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

#959,893

0000000000…a5eece44b9

Mined by

F2Pool

Timestamp

2026-07-27 22:21:00 UTC

Transactions

4,226

Size

1.81 MB

Inscriptions

Median fee

1.041323690962995 sat/vB

Space inscribed

64%

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 block6 shown

// recursive inscription module
import bytes from '/content/fce21e0e903bi0';
export const render = (sat) =>
  decode(bytes).withProvenance(sat);

Codeuncommon

#6,719,6004.41 KB

sat1,968,037,648,880

hash10f9d2…bbf9f4

id7c4936…52ci0

{
  "standard": "model-attestation/v1",
  "model": "llama-3.1-70b",
  "weights_sha256": "f18b9475f279ef850dd03be069728634a41727bf7973e8a8c985b977016b0467",
  "dataset_fingerprint": "cbc6e856f4f81e225c26efd7f36152df",
  "anchored_by": "agent://668168f8",
  "n": 1
}

JSON

#6,719,6011.36 KB

sat1,968,028,277,592

hash7b73b7…7e9062

id98cfd8…409i0

Timestamped to Bitcoin. This record cannot be edited, only superseded.

Text

#6,719,6025.10 KB

sat1,968,004,865,072

hash385284…3e19d9

id9969d8…4e9i0

{
  "standard": "model-attestation/v1",
  "model": "mixtral-8x22b",
  "weights_sha256": "4079bbac7b4fdb89d20225a622484e665766a41b65b0d30ad86985449ccf7772",
  "dataset_fingerprint": "dfaa2a79ffb6d76c61a71dc9ac309459",
  "anchored_by": "agent://1e6d646c",
  "n": 3
}

JSON

#6,719,6035.00 KB

sat1,968,046,832,898

hash65a33f…8a851f

id4e5040…cedi0

Image

#6,719,6042.20 KB

sat1,968,048,361,432

hash6ba790…9b9048

ide82a4f…8c1i0

// recursive inscription module
import bytes from '/content/0143450741f4i0';
export const render = (sat) =>
  decode(bytes).withProvenance(sat);

Code

#6,719,605398 B

sat1,968,020,055,376

hash6332f0…80781e

ida1bc5d…158i0

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.