Replace hosted BTC APIs with Blockstream API and evaluate Runes/Ordinals alternatives

[tunghp2002]

Replace hosted BTC APIs with Blockstream API

Current APIs

• Mainnet: https://btc-api.koni.studio
• Testnet: https://api-testnet.openbit.app

Target APIs

• Mainnet: https://blockstream.info/api/
• Testnet: https://blockstream.info/testnet/api/

Goals

• Remove dependency on internally hosted BTC APIs
• Reduce backend maintenance cost
• Improve reliability using public infrastructure
• Simplify Bitcoin integration architecture

Runes / Ordinals

Blockstream API does not support:

• Rune metadata
• Rune balances
• Rune UTXOs
• Ordinals indexing

Need to research alternative solutions for:

• Rune metadata APIs
• Rune balance/indexer services
• Ordinals indexing services
• Self-hosted indexer options