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https://github.com/bitcoin/bips.git
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da9cdd6759
This removes the FAILING state and adds compulsory signalling during a new MUST_SIGNAL phase during the last retarget period prior to the timeout height. This ensures that if a deployment occurs using bip8 with lockinontimeout=false and timeoutheight=N, that a later deployment using bip8 with lockinontimeout=true and timeoutheight=K, where K<N that any chain where LOCKED_IN is reached prior to height K, will be accepted as valid by nodes using either set of deployment parameters. It also ensures that the soft-fork's changed rules are only enforced on chain a retarget period after signalling indicates enforcement is expected (which was not previously the case if the FAILING to ACTIVE transition took place).
34 lines
1 KiB
Text
34 lines
1 KiB
Text
digraph {
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rankdir=TD;
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node [style="rounded,filled,bold", shape=box, fixedsize=true, width=1.5, fontname="Arial"];
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edge [weight = 100];
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"DEFINED" -> "STARTED" [label="height >= start_height"];
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"STARTED" -> "MUST_SIGNAL" [label="height + 2016 >= timeoutheight AND lockinontimeout"];
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"STARTED" -> "FAILED" [label="height >= timeoutheight\nAND\nNOT lockinontimeout"];
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"LOCKED_IN" -> "ACTIVE" [label="always"];
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"MUST_SIGNAL" -> "LOCKED_IN" [label="always"];
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edge [weight = 1];
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"STARTED" -> "LOCKED_IN" [label="height < timeoutheight\nAND\nthreshold reached"];
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"FAILED" -> "LOCKED_IN" [style=invis];
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"DEFINED":sw -> "DEFINED":nw;
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"STARTED":sw -> "STARTED":nw;
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"ACTIVE":sw -> "ACTIVE":nw;
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"FAILED":sw -> "FAILED":nw;
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"STARTED" [fillcolor="#a0a0ff"];
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"MUST_SIGNAL" [fillcolor="#a0a0ff"];
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"LOCKED_IN" [fillcolor="#ffffa0"];
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"ACTIVE" [fillcolor="#a0ffa0"];
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"FAILED" [fillcolor="#ffa0a0"];
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{ rank=same; "STARTED" "MUST_SIGNAL" }
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{ rank=same; "FAILED" "LOCKED_IN" }
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{ rank=sink; "ACTIVE" }
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}
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