Creative Blockchain
💃 Dance & Choreography · leaps and jumps

LeapChain Ledger · vault

Mint NFTs of signature leaps to prove originality and enable commercial licensing. A bespoke Solidity mandate vault on Hedera testnet holds the per-transaction cap, daily cap, expiry and revocation switch for the agent that acts here — the contract refuses an over-cap cart before a single tinybar moves, and the seller binds the settled hash back to it.

Agentic commerce on Hedera (A2A · AP2 · UCP)· mandate vault
Section · Onchain

The primitive.

full primer →

The onchain primitive runs at the right moment in the flow and surfaces a clear, verifiable result that choreographers can act on without web3 jargon.

Why this primitiveSpending authority for an autonomous agent is on-chain state no native service models, so this is the rare case where a contract earns its deploy: the human's limits are enforced by the ledger, not by the agent's good manners.

Kernel
an agent-to-agent negotiation loop — A2A 0.3 JSON-RPC tasks carrying AP2 Intent / Cart / Payment mandates, or a UCP signed checkout under RFC 9421 — settled with x402 in HBAR or HTS USDC on Hedera testnet and, where authorisation itself is on-chain state, bound by a bespoke mandate-vault contract verified on HashScan
Drives the UI as
an agent flow log that shows the offer, the counter, the signed cart, the mandate check and the settled payment, every artifact linked to HashScan
Appendix · Secrets

Required keys.

HEDERA_OPERATOR_ID
Hedera testnet account id (0.0.xxxxxx). Create and fund it free.
open ↗
HEDERA_OPERATOR_KEY
ECDSA private key for that account, from the Hedera portal dashboard.
open ↗
REOWN_PROJECT_ID
Free project id powering the HashPack pairing modal.
open ↗
HEDERA_RPC_URL
Optional. JSON-RPC relay, defaults to the public Hashio endpoint.
open ↗
PINATA_JWT
Pins images / JSON / manifests to IPFS.
open ↗

Add these in your Lovable project under Settings → Secrets before pasting the prompt below.

Appendix · Mega-prompt

The build prompt.

Paste into a fresh Lovable project. Make sure all five secrets above are set first. read the build strategy →

Loading the mega-prompt…
Hedera testnet HashScan ↗
Appendix · Market

Market sizing.

TAM
$2.5B
dance instructional and rights management
SAM
$250M
digital move-specific licensing
SOM
$25M
NFT leap move rights holders

Indicative figures for hackathon pitches — refine with your own research before raising.

See also

Adjacent entries.

leaps and jumps
LeapChain Ledger
Mint NFTs of signature leaps to prove originality and enable commercial licensing.
leaps and jumps
Grand Jeté Auth · x402
A motion-capture validation engine for elite dancers. Pay 0.05 USDC per frame to cross-reference your leap's trajectory, hang-time, and extension against a verified signature database. Successful matches generate a unique, sub-cent proof-of-authenticity, allowing choreographers to charge micro-royalties every time their specific technique or sequence is 'called' in a commercial performance or AI-generated animation.
movement attribution
Choreo Ledger · a2a
Securely prove original choreography ownership and timestamp creations on a public ledger. Two agents — a buyer acting for the artist and a seller acting for the rights holder — negotiate this over A2A 0.3 tasks and settle the agreed price in HBAR or HTS USDC, with every turn of the conversation receipted on Hedera.
event access control
Dance NFT Tickets · ap2
Sell and verify exclusive dance event tickets as tradable NFTs on-chain to prevent fraud. The buyer's agent states an IntentMandate with hard caps, the seller answers with a signed CartMandate, and a PaymentMandate carries the Hedera settlement hash back — so an autonomous purchase leaves a signed, auditable trail from intent to receipt.