Bitcoin Observation

An independently verifiable temporal proof from an external entropy source.

Observation ID
019fd10b-8008-74ce-9eca-38b1e39c50c9
Capture Method
Streaming
Captured At
Aug 5, 2026, 8:30 AM UTC
Verify Proof

Observation

Verifiable entropy captured from an external public source. The canonical JSON representation and its hash are used as input to the blockchain's Merkle tree.

{"hash":"000000000000000000000857135871a87c0df1e0c617bfa413a9205ab2af7a83","height":961133,"time":1785918599}

d38358057d17a1d3b9e25d2a141392318808001f0f9709335ed3448c5f922d23

30e763f9fc6fa066a4a26ee9d1f038e6a7d0bc865150b21a603761c59b22170b

SHA-256 composite hash binding the entropy data, metadata, and signing key id. This is the value placed as a leaf in the block's Merkle tree, and the value covered by the signature below.

Observation ID: 019fd10b-8008-74ce-9eca-38b1e39c50c9

Time Delta

Bitcoin blocks include a timestamp that represents when miners claim the block was created. However, Bitcoin's consensus rules allow block timestamps to vary from actual wall clock time. This section shows the time difference between the block's timestamp and when Truestamp captured it.

Aug 5, 2026, 8:29 AM UTC

Timestamp embedded in Bitcoin block 961133

Aug 5, 2026, 8:30 AM UTC

Real-time capture via WebSocket

21 seconds

Source timestamp was 21 seconds behind capture time

Interpretation: A positive delta (block time ahead of capture) is normal and expected. Large deltas (several minutes or hours) may indicate clock synchronization issues with miners or intentional timestamp manipulation within consensus rules.

Signature Verification

Truestamp signed this observation's hash at capture. Verify the signature in any Ed25519 verifier using the observation hash, public key, and signature shown below. The active public key is also published at https://www.truestamp.com/.well-known/keyring.json.

Algorithm
Ed25519
Message (Observation Hash, Hex encoded)
30e763f9fc6fa066a4a26ee9d1f038e6a7d0bc865150b21a603761c59b22170b
Public Key (Base64 encoded)
1hHbF5H5u8LiSp+nVMRb8duR2eGkOo5Q1JYfcmAtF28=
Signature (Base64 encoded)
tCbztv/POi1wjfE2pk3XqIIMO1YrlfIOeUANt2PRH64roK5pNC8TJzt1z1+XCGMvEGHbz45SkeSLwLqmlZPQCQ==
Verify Signature Manually

Opens an external Ed25519 verification tool with all fields pre-filled.