Echoes in the Blockchain

Extracted, decoded, and filtered OP_RETURN messages. Permanent and immutable entries on the Bitcoin ledger.

⚠️ Decentralized Notice ⚠️

The messages displayed on this site are extracted directly from the Bitcoin blockchain.

They may contain offensive or sensitive language.

These messages are historical blockchain data and do NOT reflect the views, opinions, or values of this site or its creators.

Proceed with awareness.

Data Transmission

You can reach me cryptographically at:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: User ID:	Hidden Blocks <hiddenblocks@corporate-digital.com>
Comment: Valid from:	9/23/2025 8:06 PM
Comment: Type:	255-bit EdDSA (secret key available)
Comment: Usage:	Signing, Encryption, Certifying User IDs
Comment: Fingerprint:	69FD7621C1FB32D763A295D832DDFE9B04CACD5E

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=OQ2M
-----END PGP PUBLIC KEY BLOCK-----

How this works

This site parses the ~700gb bitcoin blockchain and extracts all OP_RETURN fields.

It then filters out messages that are less than 50% ASCII letters and do not contain at least one space. Additionally, it filters out non-message transaction noise with a custom ruleset.

New messages are retrieved every 6 hours.

Please consider supporting the site to help keep it running.