3] } let user_subs_type = "Gues"; let subs_type = ""; let is_lgn = 0; let engine = algsrc; if(getCookie('kmps_usrid')){is_lgn=1}; let time_load = loadtime; trackMixpanel(domain, user_subs_type, subs_type, is_lgn, 'success', time_load, engine); resolve(); /*** * JXRECSDK NOTES 3 of 5 - * pass all the info about the items to the rec helper * each one is an object: ALL MANDATORY * div * id * pos */ jxRecHelper.items(widgetItemArr); /*** * JXRECSDK NOTES 4 of 5 - * Call the ready() of the helper object when the recommendation * results have been populated to the widget * (This will register the action=ready event) */ if (resultObj.engine['type'] == 'api-1') { jxRecHelper.ready(resultObj.options.algo + ":" + resultObj.options.version); } else { jxRecHelper.ready(resultObj.engine['type']); } } else { jxRecHelper.error(204); console.error("Error: no recommendation items"); return; } } catch (err) { jxRecHelper.error(901); console.log(err.stack); let domain = window.location.hostname; if(domain=='www.kompas.com'){ var url=window.location.href.split("/"); domain=url[2]+'/'+url[3] } let user_subs_type = "Gues"; let subs_type = "" let is_lgn = 0; let engine = algsrc; if(getCookie('kmps_usrid')){is_lgn=1}; let endDate = new Date(); let time_load = (endDate.getTime() - startDate.getTime()); trackMixpanel(domain, user_subs_type, subs_type, is_lgn, 'fail', time_load, engine); } }); } const _jxRecSdkURL = 'https://scripts.jixie.media/jxrecsdk.1.0.min.js'; var startDate = new Date(); class OneWidget { constructor() { //this is also the one we will pass to the JX rec helper object when //we instantiate it: //In this implementation most of these come from the options obj //on the publisher page. this._options = { accountid: '9262bf2590d558736cac4fff7978fcb1', pageurl: 'https://money.kompas.com/read/2021/12/09/131030826/apa-itu-bitcoin-pengertian-harga-dan-cara-kerjanya', widget_id: '1000183-6xWeiWZFIM', type: 'pages', container: 'rekomendasi-konten-pilihan-untukmu-aiml', keywords: content_tags, title: title, customid: "26", count: 14, }; this._containerId = this._options.container; this._container = document.getElementById(this._containerId); this._engines = [{"url":"https:\/\/recommendation.jixie.media\/v1\/recommendation","method":"GET","pageurl":"https:\/\/money.kompas.com\/read\/2021\/12\/09\/131030826\/apa-itu-bitcoin-pengertian-harga-dan-cara-kerjanya","system":"jx","type":"api-1","tracker_params":"?source=widgetML","tracker_algsrc":"V","count":14,"page_status":"read","excludeitemids":"20211209131030826"}]; } kickOff() { startDate = new Date(); const rand = Math.floor(Math.random() * 1000); /*const randSystem = Math.floor(Math.random() * 3); this._engine = this._engines[randSystem] if (location.hostname.indexOf('lestari') != -1) { this._engine = this._engines[1] }*/ this._engine = this._engines[0]; this._options.system = this._engine['system'] trackEventGa('AIML Article Recommendation', 'Widget load', 'algsrc=' + this._engine['tracker_algsrc'] + ',site=MONEY,device=desktop') let promJXSDK = fetchJSFileP(_jxRecSdkURL); let thisObj = this; // first we wait on the JX REC SDK to be loaded and initialized let recHelperObj = null; let recResults = null; promJXSDK .then(function() { /*** * JXRECSDK NOTES 1 of 5 - INSTANTIATION OF A JX REC HELPER OBJECT * Call this AFTER JX REC SDK is loaded but BEFORE you call your REC * backend. * * param: MANDATORY options object * options object must at a minimal have * accountid: get from jixie * widgetid: get from jixie * container: DIV ID of the destination div to house the widget * (for jixie widget this is just the options object passed from the page) * * (This will also register the action=load event) */ recHelperObj = jxRecMgr.createJxRecHelper(thisObj._options); let basicInfo = thisObj._options; basicInfo.engine = thisObj._engine if (basicInfo.engine.type == 'api-1') { var options = { count: basicInfo['count'], adpositions: "", keywords: basicInfo['keywords'], title: basicInfo['title'], date_published: "2021-12-09", pagecategory: "MONEY", algo: "mixed" }; if(getCookie('kmps_usrid')){ var kg = { pagetype:basicInfo.engine.page_status, uid:getCookie('kmps_usrid'), ukid:getCookie('kmp_uid') } if(basicInfo.engine.page_status=='read'){ kg['excludeitemids'] = basicInfo.engine.excludeitemids; } options['additional'] = { kg:kg }; } return recHelperObj.getJxRecommendations(options); } else { return fetchRecommendationsP(basicInfo, recHelperObj.getJxUserInfo()); } }) .then(function(resp) { if (thisObj._engine.type == 'api-3') { recResults = new Object recResults.items = resp.docs.result; } else { recResults = resp; } recResults.engine = thisObj._engine; if (!resp || !recResults.items || recResults.items.length == 0) { /*** * JXRECSDK NOTES 2 of 5 - * Call the error() function on the recHelper when either an error * has occured in the fetching or there are no recommended items * * (This will register the action=error event) */ recHelperObj.error(204); throw "no recommendation results"; } }) .then(function() { // everything is ready (recommendation results, css): document.getElementById("rekomendasi-konten-pilihan-untukmu-aiml").classList.remove("-loading"); document.querySelector('.wSpec-list').remove(); createDisplay(rand, thisObj._container, recResults, recHelperObj) .then(function() { toggleDropdown(); //observe lozad // lozad('.lozad', { // load: function(el) { // el.src = el.dataset.src; // el.onload = function() { // el.classList.add('fade') // } // } // }).observe() }) }) .catch(function(error) { console.log(`Unable to create recommendations widget ${error.stack} ${error.message}`); }); } } var limit_gtm_ready = 1; function check_gtm_ready() { if ('ga' in window) { // create a new instance of our widget based on the options const newW = new OneWidget(); newW.kickOff(); } else { const timeout_gtm_ready = setTimeout(check_gtm_ready, 500) limit_gtm_ready += 1; if (limit_gtm_ready > 10) { clearTimeout(timeout_gtm_ready); const newW = new OneWidget(); newW.kickOff(); } } } check_gtm_ready() document.querySelector('.wSpec-secret').addEventListener('click', function(e) { e.preventDefault(); let wSl = document.querySelectorAll('.wSpec-source'); if (wSl.length > 0) { for (let i = 0; i < wSl.length; i++) { wSl[i].classList.toggle('show') } } }) function trackEventGa(category, action, label) { if ("ga" in window) { ga(function() { tracker = ga.getAll()[0]; if (tracker) { tracker.send("event", category, action, label); console.log('track event ', category, action, label) } }) } } function trackMixpanel(domain, user_subs_type, subs_type, is_lgn, is_load, time_load, engine){ // if(domain.indexOf("katanetizen") != -1){ // console.log("sini", domain, user_subs_type, subs_type, is_lgn, is_load, time_load, engine); // mixpanel.track('AIML Widget Loaded', { // 'Page Type': 'Read', // 'Page Domain': domain, // 'Page Subscription Type': subs_type, // 'Login Status': is_lgn, // 'Load Status': is_load, // 'Load Time': time_load, // 'Engine': engine, // 'Widget Type': 'Article', // }); mixpanel.track('aiml_content_loaded', { 'Page Type': '', 'Page Domain': 'Kompas.com', 'User Type': user_subs_type, 'Page Subscription Type': subs_type, 'Log In Status': is_lgn, 'Load Status': is_load, 'Load Time': time_load, 'Engine': engine, 'Widget Type': 'Article', }); console.log('track mix panel', 'AIML Widget Loaded', 'Read') let kmp_nm = getCookie('kmp_nm'); if(kmp_nm){ distinct_id = mixpanel.get_distinct_id(); mixpanel.identify(distinct_id); mixpanel.people.set({ '$name': atob(kmp_nm), 'Subscription Type': subs_type, }); console.log('track mix panel people', 'AIML Widget Loaded', 'Read') } // } } function formBody(obj) { let formBody = []; for (var property in obj) { let encodedKey = encodeURIComponent(property); let encodedValue = encodeURIComponent(obj[property]); formBody.push(encodedKey + "=" + encodedValue); } return formBody.join("&"); } function getCookie(name) { var name = name + '='; var cookies = decodeURIComponent(document.cookie).split(';'); for (var i = 0; i < cookies.length; i++) { var c = cookies[i]; while (c.charAt(0) == ' ') { c = c.substring(1); } if (c.indexOf(name) == 0) { return c.substring(name.length, c.length); } } } function get_guid(url) { let arrayUrl = url.split('/'); let readPath = arrayUrl.indexOf('read'); if (arrayUrl[readPath + 1] == 'xml') { readPath += 1; } let year = arrayUrl[readPath + 1]; let month = arrayUrl[readPath + 2]; let date = arrayUrl[readPath + 3]; let id = arrayUrl[readPath + 4]; let guid = `.xml.${year}.${month}.${date}.