kernel: add serialization method for btck_BlockHeader API #34401

1. 
   yuvicc commented at 6:50 am on January 25, 2026: contributor

   This adds serialization for btck_BlockHeader API. Also, updated the CheckHandle to compare the byte content instead of size.

   Follow-up to #33822 .

2. add: serialization method for block header in the kernel api. Also, fix `CheckHandle` to compare the byte content instead of sizes. d14cdea5cf
3. DrahtBot added the label Validation on Jan 25, 2026
4. 
   DrahtBot commented at 6:50 am on January 25, 2026: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34401.

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5. yuvicc renamed this:
   kernel: add serialization for btck_BlockHeader API
   kernel: add serialization method for btck_BlockHeader API
   on Jan 25, 2026

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yuvicc DrahtBot

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