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Atomic Ownership Blockchains (AOB) are a type of blockchain architecture in which each atomic digital object is recorded on its own independent blockchain. As a multi-blockchain system, every blockchain represents the complete state and ownership history of exactly one indivisible (“atomic”) object. When the ownership of each atomic object is well-defined, the global state of the entire system is also well-defined.

AOB is designed to achieve a level of decentralization and security higher than that of Bitcoin-style public blockchains, while offering scalability limited only by hardware constraints.^{[1] [2]}

AOB is proposed partly to address decentralization and security limitations inherent in Proof-of-Work cryptocurrencies such as Bitcoin.

In Bitcoin, the miner who appends the next block temporarily holds excessive authority, which constitutes a form of centralization. Users cannot independently finalize payments; each transaction must be approved by miners, often incentivized through additional fees or “bribes.” Although block producers frequently rotate, this results only in fluid centralization, not true decentralization.

Because decentralization is insufficient, Bitcoin-style systems remain vulnerable to 51% attacks and cannot fundamentally resist double-spending. Arguments that economic incentives deter attacks are considered weak:^[1][2]

• Attackers can rent hash power at acceptable cost; block rewards partially offset expenses.
• A double-spend may not trigger market panic if unnoticed by the public.
• Attackers can profit by shorting Bitcoin before executing the attack.
• Attack motivation may be non-economic (e.g., demonstration attacks such as the Monero attack in August 2025), and states controlling large shares of hash power may also launch attacks.

Therefore, building monetary security purely on economic assumptions is insufficient, and Bitcoin’s economic foundation is not robust.^[1][2]

Atomic Ownership Blockchains describe a system built from many micro-blockchains, each representing a single atomic object. This enables decentralized circulation, cryptographic-level security, and open-ended scalability.^[1][2]

Each micro-blockchain in AOB is a public-domain private blockchain:

• publicly readable,
• privately writable—only the blockchain’s current owner may append blocks.

To transfer ownership, the owner appends a block specifying the recipient’s public key. The recipient becomes the new owner and may append subsequent blocks. No consensus algorithm or privileged role is required; blockchains circulate freely among users.

Since each blockchain corresponds to an indivisible asset (e.g., a digital banknote), the global asset distribution (ledger) is determined by the set of terminal blocks across all blockchains.^[1][2]

AOB extends Bitcoin’s decentralization by removing privileged actors such as miners. All participants have equal rights; users can authorize payments independently without requiring approval from any external party. This realizes a fully decentralized, non-hierarchical system.^[1][2]

AOB inherits Bitcoin’s cryptographic safety while additionally achieving resistance to Sybil attacks and double-spending without relying on economic assumptions.

Sybil attacks influence voting-based systems. AOB employs no voting, thus Sybil attacks are inapplicable.^[1][2]

AOB uses several mechanisms to prevent double-spending at the cryptographic level:

Because each blockchain is writable only by its owner, all forks originate from the same individual. Any fork is therefore direct evidence of malicious behavior. Nodes may blacklist the attacker and invalidate the attacker’s assets. If account creation requires fees, the attacker also loses the account cost, ensuring economically negative expected returns.^[1]

Conflicting blocks are resolved by the first-broadcast-wins rule.

• If the attacker broadcasts conflicting blocks far apart in time, the entire network will agree on the order (implicit consensus).
• If the interval is short, recipients reject the payment due to insufficient confirmation time.

Given an estimated network broadcast time t₀:

• A third-party node, after receiving a payment and observing no conflicting block within 2·t₀, can accept it safely.
• A payment recipient may wait 4·t₀ to ensure all nodes have also observed the block and applied the same rule.^[1][2]

If an attacker A sends two conflicting blocks privately to colluding parties B and C without public broadcast:

• When B or C later attempts to pay honest nodes and must broadcast the blockchain, A is exposed and blacklisted.
• The first broadcast among the conflicting blocks is accepted.
• Recipients may adopt an additional safeguard: if the previous transfer occurred while they were online but they did not observe a broadcast, they may reject the blockchain.^[1][2]

In a rare scenario where a network partition occurs immediately after the attacker broadcasts the first block and the attacker broadcasts a second conflicting block to a disjoint region:

• Probability is extremely low; generally not actionable.
• For high-value payments, recipients may extend the waiting period beyond the maximum plausible partition duration plus 3·t₀.
• Users may test connectivity to major websites to verify they are in the larger network region.

Even in theoretical edge cases, discrepancies affect only a single atomic object, not the global system. Since expected attacker profit is negative, such attacks rarely occur in practice.^[1][2]

AOB scales without upper bound by increasing the number of blockchains. When blockchain count becomes extremely large, network broadcast load increases; several strategies mitigate this:^[1][2]

Blockchains may be partitioned into groups. Nodes subscribe only to selected groups, and broadcast traffic occurs only within the relevant group. Increasing the number of groups improves performance linearly.

Inspired by the Lightning Network, users may create Speedy channels—themselves a form of AOB—where participants deposit several AOB banknotes and exchange payment statements off-chain without broadcasting, as long as each transfer stays within the deposited balance.

Fiat-pegged stablecoins require a centralized entity because fiat is centralized. AOB instead enables a decentralized asset whose value is stable relative to computational effort.

AOB can implement non-competitive Proof-of-Work minting:

• any user who performs a hash collision of a specified difficulty may mint a banknote,
• the denomination is proportional to the difficulty,
• when market value rises, higher profit margin incentivizes minting,
• unlike Bitcoin, producing more notes merely requires more computation without competition.

Thus, the currency stabilizes relative to the total amount of hashing work. Short-term stability reflects electricity prices, while in the long term, hardware progress causes it to depreciate against them.^[1][2]

AOB can be used for cryptocurrencies, stablecoins, fiat-denominated digital instruments, virtual currencies, metaverse assets, NFTs, real-world asset (RWA) tokens, commercial vouchers, financial notes, commodity traceability, and more.