Rebar Shield Ecosystem Integrations

Rebar Shield routes Bitcoin transactions directly to mining pools, bypassing the public mempool. This prevents transaction details from being visible to MEV searchers and other network participants until block inclusion.

The service operates by accepting signed transactions via RPC endpoint and distributing them to participating mining pools through private channels. Transactions remain hidden from public view until miners include them in blocks.

Seven community integrations have adopted Rebar Shield within the first 3 months of operations (March 24 - June 2025), demonstrating rapid ecosystem adoption of Bitcoin MEV protection:

March 2025
└─ March 24: Rebar Shield Launch - Revolutionary MEV protection goes live

April 2025
├─ April 2025: Shield v1.0.1 - Transparent error responses & enhanced safeguards
├─ April 22: TAP Protocol - First protocol-level integration
└─ April 26: Shield v1.1.0 - Fee rate-based ordering mechanism launched

May 2025  
├─ Goji (May 8) - First community experiment by @TangataNui
├─ Alkane.dev (May 13) - Smart contract platform
└─ Acai (May 14) - Refined implementation by @TangataNui

June 2025
├─ ARBUZ (June 1) - Acai derivative token
├─ BERI (June 1) - Fee-free Acai fork  
└─ Ordiscan (June 5) - Block explorer integration

This remarkable timeline shows the evolution from launch to ecosystem in just 90 days: March 24th revolutionary launch → rapid product iteration (v1.1.0) → experimental implementations → production deployments → derivative ecosystem expansion. @TangataNui's progression from Goji (first experiment) to Acai (refined implementation) exemplifies how the community transformed an initial platform into a thriving ecosystem within the first quarter of operations.

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Announcement Date: April 22nd, 2025
Developer: @tap_protocol
Website: tap-protocol.com
Announcement: https://x.com/tap_protocol/status/1914624426236170549

Function

First protocol-level integration of Rebar Shield, providing mempool protection for all TAP Protocol transactions.

Implementation

• Protocol-level Rebar Shield integration
• Full transaction privacy until on-chain confirmation
• Eliminates sniping, front-running, and MEV attacks
• Comprehensive protection for all TAP Protocol operations

Developer Perspective: "TAP Protocol integrated Rebar Shield at the protocol level to eliminate one of the biggest recurring pain points for builders: having to engineer their own defenses against MEV. By making Rebar Shield natively available across TAP, we've made it simple for developers to enable robust mempool protection without needing to build it themselves. Since launch, we've seen clear improvements in transaction integrity and greater confidence from teams building on top of TAP." - TAP Protocol Team

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Announcement Date: May 8th, 2025
Developer: @TangataNui
Alkanes ID: 2:10663
Repository: github.com/Misha-btc/Goji
Announcement: https://x.com/TangataNui/status/1920474707738177783

Function

First community-developed modification of "free-mint.wasm" smart contract designed to reduce RBF bot impact by moving minting from public mempool to Rebar Shield. Represents @TangataNui's initial experiment with private mempool integration.

Implementation

• Requires output[0] value below dust limit
• Modified to require 69 sats on first OP_RETURN output
• Demonstrates private mempool utility for WASM smart contracts
• Works with 14-20% Rebar partner hashrate coverage

Relationship to Other Integrations

Goji served as the experimental foundation that led to the refined Acai implementation by the same developer.

Developer Perspective: "I became interested in Rebar Shield primarily as a tool capable of clustering mempool policy — and, as a result, opening a new front for miner competition." - @TangataNui

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Announcement Date: May 13th, 2025
Developer: @lifofifo
Website: alkane.dev
Announcement: https://x.com/lifofifo/status/1922312590560047464

Function

Smart contract platform on Bitcoin implementing Rebar Shield for transaction privacy during contract execution. Enables invoking specific Alkane smart contract methods with integrated Rebar Shield and MARA Slipstream support.

