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Add TSx Avalanche L1 chains (445, 454, 455)#8440

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Add TSx Avalanche L1 chains (445, 454, 455)#8440
VenomekPL wants to merge 3 commits into
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VenomekPL:add-tsx-chains-445-454-455

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@VenomekPL

@VenomekPL VenomekPL commented Jun 16, 2026

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Summary

Registers three incubating Avalanche L1 (Subnet-EVM) chain IDs for the TSx Network project:

Chain ID Name Role
445 TSx Bastion Permissioned mainnet (contract deployer allowlist)
454 TSx Testnet 1-of-1 testnet bootstrap
455 TSx Horizon Open mainnet (2-of-3 PoA)

Reserved Avalanche endpoints (standard subnets.avax.network pattern):

Chain ID RPC Explorer
445 https://subnets.avax.network/tsx-bastion/mainnet/rpc https://subnets.avax.network/tsx-bastion
454 https://subnets.avax.network/tsx-testnet/mainnet/rpc https://subnets.avax.network/tsx-testnet
455 https://subnets.avax.network/tsx-horizon/mainnet/rpc https://subnets.avax.network/tsx-horizon

Companion Avalanche subnet list PR: chainstacklabs/subnetlist#30

Status

Submitted as incubating — RPC/explorer URLs follow Avalanche subnet conventions and will become active after P-Chain L1 deployment.

Test plan

  • Local tools/schemaCheck.js passes
  • CI JSON schema check
  • Flip status to active once subnets are live

Register incubating TSx network chain IDs ahead of mainnet launch:
- 445 TSx Testnet (1-of-1)
- 454 TSx Bastion (permissioned mainnet, deployer allowlist)
- 455 TSx Horizon (open mainnet)

Co-authored-by: Cursor <cursoragent@cursor.com>
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You successfully submitted a PR! Due to the amount of PRs coming in: we will only look at PRs that the CI is happy with. We can also not hold your hand getting the CI green - just look how others that where merged did it and RTFM. So as long as there is any CI check that reports an error - no human will look at this. You might be able to ask for some support after supporting the project - e.g. by sending funds to lists.eth. When you fixed things after a requested change - then you also need to (re-)request a review.

AngeIV and others added 2 commits June 16, 2026 21:48
455 remains TSx Horizon (open mainnet).

Co-authored-by: Cursor <cursoragent@cursor.com>
Reserve TSx L1 endpoints on the standard Avalanche subnet path pattern
ahead of P-Chain deployment.

Co-authored-by: Cursor <cursoragent@cursor.com>
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