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What is Opendime?

Opendime is a small USB device that allows you to utilize Bitcoin similarly to cash. It is straightforward to transfer to others, and by plugging it into any USB port, you can conveniently check the balance. At any time, the device can be unsealed for online transactions, which means you don't have to rely on anyone else's trust. Acting like a read-only USB stick, it works seamlessly with all computers, laptops, and smartphones. Inside the device, there is a QR code along with text files that detail your Bitcoin address and other pertinent information. When you hand an Opendime to someone, they can be confident that the funds cannot be reclaimed, as the private key is securely contained within the device itself. This key is generated internally and is completely unknown to anyone, including the original owner. This concept embodies the true nature of physical Bitcoin: simply give it away, and the recipient fully owns it. The device can be transferred multiple times, allowing transactions to occur as smoothly as a handshake. With no miner fees or delays in confirmation, Opendime facilitates effortless exchanges. As the Bitcoin ecosystem changes quickly, Opendime remains rooted in the fundamental principles of Bitcoin that have persisted for over five years, reinforcing its status as a dependable asset for digital currency enthusiasts. Additionally, its intuitive design makes it approachable for both beginners and experienced Bitcoin users alike, enhancing its appeal in the evolving digital landscape.

What is BitPolaris Proof of Reserves Kit?

The Proof of Reserves Kit functions as a crucial verification instrument for reserves, targeting cryptocurrency exchanges, brokers, and custodians in need of confirming customer balances or conducting reserve audits. It enables the importation of liability balances through multiple methods, including CSV files, read-only SQL queries, or internal HTTP endpoints, which are subsequently organized into a Merkle sum tree. This application verifies declared wallet balances on networks such as EVM, TRON, Bitcoin, Solana, and XRP Ledger at designated block or ledger positions, and effectively accommodates Bitcoin HD wallets by utilizing their extended public keys. Moreover, it employs read-only connectors to retrieve balances from Fireblocks vaults, alongside both Binance spot and funding accounts. The software not only verifies wallet ownership signatures but also produces daily snapshots that are Ed25519-signed, in addition to auditor reports and CSV annexes available in English and Turkish. Users can also validate individual inclusion proofs through a specialized branded verification page, enhancing transparency. This service is made available as either a BitPolaris-hosted option or can be installed directly on client servers, which guarantees that it neither stores any keys nor facilitates fund movements. Such dual accessibility significantly boosts its adaptability for various operational setups within the ever-evolving cryptocurrency landscape. Ultimately, this kit provides a reliable framework for maintaining trust and integrity in cryptocurrency transactions.

Media

Media

No images available

Integrations Supported

Bitcoin

Integrations Supported

Binance
Fireblocks
OpenDAX

API Availability

API Availability

Pricing Information

$69 one-time payment

Pricing Information

€490/month
For existing BitPolaris customers, the add-on costs €1,700 one time plus €85/month. The standalone hosted plan costs €6,300 for setup plus €490/month. The self-hosted license costs €9,800 one time, followed by €1,960/year for updates. Audit-day support costs €980 per quarter.

Supported Platforms

SaaS

Supported Platforms

SaaS
On-Prem

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Online Training

Company Facts

Organization Name

Opendime

Company Location

United States

Company Website

opendime.com

Company Facts

Organization Name

BitPolaris

Date Founded

2016

Company Location

Türkiye

Company Website

bitpolaris.com/products/proof-of-reserves/

Categories and Features

Cold Wallets

Not specified

Categories and Features

Crypto Compliance

Not specified

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