Inscribe
Commit data and attestations to Bitcoin — simply and cost-aware. Full inscriptions for compact, high-value records; hash anchors for everything larger.
Inscribe · Verify · Display
The trusted data layer for the digital and AI economy.
Built on Bitcoin's immutable block space. Inscribe data permanently, verify it trustlessly, and see everything inside every block.
959,886Live
Current block height
81.2M
Total inscriptions
35.8 GB
Data inscribed
Live on-chain network statistics
The trust gap
The economy runs on data it cannot trust.
The digital economy runs on data; the AI economy runs on it completely. Yet that data sits on mutable, opaque, revocable infrastructure — editable in silence, deletable by its host, fabricable at scale. As autonomous agents act on data and on each other's outputs, the missing piece is a shared, verifiable substrate of truth.
Silent mutability
Records can be edited after the fact, with no trace that the original ever differed.
Custodial dependence
Data lives at the mercy of a host that can revoke, lose, or quietly alter it.
Unclear provenance
Where data came from — and whether it was tampered with — is rarely provable.
Synthetic indistinguishability
Generative models fabricate content indistinguishable from authentic records.
Audit lag
Verification happens long after decisions are made — too late to prevent harm.
None of these are solved by another database. They are solved by anchoring truth to a ledger no one can rewrite.
Why Bitcoin
The strongest trust anchor that exists.
If the goal is data no one can quietly change, you want the ledger that is hardest to change. That is Bitcoin — by a wide margin, and for the foreseeable future.
- Most secure proof-of-work; the most expensive ledger on earth to rewrite
- Most decentralized — no admin, no company, no one who can edit history
- Durable across decades, independently verifiable by anyone running a node
Honest constraints — by design
- Scarce, priced block space
- We anchor high-value records, not bulk storage.
- ~4MB witness limit per block
- Large objects are timestamped by hash, stored off-chain.
- Not natively programmable
- Logic lives in the index and proofs, never in consensus.
The principle: anchor, not dump.
Full on-chain storage — not pointers
Typical NFT / record
on-chain→ a link →off-chain file
The chain holds only a pointer. If the host disappears, the link breaks and the "permanent" asset is gone.
Bitcoin inscription
on-chain⊃ contains ⊃the actual data
The content lives inside the block itself. As long as Bitcoin exists, the data exists — unaltered, with nothing to break.
Three pillars
Inscribe. Verify. Display.
One pipeline from raw data to public, provable truth — for people, enterprises, and autonomous AI agents alike.
Verify
Index everything, deterministically. Then let anyone prove — with a Bitcoin-anchored cryptographic proof — that a piece of data existed at a specific block height and has not changed since.
sha256(data)→txid : vout→block #height
Display
Surface the full data contents of every block's space in a public, searchable explorer. This is the literal meaning of .space — the data inside every block, made visible.
Open the Block Space ExplorerHow it works
A layered stack from chain to agent.
Authority flows from the bottom up: only Bitcoin is trusted. Every layer above is reproducible, replaceable, and verifiable against the chain beneath it.
Anchoring layer — Bitcoin
consensusFull inscriptions for compact, high-value records; hash anchors that cheaply timestamp larger off-chain objects; recursive inscriptions for modular, composable content.
Indexing & retrieval
deterministicA deterministic, reproducible index derived entirely from the chain. It makes data fast to find — but is never itself a source of authority.
Verification
proofsProof-of-inscription ties any piece of data to a transaction and a block height, so existence and integrity can be checked against Bitcoin directly.
Display
explorerThe block-space explorer renders the contents of every block's space — public, searchable, and screenshot-ready.
AI agent access layer
APIProgrammatic anchoring of decision logs, model attestations and dataset fingerprints — and programmatic verification before an agent acts.
Use cases
Two economies, one substrate of truth.
The same primitive — provable, unalterable, enduring data — serves the digital economy and the AI economy alike.
Digital economy
- Document & credential timestamping
- Provenance & anti-counterfeiting
- Verifiable audit logs
- Permanent publishing
- Fully on-chain collectibles & assets
AI economy
- Training-data provenance
- Model attestation & versioning
- Decision & inference logs
- Content authenticity
- Agent accountability
The meaning of .space
Every block holds a finite, valuable space — increasingly filled with inscribed data. We open it to view.
And a space is more than storage. It is somewhere you can enter, explore, and build — a commons of verifiable truth that the digital and AI economies can inhabit.
Roadmap
From explorer to open data layer.
A directional path, not a fixed schedule. Each phase builds on a foundation that stays verifiable against Bitcoin.
Phase 101
Foundation
- Deterministic indexing pipeline
- Public block-space explorer
- Inscription & anchoring tools
Phase 202
Verification
- Proof-of-inscription formats
- Verification APIs
- Reproducible, auditable index
Phase 303
The AI data layer
- Programmatic agent interface
- Provenance, attestation & decision logs
- Standards integration
Phase 404
Decentralization & ecosystem
- Independent index operators
- Transparent governance
- Open developer ecosystem
Directional roadmap — subject to change as the protocol and ecosystem develop.
The space inside every block is already there. We open it to the world.
Explore live blocks today, or read how Bitcoin becomes the trusted data layer for the digital and AI economy.