Implementation

• Integrates Rebar Shield RPC endpoints
• Routes contract transactions through private channels
• Maintains transaction privacy until block confirmation
• Provides free access to Wizards of Ord holders

Developer Perspective: "Rebar Shield has great hash coverage and you can reliably mine a TX via private mempool within a short time, like an hour." - @lifofifo

On the integration process: "Rebar Shield's API is well documented and the integration process was very straightforward. Slipstream doesn't have any public API, so a bit more work went into that but nothing too complicated." - @lifofifo

On user impact: "Being able to execute Alkane contracts privately is a must for many types of smart contracts, and we're glad it's now easy to do so." - @lifofifo

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Announcement Date: May 14th, 2025
Developer: @TangataNui
Alkanes ID: 2:21219
Repository: github.com/Misha-btc
Live: fartane.com
Announcement: https://x.com/RebarLabs/status/1929196559687725334

Function

Alkanes smart contract that restricts mint operations to blocks mined by specific pools. Represents the refined implementation following @TangataNui's initial Goji experiment, focusing on economic incentives rather than technical workarounds.

Implementation

• Parses coinbase script signatures for mining pool strings
• Compares extracted strings against approved pool list
• Approves mints only when mined by verified pools
• Rejects operations from non-approved miners

Results

Testing shows 100% mint success rate when using Rebar Shield versus 14-20% success rate in public mempool due to RBF bot interference.

Relationship to Other Integrations

Acai evolved from the Goji experiment and became the foundation for ARBUZ, BERI, and Ordiscan integrations.

Developer Perspective: "Comparing the technical approaches of Goji and Acai is difficult — they're fundamentally different concepts. Acai is a temporary contract, optimized for current conditions. It's likely less durable by nature than Goji, but its main advantage lies in its ability to efficiently guarantee revenue for Rebar Shield partners. That was the core development goal, while the increased resistance to RBF was more of a user-side bonus." - @TangataNui

On impact since launch: "At this stage, the Alkanе token marketplace remains primarily an entertainment-driven place, where each new contract is expected to introduce novel mechanics. There's still a lack of robust financial products — and therefore a lack of integrations and data needed to properly assess the impact of new designs." - @TangataNui

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Announcement Date: June 1st, 2025
Developer: @maksim_btc
Alkanes ID: 2:25349
Video Tutorial: https://x.com/maksim_btc/status/1929181218811056257

Function

Token created using the Acai smart contract, demonstrating community adoption of Rebar Shield-protected minting.

Implementation

• Utilizes Acai smart contract for minting
• Accessible through fartane.com with OYL wallet connection
• Leverages Rebar Shield for MEV-protected token creation

Results

182 successful mints completed, creating 18,200 ARBUZ tokens in the Bitcoin ecosystem. All metrics are visible on Ordiscan.

Relationship to Other Integrations

ARBUZ is a direct application of the Acai smart contract, showcasing the contract's reusability for community token creation. Part of the broader Acai ecosystem chain that includes Fartane.

Developer Perspective: "First and foremost, because it's an iconic contract and one of the first to prove its effectiveness within the Bitcoin blockchain system in terms of security. Using Rebar Shield for minting allowed me to sleep soundly, knowing that every mint transaction sent through it would successfully create an ARBUZ. 182 units have already been successfully minted — meaning we now have 18,200 ARBUZes in the Bitcoin ecosystem!" - @maksim_btc

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Announcement Date: June 1st, 2025
Developer: @hieu_sats
Alkanes ID: 2:25353
Live: alkanes.web.app

Function

Fee-free alternative to Acai-based tokens while maintaining Rebar Shield integration. Provides experimental token deployment without fee structure.

Implementation

• Deployed using OYL SDK with clean token logic
• No tax or fee structure (removes the 1069 sats fee from Acai)
• Maintains compatibility with Rebar Shield infrastructure
• Uses Bitcoin genesis block Unix timestamp as resource number

Future Development

Plans to implement a deploy feature allowing users to deploy tokens using either the original BERI or Acai contracts without needing OYL SDK knowledge - users will just need to sign confirmations through the web interface.

