> For the complete documentation index, see [llms.txt](https://docs.thetpa.ai/ai-teleport-plaque-address/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.thetpa.ai/ai-teleport-plaque-address/appendix-a.md).

# 📑 Appendix A

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#### Core concepts

* **DeAI TPA**, Decentralized AI Teleport Plaque Address, the AI model and infrastructure that powers the spatial web.
* **TPA**, Teleport Plaque Address, on-chain address that maps a URL or service to an immersive or AI destination.
* **Spatial web**, the internet experienced in 3D space across headsets, mobile, and WebXR.
* **3D immersive internet**, a web where pages become interactive scenes and environments.

#### Network and tokens

* **TPAI Chain**, AI-native Layer 1 blockchain linked to cloud compute, optimized for low fees and fast confirmation.
* **TPCoin.ai (TPC)**, utility token that subsidizes AI compute and powers the ecosystem economy.
* **TPAI-20**, token standard on the TPAI Chain for fungible tokens such as TPC.
* **Gas fee**, small on-chain fee paid to process transactions.
* **Finality**, time until a transaction becomes irreversible on the chain.
* **Throughput (TPS)**, transactions processed per second.

#### AI building blocks

* **LLM**, large language model used for text, code, reasoning tasks.
* **AGI**, artificial general intelligence, human-level capability across domains.
* **ASI**, artificial superintelligence, exceeds human capability across domains.
* **Multimodal**, models that handle text, images, audio, video, or 3D together.
* **Inference**, running a trained model to get outputs.
* **Fine-tuning**, adapting a base model with domain data.
* **RAG**, retrieval augmented generation, models that read from external knowledge at runtime.
* **AI agent**, autonomous system that plans, calls tools, and takes actions to achieve goals.

#### DeAI TPA components

* **TPA endpoint**, the callable address for a 3D scene or AI service.
* **Addressing layer**, system that resolves TPAs to content, compute, or services.
* **Programmable permissions**, rules that control who can read, write, invoke, or pay for a TPA.
* **Model hosting**, deploy custom models behind a TPA with usage billing.
* **Subsidized compute**, compute credits funded by TPC or protocol incentives.

#### Commerce and payments

* **Stablecoin**, crypto asset pegged to a fiat currency, used for settlement.
* **POS with TPA**, point-of-sale flow using a TPA as the merchant endpoint.
* **Usage-based billing**, pay per request, token, minute, or scene visit.
* **Revenue share**, automatic split of earnings between contributors.

#### Data, security, and governance

* **On-chain log**, immutable record of key actions and state.
* **Provenance**, verifiable trail of how assets, data, or models were produced.
* **ACL**, access control list, permissions for identities and contracts.
* **KYC or AML**, compliance checks for certain business flows if required.
* **Auditability**, ability to verify behavior, spend, and performance.

#### Devices and runtimes

* **WebXR**, browser standard for VR and AR experiences.
* **Apple Vision Pro**, **Meta Quest**, **Samsung XR**, **Apple Glasses**, representative spatial devices supported.

#### Abbreviations, quick list

AGI, ASI, LLM, RAG, TPA, TPC, TPAI, TPS, POS, ACL, KYC, AML, SDK, API, UI, IoT, GPU.