> For the complete documentation index, see [llms.txt](https://docs.cdpi.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cdpi.dev/technical-notes.md).

# Technical Notes

- [Identity & Trust Infrastructure](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries.md): Who is the counterparty? Can I trust them?
- [Digital ID](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id.md): Many countries have built Digital IDs, including Singapore (Singpass), Rwanda’s national ID with eKYC, Chile’s national ID and India's Digital ID (Aadhaar).
- [Capabilities on ID system](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/capabilities-on-id-system.md): How to convert any ID system into a DPI
- [ID-Auth](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/id-auth.md)
- [Face Authentication](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/face-authentication.md): Approach to enabling inclusion in onboarding individuals for use cases such as social protection
- [eKYC/ Identity profile sharing](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/ekyc-identity-profile-sharing.md)
- [Single Sign On (SSO)](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/single-sign-on-sso.md)
- [QR Code for Offline ID](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/digital-id/qr-code-for-offline-id.md): Best practices design and implementation guide
- [Trust Infra](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/electronic-signature-pki-and-trust-infra.md): Can I assert in a tamper-proof manner that X item was agreed upon by and/or came from source Y?
- [Digital Signatures and PKI](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/electronic-signature-pki-and-trust-infra/digital-signatures-and-pki.md)
- [eConsent](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/electronic-signature-pki-and-trust-infra/econsent.md)
- [eSign](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/electronic-signature-pki-and-trust-infra/esign.md)
- [Executing a Decentralised Trust Model](https://docs.cdpi.dev/technical-notes/digital-ids-and-electronic-registries/electronic-signature-pki-and-trust-infra/executing-a-decentralised-trust-model.md): What establishes Trust in a ‘decentralized trust model’?
- [Data Sharing & Credentials ](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra.md): Can an individual/entity/society use its data for empowerment and improved services?
- [A primer to personal data sharing](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/a-primer-to-personal-data-sharing.md)
- [Verifiable Credentials](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/verifiable-credentials.md)
- [eLockers](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/verifiable-credentials/elockers.md): A powerful intervention to scale up trusted digital credentials across the ecosystem
- [Decision Framework for Verifiable Credentials](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/verifiable-credentials/decision-framework-for-verifiable-credentials.md)
- [Comparative Analysis of Verifiable Credential Stacks](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/verifiable-credentials/decision-framework-for-verifiable-credentials/comparative-analysis-of-verifiable-credential-stacks.md)
- [DIDs & PKI in Verifiable Credentials](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/verifiable-credentials/dids-and-pki-in-verifiable-credentials.md): DIDs provide a way to establish cryptographically verifiable digital identities without relying on a central authority. When used with verifiable credentials, they create a trust framework that's both
- [Data standards](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/data-standards.md): A key technology enabler in data exchange
- [Non-personal Anonymised Datasets](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/non-personal-anonymised-datasets.md): Guidelines for for Decision Making & Research
- [Building Data Analytics Pipelines](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/building-data-analytics-pipelines.md)
- [Data Exchanges: System to system data sharing](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/data-exchanges-system-to-system-data-sharing.md)
- [Data Exchange 101](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/data-exchanges-system-to-system-data-sharing/data-exchange-101.md)
- [Platform Approaches: Four Examples 1](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/data-exchanges-system-to-system-data-sharing/platform-approaches-four-examples-1.md)
- [Getting Started: The +1 Approach](https://docs.cdpi.dev/technical-notes/data-and-credentialing-infra/data-exchanges-system-to-system-data-sharing/getting-started-the-+1-approach.md)
- [Payments & Transaction Networks](https://docs.cdpi.dev/technical-notes/digital-payment-networks.md): P2P, P2M, B2B, G2P, and P2G.
- [Financial Address](https://docs.cdpi.dev/technical-notes/digital-payment-networks/financial-address.md): Normalised financial address for payments
- [Interoperable QR Code](https://docs.cdpi.dev/technical-notes/digital-payment-networks/interoperable-qr-code.md): P2P, P2M, Recurring/Bill Payments, etc.,
- [Interoperable Authentication](https://docs.cdpi.dev/technical-notes/digital-payment-networks/interoperable-authentication-p2p-p2m.md): P2P, P2M
- [Interoperable Bill Payments](https://docs.cdpi.dev/technical-notes/digital-payment-networks/interoperable-bill-payments.md): Streamlining the process of bill payments across authorities and departments
- [Cash-in Cash-Out (CICO)](https://docs.cdpi.dev/technical-notes/digital-payment-networks/cash-in-cash-out-cico.md): Interoperable banking agents and devices for last-mile CICO transactions
- [G2P Payments](https://docs.cdpi.dev/technical-notes/digital-payment-networks/g2p-payments.md): Increasing Efficiency of Government-to-Person Payments
- [Discovery & Fulfilment](https://docs.cdpi.dev/technical-notes/digital-payment-networks/discovery-and-fulfillment-networks.md): Accessing any goods or services interoperably via any app or interface
- [Platforms to Protocols](https://docs.cdpi.dev/technical-notes/digital-payment-networks/discovery-and-fulfillment-networks/platforms-to-protocols.md): Why do we need open networks?
- [Cloud-Agnostic Deployment of DPI and Data Portability](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability.md)
- [Architectural Principles for Cloud-Agnostic DPI](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/architectural-principles-for-cloud-agnostic-dpi.md)
- [Design deep dive](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/design-deep-dive.md)
- [Data Portability as Core Principle](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/data-portability-as-core-principle.md)
- [Implementation Patterns](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/implementation-patterns.md)
- [The Role of One-Click Deployment](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/the-role-of-one-click-deployment.md)
- [Governance and Decision Frameworks](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/governance-and-decision-frameworks.md)
- [Challenges and Trade-offs](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/challenges-and-trade-offs.md)
- [Recommendations for DPI Implementations by System Maturity](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/recommendations-for-dpi-implementations-by-system-maturity.md)
- [Future Directions](https://docs.cdpi.dev/technical-notes/cloud-agnostic-deployment-of-dpi-and-data-portability/future-directions.md)