Relationship to Other Integrations

BERI represents a fee-free fork of the Acai concept, offering an alternative economic model while preserving MEV protection benefits.

Developer Perspective: "Since deploying the first contract and token, $beri, I've always made it clear that it's a fork of $acai — with one key change: removing the 1069 sats fee. I believe a standard contract should not include any mandatory fees. The BERI contract itself takes no fees — staying true to the principle of being free for everyone. All credit and appreciation go to @TangataNui, the creator of $acai." - @hieu_sats

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Announcement Date: June 5th, 2025
Developer: @t4t5
Website: ordiscan.com
Announcement: https://x.com/t4t5/status/1930660292070957178

Function

Block explorer with integrated Rebar Shield support for minting Acai-type tokens that can only be minted reliably through private mempool routing.

Implementation

• Supports Alkanes token minting with Rebar Shield integration
• Enables reliable minting by bypassing regular mempool
• Provides interface for MEV-protected token interactions
• Demonstrates growing Bitcoin MEV protection adoption

Relationship to Other Integrations

Ordiscan provides infrastructure-level support for Acai-based minting, representing second-order integration expanding access to Rebar Shield protection.

[DEVELOPER PERSPECTIVE - QUOTE TO BE ADDED]

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| Integration | Type | Alkanes ID | MEV Protection | Dependencies | Success Rate | Primary Use Case | |-------------|------|------------|----------------|--------------|--------------|------------------| | TAP Protocol | Protocol | N/A | Protocol-level | Independent | N/A | Asset transactions | | Goji | Smart Contract | 2:10663 | Contract-based | Independent | 14-20% hashrate | Experimental minting | | Alkane.dev | Platform | N/A | Platform-level | Independent | N/A | Contract execution | | Acai | Smart Contract | 2:21219 | Contract-based | Independent | 100% vs 14-20% | Token minting | | ARBUZ | Token | 2:25349 | Contract-based | Acai-derived | 182 mints (18,200 tokens) | Community token | | BERI | Token | 2:25353 | Contract-based | Acai-fork | Inherits Acai | Fee-free token | | Ordiscan | Explorer | N/A | Interface-level | Acai-integration | Inherits Acai | Mining interface |

The following process occurs when using Rebar Shield:

1. Transaction construction using standard Bitcoin transaction format
2. Submission to Rebar Shield instead of public mempool
3. Rebar Shield distributes to participating mining pools via private channels
4. Mining pools include transactions in blocks without prior public broadcast
5. Transaction details become visible only after blockchain confirmation

• API Reference: docs.rebarlabs.io
• Technical Specifications: Available in documentation
• Integration Examples: OYL, Unisat implementations available

• Developer Community: discord.gg/rebarlabs
• Technical Support: Discord community channels
• Enterprise Integration: Direct contact through Rebar Labs

Participating pools receive transactions through secure channels and include them in block templates. Pools benefit from premium fee transactions paid by privacy-conscious users.

Current integration allows verification of pool participation through coinbase script analysis, enabling smart contracts like Acai to implement pool-dependent logic.

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These integrations demonstrate practical MEV protection and transaction privacy implementations across Bitcoin applications. The remarkable timeline shows evolution from March 24th revolutionary launch to ecosystem expansion within the first 3 months of operations - from experimental approaches (Goji) to refined implementations (Acai) to derivative ecosystem (ARBUZ, BERI, Ordiscan), with each providing specific functionality while utilizing Rebar Shield's private transaction routing infrastructure.

The achievement is clear: In just 90 days, Rebar Shield went from zero to a thriving ecosystem with 7 independent integrations, major architectural improvements (v1.1.0), and community-driven innovation that demonstrates the viability of Bitcoin MEV protection as essential infrastructure.