# Transaction Format

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

## Independent Records

<figure><img src="/files/kBuVrOJS5vehghi3V0m4" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="130">Operation</th><th width="137">Record Type</th><th width="207">Transaction Inputs</th><th>Transaction Outputs</th></tr></thead><tbody><tr><td>Write</td><td>Fingerprint</td><td>Fixed Funding Chits</td><td><p>0: Event header</p><p>1: fixed length fingerprint</p></td></tr><tr><td>Write</td><td>Unencoded</td><td>Variable Funding Chits</td><td><p>0: Event header</p><p>1: variable length record</p></td></tr></tbody></table>

## Linked Records

<figure><img src="/files/U5TlwHr4XdOsWCQYwsRW" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="128">Operation</th><th width="129">Record Type</th><th width="211">Transaction Inputs</th><th>Transaction Outputs</th></tr></thead><tbody><tr><td>Create</td><td>Fingerprint</td><td>Fixed Funding Chits</td><td><p>0: Event header</p><p>1: fixed length fingerprint</p><p><strong>2: fund for next</strong></p></td></tr><tr><td>Update</td><td>Fingerprint</td><td><p><em>0:</em> <em>fund from previous</em></p><p>1+: Fixed Funding Chits</p></td><td><p>0: Event header</p><p>1: fixed length fingerprint</p><p><strong>2: fund for next</strong></p></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Create</td><td>Unencoded</td><td>Variable Funding Chits</td><td><p>0: Event header</p><p>1: variable length record</p><p><strong>2: fund for next</strong></p></td></tr><tr><td>Update</td><td>Unencoded</td><td><p><em>0:</em> <em>fund from previous</em></p><p>1+: Variable Funding Chits</p></td><td><p>0: Event header</p><p>1: variable length record</p><p><strong>2: fund for next</strong></p></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Delete / Finalise</td><td>None</td><td><p><em>0:</em> <em>fund from previous</em></p><p>1+: Fixed Funding Chits</p></td><td>0: Event header</td></tr></tbody></table>

{% hint style="info" %}
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**"). The [Navigate Linked Record](/nchain-event/linked-records/api-workflow/navigate-link-record.md) facility makes this easy for you.
{% endhint %}


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