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Technical Documentation

The First Contact Project

A technical overview of how messages and NFTs are composed, registered on-chain, encoded for radio transmission, and tracked across deep space via the SpaceSpeak infrastructure.

Atmospheric Opacity โ€” Why Radio Escapes

Earth's atmosphere absorbs most of the electromagnetic spectrum. The radio transparency window (roughly 1 cmโ€“10 m wavelength, 30 MHzโ€“30 GHz) is one of the few bands where signals can exit the atmosphere and propagate indefinitely into space. SpaceSpeak transmits in the 2โ€“5 GHz portion of this window โ€” the same band as NASA's Voyager deep space communications.

Atmospheric opacity across the electromagnetic spectrum โ€” showing the radio transparency window where SpaceSpeak operates
Blocked
Gamma / X-Ray / UV
Absorbed by upper atmosphere. Space telescopes required.
Window
Visible Light (~400โ€“700 nm)
Observable from Earth with atmospheric distortion.
Partly Blocked
Infrared (1โ€“100 ฮผm)
Most absorbed by COโ‚‚, Hโ‚‚O. Best from space.
Open Window
Radio (1 cm โ€“ 10 m)
SpaceSpeak 2โ€“5 GHz band. Atmosphere nearly transparent. Signal escapes to deep space.
Blocked
Long Radio (>10 m)
Reflected by ionosphere. Cannot escape to space.
01 โ€” The Transmission Medium

Why 2โ€“5 GHz Radio

The electromagnetic spectrum is mostly blocked by Earth's atmosphere. Gamma rays, X-rays, and ultraviolet light are absorbed in the upper atmosphere. Most of the infrared spectrum is absorbed by atmospheric gases. Long-wavelength radio waves (>10 m) are reflected off the ionosphere and cannot escape into deep space.

There is a narrow radio transparency window โ€” approximately 1 cm to 10 m wavelength (roughly 30 MHz to 30 GHz) โ€” where the atmosphere is nearly opaque to external radiation but allows outbound transmissions to pass through. This is the window that SpaceSpeak exploits.

First Contact operates in the 2.4โ€“5 GHz band. This is the same frequency range used by NASA's Voyager 1 and 2 probes, currently the farthest human-made objects from Earth. At these frequencies, the atmosphere is nearly transparent, beam divergence is manageable over interstellar distances, and parabolic dishes can tightly focus the signal.

02 โ€” SpaceSpeak Infrastructure

Transmitter Network

SpaceSpeak was founded by Dr. Peter Beery and operates a Phase I transmitter network in Tampa (FL) and Austin (TX), USA, and Brazil. Each site runs low-wattage transmitters coupled to parabolic dish antennas. The parabolic geometry focuses the broadcast into a tight beam, increasing effective radiated power by up to 300ร— compared to an isotropic antenna.

Phase II is an open, distributed STEM network of micro-transmitters. Each node uses Yagi directional antennas focused in a 20ยฐ cone โ€” keeping the signal coherent across interplanetary distances. Combined, the nodes create a mesh that can target different regions of sky, giving messages wider angular coverage in deep space.

SpaceSpeak has set a Guinness World Recordwith Fun Kids UK for the first radio programme transmitted to deep space. It has been featured on History Channel's Project Blue Book and YouTube Premium's Mind Field.

03 โ€” On-Chain Registry

FirstContact Smart Contract

Every transmission is registered on-chain before the radio signal is queued. The FirstContactRegistry contract accepts payments in K9 (Ethereum), native APE (ApeChain), or USDC (Arbitrum/Base), verifies the payment amount, and emits a TransmissionSent event containing:

  • transmissionId โ€” unique sequential ID on that chain
  • contentHash โ€” keccak256 of the message content, immutably linking on-chain record to the transmitted payload
  • payloadType โ€” TEXT (0), IMAGE (1), or NFT (2)
  • nftContract + tokenId โ€” for NFT payloads, the originating contract address and token ID are stored on-chain

For NFT payloads, the contract calls ownerOf() (ERC-721) or balanceOf() (ERC-1155) to confirm ownership at transmission time โ€” without taking custody of the NFT.

04 โ€” Multi-Chain Payments

Token Payment Matrix

First Contact supports four EVM chains, each with its own designated payment token. Token prices are dynamically quoted at current USD rates before submission.

ChainTokenTextImage / NFTNote
EthereumK9~2,381 K9~2,381 K9Flat rate ยท ERC-20
ApeChainAPE (native)8 APE8 APEFlat rate ยท APE buys back K9
ArbitrumUSDC$1$1 (flat)L2, low gas
BaseUSDC$1$1 (flat)L2, low gas

APE payments on ApeChain feed the K9 buyback mechanism โ€” aligning economic incentives with the token ecosystem. All price quotes are denominated in USD and converted at market rate at transaction time.

05 โ€” Signal Tracking

Distance & Milestone Calculation

Once the on-chain transaction is confirmed and SpaceSpeak queues the payload, the platform begins tracking signal distance using the formula:

distance_km = (now โˆ’ tx_timestamp_sec) ร— 299,792.458

This is compared against 30 pre-defined celestial milestones ordered by distance from Earth, from the ISS at 408 km to Tau Ceti at 11.9 light-years. Each time a signal passes a milestone, the user can share the achievement on X.

The 30 milestones span seven orders of magnitude โ€” requiring a logarithmic scale to visualize meaningfully. Early milestones (Moon, GPS belt, L2) are passed within seconds to minutes of launch. The outermost milestones (Proxima Centauri, Tau Ceti) will not be reached for thousands of years โ€” but the signal will still be traveling when it arrives.

06 โ€” ET Probability Context

How Likely Is Extraterrestrial Life

First Contact does not claim confirmed extraterrestrial contact today. What it does assume is statistical scale: our galaxy alone contains roughly 100โ€“400 billion stars, with planetary systems appearing to be common rather than rare.

Current exoplanet data suggests that a meaningful fraction of stars host rocky worlds, and a subset of those can exist in temperate zones where liquid water is possible. Even with conservative assumptions, this implies millions to billions of potentially habitable worlds in the Milky Way alone.

Zooming out, the observable universe contains on the order of trillions of galaxies. The project premise is simple: if star systems are this numerous, transmitting durable signals into space is a rational long-horizon bet on future discoverability โ€” by humans, post-humans, or non-human intelligences.

07 โ€” NFT Preservation

Why Transmitted NFTs Are Immortal

Digital assets โ€” including NFTs โ€” depend on the continued operation of servers, blockchains, and human infrastructure. If civilization were disrupted, every IPFS node, every Ethereum validator, and every metadata server could go dark. The NFT would cease to exist in any recoverable form.

A radio-transmitted NFT is different. The photons carrying the payload leave Earth at the speed of light and cannot be recalled, censored, or deleted. They require no servers, no validators, no energy input. They carry the content hash, contract address, token ID, and image data encoded into the radio waveform โ€” traveling perpetually through space.

Any sufficiently advanced receiver encountering the signal โ€” human or otherwise โ€” could reconstruct the original artifact. This is the premise of deep-time cultural preservation: the cosmos as the most durable storage medium in existence.

The Signal Never Stops

Once your payload exits Earth's atmosphere as a coherent 2โ€“5 GHz beam, no human or institution can stop it. It will pass the Moon in 1.3 seconds, Mars in 3 minutes, the heliopause in 16 hours, and Proxima Centauri in 4.24 years โ€” carrying your message, your NFT, or your voice into a universe that is 13.8 billion years old and counting.

c = 299,792,458 m/s โ€” the only speed that matters