Bitcoin Observation

An independently verifiable temporal proof from an external entropy source.

Observation ID
019fc8a9-fcf4-76d2-aa0b-0656f67b881b
Capture Method
Streaming
Captured At
Aug 3, 2026, 5:26 PM 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":"000000000000000000012b4c69f68c896092e4f875f4b03a2a76e1242d164957","height":960890,"time":1785777995}

04c6fc0f077098b0519668d5286442caa901afed0e1a1736729109779e0a1dfb

02a74a2612f56d199297289ace4d1c7adaa73b1ca4afc12e24f5ea7afb76753b

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: 019fc8a9-fcf4-76d2-aa0b-0656f67b881b

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 3, 2026, 5:26 PM UTC

Timestamp embedded in Bitcoin block 960890

Aug 3, 2026, 5:26 PM UTC

Real-time capture via WebSocket

17 seconds

Source timestamp was 17 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)
02a74a2612f56d199297289ace4d1c7adaa73b1ca4afc12e24f5ea7afb76753b
Public Key (Base64 encoded)
1hHbF5H5u8LiSp+nVMRb8duR2eGkOo5Q1JYfcmAtF28=
Signature (Base64 encoded)
vJHSt71/Qo5SG7HnxkadzQHMb++CxNeiSEKEJNI4E+boYYJoCcIuyYSj6+S+I4aNu42ocYH3nFIjYVJjE4abBA==
Verify Signature Manually

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