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Skydoge hard fork at block 1,976,112 · treasury anchor at block 1,980,144 · the story is written in advance, the facts are written by the chain. Every slot below says not yet until the block exists.
source: /chain.json (this site's mirror of the block explorer, once a minute) and /fork.json (the fork watch) · fork watch: not loaded
the first block under the new rules: at most 50,000 bytes, one sidechain-state commitment in its coinbase. the pool tag is read from the coinbase; a pool without a tag shows as untagged.
the honest census of the first day after the fork: how many blocks carried the commitment the new rules require. the window opens at the fork block; until then there is nothing to count.
block 1,980,144 = fork + 4,032. from here every sidechain treasury pointer is anchored to the coin set: a block that spends a pointer coin is refused. a pointer broken before the anchor is logged and its slot freezes; the chain does not halt.
the monument: one coin that stays in slot 2 so the first drivechain on Skydoge is never forgotten. from the anchor block its pointer is under the anchor rule. whether the coin is still in place is a question for a node (listactivesidechains), not for this page.
a castle in the sky, held up by hashrate: no king, no landlord. the walls are blocks, the pillars are GPUs, the drawbridge is a BIP300 peg. the gatehouse is the drivechain itself — hashrate escrows (BIP300) and blind merged mining (BIP301) inside the node, in C++.
until block 1,976,112 the gatehouse is masonry. from the fork block it is law: every block must carry the gate's commitment, or it is not a Skydoge block.
skydoge always liked sandwiches. its first proof of work was SHAndwich — SHA-256, then SHA-512, then SHA-256 again, a hash between two slices — before skydogehash, the chained multi-hash GPU proof of work it mines with today.
a hard fork is the same gesture one layer up: the old rules, a new slice of rules, and the chain carries on as one loaf. the proof of work does not change at this fork.
honest and short: the drivechain rules in the node had to change, and consensus rules change only one way — every node and pool switches at one fixed height. from block 1,976,112 every block must:
every node and pool runs skydoge 0.45.3 (signed binaries) before the height. a block built by an old miner is rejected from the fork height on; a pool-built coinbase without the commitment is invalid. the date is an estimate; the height is the rule.
4,032 blocks after the fork, at 1,980,144, the second half of the change arms: every sidechain treasury pointer is anchored to the coin set, and a block that spends a pointer coin is refused.
this page keeps both heights as empty slots and lets the chain write them. when a slot is filled, the block exists on the chain — verify it on the explorer yourself.