${id}`; return guid; } function toggleDropdown() { let tdd = document.querySelectorAll('[data-dropdown]') if (!!tdd) { tdd.forEach((el) => { el.addEventListener('click', function() { el.parentElement.classList.toggle('-active') let saved = el.parentElement.getAttribute('data-saved') let kmps_usrid = getCookie('kmps_usrid'); if (kmps_usrid && !saved && el.parentElement.classList.contains('-active')) { let url = el.parentElement.getAttribute('data-url'); let guid = get_guid(url); check_bookmark( kmps_usrid, guid ).then(function(resp) { if (resp.hasOwnProperty('total_data')) { if (resp.total_data > 0) { el.parentElement.querySelector('.buttonBookmark').classList.add('-active'); el.parentElement.querySelector('.buttonBookmark').innerHTML = 'Hapus dari tersimpan'; el.parentElement.setAttribute('data-saved', 'true'); } else { el.parentElement.setAttribute('data-saved', 'false'); } } }) } }) document.addEventListener("click", function(e) { // console.log(e.target) if (el.contains(e.target)) { // console.log(tdd) } else { el.parentElement.classList.remove('-active') } }); }); } } function check_bookmark(kmps_usrid, guid) { let url = `https://api.kompas.com/2021/reaction/bookmark/list?kmps_usrid=${kmps_usrid}&guid=${guid}`; return new Promise(function(resolve, reject) { var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { resolve(JSON.parse(this.responseText)) } }; xmlhttp.open("GET", url, true); xmlhttp.send(); }); } function do_bookmark(pageurl, pos, userFeedback) { const wSpecItem = document.querySelector(`.wSpec-item[data-index="${pos}"]`); const btnBookmark = wSpecItem.querySelector('.buttonBookmark'); const kmps_usrid = getCookie('kmps_usrid'); const guid = get_guid(pageurl); if (kmps_usrid) { if (btnBookmark.classList.contains('-active')) { set_unbookmark({ guid: guid, kmps_usrid: kmps_usrid, type: 'article' }).then(function(resp) { btnBookmark.classList.remove('-active'); btnBookmark.innerHTML = 'Simpan artikel'; reactionToast('Artikel berhasil dihapus dari list yang disimpan'); userFeedback.event('un-save'); }).catch(function(resp) { // message: "Data doesn't exists" if (resp.hasOwnProperty('message') && resp.message.includes('exist')) { btnBookmark.classList.remove('-active'); btnBookmark.innerHTML = 'Simpan artikel'; reactionToast('Artikel berhasil dihapus dari list yang disimpan'); } }) } else { const user_bookmark_url = "https://activity.kompas.com/saved?order=desc"; set_bookmark({ guid: guid, kmps_usrid: kmps_usrid, type: 'article', publisher: 'kompas', platform: 'desktop' }).then(function(resp) { btnBookmark.classList.add('-active'); btnBookmark.innerHTML = 'Hapus dari tersimpan'; reactionToast('Artikel berhasil disimpan', user_bookmark_url); userFeedback.event('save'); }).catch(function(resp) { // message: "Data already exist" if (resp.hasOwnProperty('message') && resp.message.includes('exist')) { btnBookmark.classList.add('-active'); btnBookmark.innerHTML = 'Hapus dari tersimpan'; reactionToast('Artikel berhasil disimpan', user_bookmark_url); } }) } } else { const login_url = "https://account.kompas.com/login/a29tcGFz/" + btoa(window.location.href); window.location.href = login_url; } } function set_bookmark(data) { const url = "https://api.kompas.com/2021/reaction/bookmark/add"; return new Promise(function(resolve, reject) { const xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 201) { resolve(JSON.parse(this.responseText)); } else if (this.readyState == 4 && this.status == 400) { reject(JSON.parse(this.responseText)); } }; xmlhttp.open("POST", url, true); xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8"); xmlhttp.send(formBody(data)); }); } function set_unbookmark(data) { const url = "https://api.kompas.com/2021/reaction/bookmark/delete"; return new Promise(function(resolve, reject) { const xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { resolve(JSON.parse(this.responseText)); } else if (this.readyState == 4 && this.status == 400) { reject(JSON.parse(this.responseText)); } }; xmlhttp.open("POST", url, true); xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8"); xmlhttp.send(formBody(data)); }); } class UserFeedback { constructor(engine, pageurl, jxRecHelper, pos) { this.engine = engine; this.pageurl = pageurl; this.jxRecHelper = jxRecHelper; this.pos = pos; } event(feedback) { if (this.engine == 'C') { const xmlhttp = new XMLHttpRequest(); let params = { domain: 'kompas.com', ce_userid: getCookie('kmps_usrid'), ce_sessionid: getCookie('ukid'), ce_pageurl: this.pageurl, engine: 'C', ce_feedback: feedback } xmlhttp.open("GET", 'https://apis.kgdata.dev/v1/aiml/feedback-widgetml' + formatParams(params)); xmlhttp.send(); } else if (this.engine == 'V') { if (feedback == 'share') { this.jxRecHelper.shared(this.pos); } else if (feedback == 'save') { this.jxRecHelper.bookmarked(this.pos); } else if (feedback == 'not-interested') { this.jxRecHelper.hidden(this.pos); } else if (feedback == 'un-not-interested') { this.jxRecHelper.unhidden(this.pos); } } } } function formatParams(params) { return "?" + Object .keys(params) .map(function(key) { return key + "=" + encodeURIComponent(params[key]) }) .join("&") }

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