Sync and validate the Bitmark header chain in this tab with the bitcoin-kernel engine — every header's linkage (SHA256d identity) and structure checked as it arrives, streamed from a real Bitmark peer (port 9265) over the bridge. Bitmark's PoW is multi-algo, so difficulty is delegated (not re-checked) — the chain's shape is validated, not its work. home · wallet
idle
Headers are validated by the same HeaderEngine that validates Bitcoin, with btm:mainnet params and
multiAlgoPow:true (PoW + difficulty + version rules skipped, linkage kept). The chain persists to OPFS, so it
resumes across reloads. Proven in test-headers.mjs (2,000 real headers validated). ~2.4M blocks — full sync is slow;
leave it running.