The getdeploymentinfo RPC returns an object containing various state info regarding deployments of consensus changes.
getdeploymentinfo ( "blockhash" )
*bitcoin-cli help getdeploymentinfo
getdeploymentinfo ( "blockhash" ) Returns an object containing various state info regarding deployments of consensus changes. Arguments: 1. blockhash (string, optional, default="hash of current chain tip") The block hash at which to query deployment state Result: { (json object) "hash" : "str", (string) requested block hash (or tip) "height" : n, (numeric) requested block height (or tip) "deployments" : { (json object) "xxxx" : { (json object) name of the deployment "type" : "str", (string) one of "buried", "bip9" "height" : n, (numeric, optional) height of the first block which the rules are or will be enforced (only for "buried" type, or "bip9" type with "active" status) "active" : true|false, (boolean) true if the rules are enforced for the mempool and the next block "bip9" : { (json object, optional) status of bip9 softforks (only for "bip9" type) "bit" : n, (numeric, optional) the bit (0-28) in the block version field used to signal this softfork (only for "started" and "locked_in" status) "start_time" : xxx, (numeric) the minimum median time past of a block at which the bit gains its meaning "timeout" : xxx, (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in "min_activation_height" : n, (numeric) minimum height of blocks for which the rules may be enforced "status" : "str", (string) status of deployment at specified block (one of "defined", "started", "locked_in", "active", "failed") "since" : n, (numeric) height of the first block to which the status applies "status_next" : "str", (string) status of deployment at the next block "statistics" : { (json object, optional) numeric statistics about signalling for a softfork (only for "started" and "locked_in" status) "period" : n, (numeric) the length in blocks of the signalling period "threshold" : n, (numeric, optional) the number of blocks with the version bit set required to activate the feature (only for "started" status) "elapsed" : n, (numeric) the number of blocks elapsed since the beginning of the current period "count" : n, (numeric) the number of blocks with the version bit set in the current period "possible" : true|false (boolean, optional) returns false if there are not enough blocks left in this period to pass activation threshold (only for "started" status) }, "signalling" : "str" (string, optional) indicates blocks that signalled with a # and blocks that did not with a - } }, ... } } Examples: > bitcoin-cli getdeploymentinfo > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getdeploymentinfo", "params": []}' -H 'content-type: text/plain;' http://127.0.0.1:8332/