Transaction Format

This is an overview of the format of the nChain Event transactions registered on the blockchain. It shows which inputs and outputs can be expected in each transaction type. Please contact nChain for a complete technical specification.

Independent Records

Operation	Record Type	Transaction Inputs	Transaction Outputs
Write	Fingerprint	Fixed Funding Chits	0: nChain Event header 1: fixed length fingerprint
Write	Unencoded	Variable Funding Chits	0: nChain Event header 1: variable length record

Linked Records

Operation	Record Type	Transaction Inputs	Transaction Outputs
Create	Fingerprint	Fixed Funding Chits	0: nChain Event header 1: fixed length fingerprint 2: fund for next
Create	Unencoded	Variable Funding Chits	0: nChain Event header 1: variable length record 2: fund for next
Update	Fingerprint	0: fund from previous 1+: Fixed Funding Chits	0: nChain Event header 1: fixed length fingerprint 2: fund for next
Update	Unencoded	0: fund from previous 1+: Variable Funding Chits	0: nChain Event header 1: variable length record 2: fund for next
Delete / Finalise	None	0: fund from previous 1+: Fixed Funding Chits	0: nChain Event header

Note that it is possible to follow linked records from the current record, either by transitioning backwards along the chain to the previous record that provided an input fund for this record ("0: fund from previous") or forwards to the next record that spent this record's output fund ("2: fund for next").