ledger · checkpoint · seq 4

Checkpoint seq 4

anchorconfirmed · solana mainnet

The seal for the UTC period beginning 2026-08-12. The whole package — body, signature, and commitment — is published at /ledger/checkpoints/4.json, and it verifies against the key on the trust anchor page with no network and no chain.

seq: 4
period start: 2026-08-12T00:00:00Z
sealed at: 2026-08-13T00:05:51.750Z
previous link: 27b0ee4c986f363d545e9b83e2efd073743a5a94f5ca926cdd2855cb5a3387c6
state root: 62dbad3b9b22fb3eb329838c47ac4c45750d8f42d3c53fb08e2c1774dbbc2e4c
commitment: b43182bcc0aae6ffa9853032567b14f7869ff5573c1b863f1bbb94770edd3b43040000000000000027b0ee4c986f363d545e9b83e2efd073743a5a94f5ca926cdd2855cb5a3387c662dbad3b9b22fb3eb329838c47ac4c45750d8f42d3c53fb08e2c1774dbbc2e4c
signer kid: 403bcd73e051e602b1b2e823f193c8d6e74aee8ed6cd37d524b8f82b7f89828c

The anchor

This checkpoint’s commitment is carried in the memo of a confirmed Solana mainnet transaction, so the seal is externally witnessed: an independent record that this commitment existed by that block, held by a party with no stake in ours.

state: confirmed
transaction: 31sbGTVLzMHW4K32dM9kFSMGEPYC5e3aFp6ncC6WysShBqgoViLk46PxYuyBFFgoxHiLGQ3rcP8ZZz4HcBbeybTA
explorer: https://explorer.solana.com/tx/31sbGTVLzMHW4K32dM9kFSMGEPYC5e3aFp6ncC6WysShBqgoViLk46PxYuyBFFgoxHiLGQ3rcP8ZZz4HcBbeybTA

witness

The chain witnesses a commitment and nothing more. It does not read the ledger, re-run any work, or examine a signature — a transaction proves when a string was published, never that the work behind it was done correctly. The proof of that is the ML-DSA signature over the body, checked against the published key.

Neighbours

A checkpoint’s prev_link is what makes the chain a chain: seals are read in order, and a gap is a question, not a rounding error.

Previous: seq 3, period 2026-08-11
All seals: the trust anchor page