I wanted to re-emphasise Valeria's comment that farmers organisations and farmer-led businesses suggests that these bodies can be centres of trust for the farmer and an enabler to handle data. See https://www.cta.int/en/data4ag for examples in Swaziland, Lesotho, Samoa and Uganda. We are investigating which data services are priorities for farmers organisations and what are the issues and capacities that are needed to engage or deliver these services, starting at the first level with farmer registration.

In each case the starting point of these data projects was farmer awareness of the data collection and reassurance of use, using national data agreements and having data agreements with individual farmers, e..g Igara Tea.

USAID, FHI360 and Grameen will be discussing some of these issues next week at the ICTforAg meeting, it will be intersting also to hear their conclusions. From what I understood at their last webinar they have a similar focus on äggrgators and farmers organisations playing a role in  ensuring farmers have control over their data. The blockchain solutions for ID data management may play a role here but the trust issue will still play the key role.

Tim Berners-Lee in the semantic web stack (W3C 2006) put trust at the top his model for the semantic web stack talking about how the next wave of web developments would be built after web2 apps and social media. Blockchains may be seen to underpin a mechanism for technical trust but human nature means these services are more likely to be trusted if introduced by those organisations individuals already trust at a local level.