Tokenization event types
To receive a specific event, include its eventType in the webhook’s notification object.| Event type | Data object returned |
|---|---|
| onchain_data.updated | OnchainDataUpdatedEventData |
Supported blockchains
Fireblocks generates Tokenization webhook events only for managed smart contracts deployed on the following blockchains.Testnets
- Ethereum Sepolia (sepolia)
- Polygon Amoy (amoy)
- BNB Smart Chain Testnet (bsc_testnet)
- Optimism Sepolia (optimism_sepolia)
- Base Sepolia (base_sepolia)
- Avalanche C-Chain Fuji (fuji)
- Arbitrum Sepolia (arbitrum_sepolia)
Mainnets
- Ethereum (ethereum)
- BNB Smart Chain (bsc)
- Polygon (polygon)
- Base (base)
- Avalanche C-Chain (avalanche)
- Optimism (optimism)
- Arbitrum (arbitrum)
- Gnosis (gnosis)
- Ethereum Hoodi (hoodi)
Data objects
OnchainDataUpdatedEventData
| Parameter | Type | Description |
|---|---|---|
| baseAssetId | string | The AssetId of the blockchain’s gas token. |
| blockHash | string | Hash of the block that contains the transaction emitting the log. |
| blockNumber | number | Height of the block that contains the transaction. |
| blockTimestamp | number | The time the block was mined, as indicated in the block header. |
| chainId | number | EVM chain identifier (as per EIP-155). |
| contractAddress | string | The address that emitted the log. |
| cumulativeGasUsed | string | Total gas used in the block up to and including this transaction. |
| decodedLogs | object | DecodedLog |
| effectiveGasPrice | string | Actual price paid per gas unit for this transaction. |
| from | string | Sender of the transaction. |
| gasUsed | integer | Gas consumed by this transaction. |
| logsBloom | string | Bloom filter summarizing addresses and topics for the transaction logs. |
| status | string | The status of the transaction (0x0 = failure, 0x1 = success). |
| to | string | The recipient of the transaction. |
| transactionHash | string | Hash that identifies the transaction. |
| transactionIndex | string | Zero-based index of the transaction within the block. |
| type | string | Transaction type tag (as per EIP-2718). |
DecodedLog
| Parameter | Type | Description |
|---|---|---|
| address | string | The contract address emitting the event. |
| blockHash | string | Hash of the block that contains the transaction emitting the log. |
| blockNumber | string | Height of the block that contains the transaction. |
| transactionHash | string | Hash that identifies the transaction. |
| logIndex | string | The index of the log within the transaction. |
| key | string | The decoded name of the log parameter. |
| value | string | The value associated with the key. |