[PastaPastaPasta]

Problem

Insight stops working when Dash Core's V24 hard fork activates. From the activation block on, every coinbase carries a CbTx v4 payload. The @dashevo/dashcore-lib 0.22 this package pins rejects it with Failed to parse payload: raw payload is bigger than expected. Two places break:

• getBlock: Block.fromString throws inside the RPC callback, so block pages fail.
• ZMQ rawtx handler: tx.fromString throws on every new coinbase, and the exception escapes the ZMQ socket's message handler.

Testnet already crossed this at block 1,578,000. Mainnet signalling starts today (2026-11-09), and the earliest activation is late November.

Fix

• Library bump: @dashevo/dashcore-lib goes to ^0.26.1, which reads CbTx v4 and the other V24 payloads (version 2 asset locks and unlocks, ProTx v3). The package version goes to 7.0.6.
• ZMQ txid: the handler now notifies address subscribers with the parsed tx.hash. From V24, a version 2 asset unlock's txid leaves out its quorum signature, so the old hash of the raw bytes no longer matches Core's txid.
• Parse failures: a payload dashcore-lib can't parse no longer crashes the process. The ZMQ handler logs and skips the transaction, and getBlock returns an error.
• CI: moved off the retired ubuntu-20.04 runners, with actions bumped to v4 and Node 12 replaced by Node 20. dashcore-lib 0.26 needs Node 16 or later. The release job now sets up Node too.

Proof

• New unit tests use real testnet blocks: 1,577,999 (CbTx v3) and the activation block 1,578,000 (CbTx v4). Both were checked by recomputing the X11 header hash and the merkle root. A third test uses a Core v24 regtest version 2 asset unlock whose txid and instanceHash come from decoderawtransaction.
• They fail without the fix: with dashcore-lib 0.22.0, the two CbTx v4 tests fail with the production error. Without the lib/ changes, the asset-unlock and parse-failure tests fail.
• Full suite: npm test passes (382) and jshint is clean on Node 20.
• End to end: the insight-api companion PR adds a functional test. It runs Dash Core 24.0.0 on regtest, activates V24, and checks Insight's HTTP API on blocks, transactions and addresses from both sides of the fork.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes

  • Improved transaction and block parsing for Dash Core v24 data, including activation blocks and asset-unlock transactions.
  • Address subscribers now receive the correct transaction ID for asset-unlock transactions.
  • Malformed transaction or block data is handled with clearer errors; invalid transactions no longer trigger address notifications.

• Maintenance

  • Updated the project’s release and test environments.

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Commits

Reviewing files that changed from the base of the PR and between 6b8d88c and 2027c2d.

Files selected for processing: 3

• .github/workflows/test_and_release.yml
• lib/services/dashd.js
• test/services/dashd.unit.js

Walkthrough

The service now parses ZMQ transaction buffers and uses parsed transaction hashes for address notifications. It also returns block parsing errors through the retry callback. The pull request adds Dash Core v24 test fixtures and tests, updates the @dashevo/dashcore-lib dependency, and updates CI runtimes and package metadata.

Changes: Transaction and block parsing

Layer / File(s)	Summary
ZMQ transaction parsing and notifications lib/services/dashd.js, package.json, test/data/core24-asset-unlock-v2.json, test/services/dashd.unit.js	The ZMQ handler parses transaction buffers with Transaction.fromBuffer and uses the parsed transaction hash for address notifications. Tests cover activation-height coinbases, asset-unlock transaction IDs, and malformed transactions.
Block parsing errors lib/services/dashd.js, test/data/testnet-v24-activation-blocks.json, test/services/dashd.unit.js	getBlock returns parsing errors through the retry callback. Tests cover activation-block parsing and serialization, and malformed block data.

CI runtime and release metadata

Layer / File(s)	Summary
CI runtime and package version .github/workflows/test_and_release.yml, package.json	The test and release jobs use Ubuntu 24.04, updated actions, and Node.js 20. The package version changes from 7.0.5 to 7.0.6.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Merge Risk: Minimal · previous review 6b8d8

No actionable issue remains from this review; the change is mergeable after normal checks.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly identifies the main change: keeping Insight working with Dash Core V24 coinbases.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 1 functions across 2 files. (4 skipped: 4 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

Finishing Touches

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Prompt to fix all issues

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Failed pre-merge checks:
- Docstring Coverage:
Write docstrings for the functions missing them to satisfy the coverage
threshold.

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Review info

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• Source mode: Auto
• Repository: Unavailable
• Branch: Unavailable
• File: No configuration file from this repository applied
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• Layers: defaults
• Review profile: CHILL
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• Run ID: 2b859c52-ac33-465f-974e-5f9d2f4dbe0e

Commits

Reviewing files that changed from the base of the PR and between f0569b9 and 6b8d88c.

Files ignored due to path filters: 1

• package-lock.json is excluded by !**/package-lock.json

Files selected for processing: 6

• .github/workflows/test_and_release.yml
• lib/services/dashd.js
• package.json
• test/data/core24-asset-unlock-v2.json
• test/data/testnet-v24-activation-blocks.json
• test/services/dashd.unit.js

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