The Block Space Explorer

See the data inside every block.

Browse recent Bitcoin blocks, open the mosaic of each block's space, preview the inscriptions it carries, and verify your own record against the chain — all in the browser.

Live on-chain block data

Recent blocks

12 blocks

Block

#959,904

0000000000…d87721f428

Mined by

Braiins Pool

Timestamp

2026-07-28 00:20:09 UTC

Transactions

4,117

Size

1.56 MB

Inscriptions

Median fee

1.046870534438411 sat/vB

Space inscribed

42%

The space inside this block

inscriptionwitness dataempty

Hover a bright cell to inspect an inscription. Dim cells are inscribed witness data; empty cells are unused space.

Inscriptions in this block5 shown

// recursive inscription module
import bytes from '/content/82d27f80d16ai0';
export const render = (sat) =>
  decode(bytes).withProvenance(sat);

Code

#6,719,5043.40 KB

sat1,968,008,460,371

hash1a4c4c…dcd62c

id5e059d…e2bi0

<!doctype html>
<title>on-chain</title>
<canvas id="c"></canvas>
<!-- fully self-contained, seed 92139 -->

HTML

#6,719,5054.03 KB

sat1,968,030,550,025

hashb5b158…b575e2

id7b14a6…4dei0

// recursive inscription module
import bytes from '/content/6ddef89c05abi0';
export const render = (sat) =>
  decode(bytes).withProvenance(sat);

Code

#6,719,5065.21 KB

sat1,968,036,234,954

hashbb58a9…d3b42b

id5d0fd4…12ai0

<!doctype html>
<title>on-chain</title>
<canvas id="c"></canvas>
<!-- fully self-contained, seed 44459 -->

HTML

#6,719,507965 B

sat1,968,021,439,875

hash2b00e3…01a5d5

id090517…93bi0

{
  "standard": "model-attestation/v1",
  "model": "sonnet-4",
  "weights_sha256": "e74a98d08d97deaae1d1b99d4992d8fe5f7e94befc7e66e8524ced5a75b615bc",
  "dataset_fingerprint": "fc4a82307316e671f9a6eb89e305dee7",
  "anchored_by": "agent://60f97f97",
  "n": 4
}

JSONepic

#6,719,5082.51 KB

sat1,968,011,303,241

hashb61234…09c32a

ida62ee3…e22i0

Verify a record

Demo

Paste text or drop a file. The SHA-256 hash is computed entirely in your browser — nothing is uploaded — then shown as it would appear in a proof-of-inscription anchored to Bitcoin.

Demonstration only — no transaction is broadcast and nothing is written on-chain. It shows the shape of a real proof-of-inscription.