Documentation

PQS ascertains its configuration from the following sources, in order of priority: • HOCON configuration files (--config argument) • command-line arguments • Java system properties (-D arguments to java command) • environment variables Consult the command ./pqs.jar pipeline --help-v

PQS (Participant Query Store) subscribes to a validator’s transaction stream and projects contract data into a PostgreSQL database. Your backend queries this database with standard SQL, enabling: filtered queries, aggregations, joins, and full-text search that would be impractical through the Ledger

This page captures the Ledger Client Standard functionality that should be provided by fully conformant library implementations. It is written for developers who build Canton ledger client libraries. This standard reflects Canton 3.5. The Functionality Requirement column marks each capability as

Beyond the officially supported Java and TypeScript bindings, community members have built client libraries for other languages. These bindings are not maintained or supported by Canton Network and may not cover the full Ledger API surface or keep pace with every Canton release. Available Communit

Multiple support channels are available depending on your needs and relationship with Canton Network. Community Support Free, community-driven support channels available to everyone. Slack The primary community channel for real-time discussion. Channel | Purpose | #validator-operations |

A common deployment pattern on Canton Network combines dedicated synchronizers with the Global Synchronizer. Your validators connect to both, running high-volume or confidential workflows on the dedicated synchronizer while settling or sharing results through the Global Synchronizer. Why use a hyb

You can run validators exclusively on a dedicated synchronizer, with no connection to the Global Synchronizer. However, a dedicated synchronizer must have at least one validator that maintains a persistent connection to the Global Synchronizer for accounting and settlement purposes. This connection

Party Management Parties are the entities that interact with the Daml ledger, representing users or organizations. They can be onboarded to a Participant Node, which allows them to submit transactions and access the ledger. The following section explains how to onboard a (local) party. Refer to t

Canton validators can connect to multiple synchronizers at the same time. This is how the MainNet is extended — your validator participates in the Global Synchronizer for network-wide interoperability while also connecting to one or more dedicated synchronizers for specialized workflows with dedicat

Release of Canton 3.6.2 Canton 3.6.2 has been released on October 15, 2026. Summary This patch release fixes a slow Ledger API query that could stall the initialization of the ACS commitment processor in Canton 3.6.1 by using index lookups. What’s New Event sequential id range lookup of Le

The sequencer, participant and CometBFT have pruning options that can be used to ensure storage use is kept within reasonable bounds. Sequencer pruning Can be enabled in helm through the following config: synchronizers: current: sequencerPruningConfig: Enable or disable sequen

Minting delegations allow a delegate to instruct their validator node to automate the minting of rewards on behalf of an external party (the beneficiary) hosted on the same validator node. The delegate can be any party onboarded to the validator node’s wallet (e.g., the validator operator party, but

cURL Python JavaScript PHP Go Java Ruby curl --request GET \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/metadata/v1/info' import json import requests url = "https://example.com/api/validator/v0/scan-proxy/registry/metadata/v1/info" response = requests.req

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocations/v1/{allocationId}/choice-contexts/execute-transfer' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebugFields"

cURL Python JavaScript PHP Go Java Ruby curl --request GET \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/metadata/v1/instruments' import json import requests url = "https://example.com/api/validator/v0/scan-proxy/registry/metadata/v1/instruments" response

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocation-instruction/v2/allocation-factory' \ --header 'Content-Type: application/json' \ --data '{ "choiceArguments": {}, "excludeDebugFields": false

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocation-instruction/v2/{allocationInstructionId}/choice-contexts/withdraw' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "exclu

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocation/v2/settlement-factory' \ --header 'Content-Type: application/json' \ --data '{ "choiceArguments": {}, "excludeDebugFields": false }'

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocation-instruction/v2/{allocationInstructionId}/choice-contexts/accept' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "exclude

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocation-instruction/v1/allocation-factory' \ --header 'Content-Type: application/json' \ --data '{ "choiceArguments": {}, "excludeDebugFields": false

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocations/v1/{allocationId}/choice-contexts/cancel' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebugFields": false }'

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocations/v2/{allocationId}/choice-contexts/cancel' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebugFields": false }'

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocations/v2/{allocationId}/choice-contexts/withdraw' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebugFields": false

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/allocations/v1/{allocationId}/choice-contexts/withdraw' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebugFields": false

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v2/{transferInstructionId}/choice-contexts/withdraw' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDe

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v1/transfer-factory' \ --header 'Content-Type: application/json' \ --data '{ "choiceArguments": {}, "excludeDebugFields": false }'

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v2/transfer-factory' \ --header 'Content-Type: application/json' \ --data '{ "choiceArguments": {}, "excludeDebugFields": false }'

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v2/{transferInstructionId}/choice-contexts/reject' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebu

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v1/{transferInstructionId}/choice-contexts/accept' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebu

cURL Python JavaScript PHP Go Java Ruby curl --request POST \ --url 'https://example.com/api/validator/v0/scan-proxy/registry/transfer-instruction/v1/{transferInstructionId}/choice-contexts/reject' \ --header 'Content-Type: application/json' \ --data '{ "meta": {}, "excludeDebu