Bitcoin · Ordinals · technical lead · 2024
Pizza Ninjas — 1,500 Ordinals inscribed, one #1 at Sotheby’s.
1,500-piece generative PFP collection inscribed on Bitcoin Ordinals in January 2024. Raised ~45 BTC at launch, 217 BTC total volume, 1,082 holders, $1.02M market cap today. The Angel (#1) later sold at Sotheby's for $139,700. Technical lead by David Dacruz.
By the numbers
1,500
Ordinals inscribed on Bitcoin
~45 BTC
Raised at launch
217 BTC
All-time secondary volume
1,082
Unique holders
The problem
Inscribing 1,500 unique pieces at scale on Bitcoin is a coordination problem more than a technical one. Fee spikes, mempool instability, and inscription UTXO management can sink a drop in an afternoon.
The collection also needed recursive inscriptions — children referencing parent art — so composability had to survive the block-by-block variance of mining priority.
On top of that, the brand had to hold after launch. An Ordinals drop that ships without a follow-up loses mindshare inside a quarter.
What I did
Four moves that made the drop work.
Inscription pipeline built for mempool reality
Written around the assumption that fees would 3× without warning (they did). Batched inscription with per-batch fee recalculation, retry handling, and an operator dashboard for drift. The collection inscribed clean — no lost UTXOs, no duplicated inscriptions.
Recursive composability pattern
Child inscriptions referenced parent art via ord recursive endpoints — on-chain, trustless, permanent. This pattern later became the foundation for Pizza Pets, where pet state evolves via recursive interactions.
Pizza Pets — the first on-chain pet
Follow-on collection built as a Bitcoin-native Tamagotchi. Feed your pet to keep it alive; it dies on-chain and exits the supply permanently. Deflationary by design. Logged over 1 million feeding interactions in its first year.
Sotheby’s — proof-of-work sold in an auction house
The Angel (#1) sold for $139,700 in a Sotheby’s digital art auction. Bridged Bitcoin-native art to a traditional audience that had never held a wallet — a proof-of-surface that Ordinals could live outside the crypto-native bubble.
What transferred
Patterns that outlive the drop.
- The inscription pipeline approach (batch, recalc, retry, monitor) transfers to any drop on Bitcoin.
- Recursive inscriptions aren't just a PFP trick — they're the cleanest pattern for on-chain composability that outlasts any marketplace.
- The Pizza Pets loop (on-chain state that can die) is a template for games where economic gravity is the mechanic, not the exception.
Stack
- Bitcoin Core + ord protocol
- Recursive inscription endpoints
- Runes (Pizza Pets)
- Custom batching + mempool-aware fee logic
- Node infra + monitoring
Free download · 6 pages · PDF
What I learned shipping 1,500 Ordinals on Bitcoin.
Pre-launch, launch-day, and the 90 days after — with the mistakes that cost real BTC. Ordinals, Runes, and beyond.
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