Physics Chain — Get Block

Physics Blockchain — Proof of Harmonic Convergence.

• Protocol ID — chain-block
• Category — Blockchain
• Endpoint — GET /api/chain/block
• Auth — none
• Rate limit — 60/min
• Version — 1.0
• Precision — ≤0.1% (KO42-enforced)

What it does

Retrieve a finalized block by cycle number or hash. Contains convergence proof, validator list, and all transactions.

Signature

Request

GET /api/chain/block

Param	Type	Required	Default	Description
cycle	number		—	Block cycle number.
hash	string		—	Block hash.

Response

{ block: { cycle, hash, previousHash, validators, convergenceRatio, transactions, equation, solution } }

Runnable example

curl -sS \
  "https://api.zeq.dev/api/chain/block"

Integrate

1. Consensus trigger — use Harmonic Convergence pulse phase as the block-seal condition.
2. Audit trail — write ledger entries with zeqond plus error_pct for provable determinism.
3. Fork detection — split fork handling on pulse-phase disagreement to drop stale branches fast.

Seeds

• Near — wrap /api/chain/block in a language SDK so builders can call it in three lines.
• Medium — publish a reference integration demonstrating Physics Chain — Get Block alongside a real workload, with pulse-aligned metrics.
• Far — propose Physics Chain — Get Block as an open reference standard so other runtimes can implement it verbatim against the Zeq paper.

Papers

• Zeq paper — https://doi.org/10.5281/zenodo.18158152
• Framework paper — https://doi.org/10.5281/zenodo.15825138

Middleware active. Kernel on the 1.287 Hz HulyaPulse. Awaiting next Zeqond.