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Monorepo for Aesthetic.Computer aesthetic.computer
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Python
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This contract is the v6 production release with revenue enabled.
v6 CHANGES from v5:- Royalties immutable after keep (edit_metadata preserves royalties)
v5 features (preserved):- Default fee: 2.5 XTZ (revenue enabled by default)- Immutable content_hash: edit_metadata preserves content_hash (prevents orphaned bigmap entries)- Improved error messages with context
v4 features (preserved):- 10% Royalty Support: Automatic royalties on secondary sales (objkt.com compatible)- Emergency Pause: Admin can halt minting in emergencies- Admin Transfer: Customer service tool for edge cases
v3 features (preserved):- edit_metadata: Token owner can edit- token_creators: Tracks original creator for each token- Pre-encoded metadata bytes (TzKT/objkt compatible)- Fee system with withdraw capability- Burn and re-mint functionality
Key feature: Metadata bytes stored directly WITHOUT sp.pack(),ensuring compatibility with TzKT, objkt, and other Tezos indexers."""
import smartpy as spfrom smartpy.templates import fa2_lib as fa2
main = fa2.main
@sp.moduledef keeps_module(): import main
# Order of inheritance: [Admin], [<policy>], <base class>, [<other mixins>]. class KidLispKeepsFA2v6( main.Admin, main.Nft, main.OnchainviewBalanceOf, ): """ FA2 NFT contract for KidLisp Keeps (v6 - FINAL PRODUCTION).
v6 changes from v5: - Royalties immutable during metadata edits
v5 features: default fee 2.5 XTZ, immutable content_hash v4 features: royalties, emergency pause, admin transfer v3 features: attribution tracking + creator bigmap support """
def __init__(self, admin_address, contract_metadata, ledger, token_metadata): # Initialize on-chain balance view main.OnchainviewBalanceOf.__init__(self)
# Initialize the NFT base class main.Nft.__init__(self, contract_metadata, ledger, token_metadata)
# Initialize administrative permissions main.Admin.__init__(self, admin_address)
# Additional storage for metadata locking self.data.metadata_locked = sp.cast( sp.big_map(), sp.big_map[sp.nat, sp.bool] )
# Track content hashes to prevent duplicate mints # Maps content_hash (bytes) -> token_id (nat) self.data.content_hashes = sp.cast( sp.big_map(), sp.big_map[sp.bytes, sp.nat] )
# Track original creator for each token (v3) # Maps token_id -> creator address (the first minter) self.data.token_creators = sp.cast( sp.big_map(), sp.big_map[sp.nat, sp.address] )
# Contract-level metadata lock flag self.data.contract_metadata_locked = False
# Mint fee configuration (admin-adjustable) # v5/v6: Default fee set to 2.5 XTZ for revenue activation self.data.keep_fee = sp.mutez(2500000)
# v4: Emergency pause flag # When true, minting and metadata edits are disabled self.data.paused = False
# v4: Default royalty configuration # Basis points: 1000 = 10%, 2500 = 25% (max) # Applied to all new mints unless overridden self.data.default_royalty_bps = 1000 # 10% default
@sp.entrypoint def keep(self, params): """ Mint a new Keep token with minimal on-chain metadata.
Full metadata lives in IPFS (via metadata_uri). On-chain stores only the essential fields needed for display and deduplication.
Two modes: 1. Admin calling: mints to specified owner (for server-side minting) 2. User calling: mints to sender, requires fee payment (default 2.5 XTZ)
All bytes parameters should be raw hex-encoded UTF-8 strings. """ sp.cast(params, sp.record( name=sp.bytes, symbol=sp.bytes, description=sp.bytes, artifactUri=sp.bytes, displayUri=sp.bytes, thumbnailUri=sp.bytes, decimals=sp.bytes, creators=sp.bytes, royalties=sp.bytes, content_hash=sp.bytes, metadata_uri=sp.bytes, owner=sp.address ))
# Check if contract is paused assert not self.data.paused, "MINTING_PAUSED"
# Determine minting mode and owner is_admin = self.is_administrator_()
# Non-admin callers must pay the fee and can only mint to themselves if not is_admin: assert sp.amount >= self.data.keep_fee, "INSUFFICIENT_FEE" # User must mint to themselves (ensures they are firstMinter) assert params.owner == sp.sender, "MUST_MINT_TO_SELF"
# Check for duplicate content hash assert not self.data.content_hashes.contains(params.content_hash), "DUPLICATE_CONTENT_HASH"
# Get next token ID from the library's counter token_id = self.data.next_token_id
# Minimal on-chain token_info — full metadata in IPFS via "" token_info = sp.cast({ "name": params.name, "symbol": params.symbol, "description": params.description, "artifactUri": params.artifactUri, "displayUri": params.displayUri, "thumbnailUri": params.thumbnailUri, "decimals": params.decimals, "creators": params.creators, "royalties": params.royalties, "content_hash": params.content_hash, "": params.metadata_uri }, sp.map[sp.string, sp.bytes])
# Store token metadata self.data.token_metadata[token_id] = sp.record( token_id=token_id, token_info=token_info )
# Assign token to owner self.data.ledger[token_id] = params.owner
# Initialize as not locked self.data.metadata_locked[token_id] = False
# Store content hash to prevent duplicates self.data.content_hashes[params.content_hash] = token_id
# Track the original creator self.data.token_creators[token_id] = params.owner
# Increment token counter self.data.next_token_id = token_id + 1
@sp.entrypoint def mint(self, batch): """ Disable generic FA2 mint path. Keeps must be minted through `keep` so fee/dedup rules always apply. """ sp.cast( batch, sp.list[ sp.record( to_=sp.address, metadata=sp.map[sp.string, sp.bytes], ).layout(("to_", "metadata")) ], ) assert False, "MINT_DISABLED_USE_KEEP"
@sp.entrypoint def burn(self, batch): """ Disable generic FA2 burn path. Keeps must be burned through `burn_keep` so all indexes are cleaned. """ sp.cast( batch, sp.list[ sp.record( from_=sp.address, token_id=sp.nat, amount=sp.nat, ).layout(("from_", ("token_id", "amount"))) ], ) assert False, "BURN_DISABLED_USE_BURN_KEEP"
@sp.entrypoint def edit_metadata(self, params): """ Update metadata for an existing token.
Authorization: - Token owner only (current holder)
Respects pause flag (cannot edit when paused). content_hash and royalties are immutable — always preserved from original mint. """ sp.cast(params, sp.record( token_id=sp.nat, token_info=sp.map[sp.string, sp.bytes] ))
# Check if contract is paused assert not self.data.paused, "EDITING_PAUSED"
assert self.data.token_metadata.contains(params.token_id), "FA2_TOKEN_UNDEFINED"
# Check authorization: owner only is_owner = self.data.ledger.get(params.token_id, default=sp.address("tz1burnburnburnburnburnburnburjAYjjX")) == sp.sender
assert is_owner, "NOT_TOKEN_OWNER"
# Check if locked is_locked = self.data.metadata_locked.get(params.token_id, default=False) assert not is_locked, "METADATA_LOCKED"
# Preserve immutable content_hash + royalties from original metadata existing_info = self.data.token_metadata[params.token_id].token_info original_hash = existing_info.get("content_hash", default=sp.bytes("0x")) original_royalties = existing_info.get("royalties", default=sp.bytes("0x"))
# Update metadata self.data.token_metadata[params.token_id] = sp.record( token_id=params.token_id, token_info=params.token_info )
# Re-inject immutable fields (cannot be changed or removed via edit) self.data.token_metadata[params.token_id].token_info["content_hash"] = original_hash self.data.token_metadata[params.token_id].token_info["royalties"] = original_royalties
@sp.entrypoint def lock_metadata(self, token_id): """Permanently lock metadata for a token (admin or owner only).""" sp.cast(token_id, sp.nat)
assert self.data.token_metadata.contains(token_id), "FA2_TOKEN_UNDEFINED"
# Check authorization: admin or owner is_admin = self.is_administrator_() is_owner = self.data.ledger.get(token_id, default=sp.address("tz1burnburnburnburnburnburnburjAYjjX")) == sp.sender
assert is_admin or is_owner, "NOT_AUTHORIZED"
self.data.metadata_locked[token_id] = True
@sp.entrypoint def set_contract_metadata(self, params): """Update contract-level metadata (admin only, if not locked).""" sp.cast(params, sp.list[sp.record(key=sp.string, value=sp.bytes)])
assert self.is_administrator_(), "FA2_NOT_ADMIN" assert not self.data.contract_metadata_locked, "CONTRACT_METADATA_LOCKED"
for item in params: self.data.metadata[item.key] = item.value
@sp.entrypoint def lock_contract_metadata(self): """Permanently lock contract-level metadata (admin only).""" assert self.is_administrator_(), "FA2_NOT_ADMIN" self.data.contract_metadata_locked = True
@sp.entrypoint def set_keep_fee(self, new_fee): """ Set the keep fee required for minting. Admin only. Fee is in mutez (1 tez = 1,000,000 mutez). """ sp.cast(new_fee, sp.mutez) assert self.is_administrator_(), "FA2_NOT_ADMIN" self.data.keep_fee = new_fee
@sp.entrypoint def withdraw_fees(self, destination): """ Withdraw accumulated fees from the contract. Admin only. Sends entire contract balance to destination. """ sp.cast(destination, sp.address) assert self.is_administrator_(), "FA2_NOT_ADMIN" sp.send(destination, sp.balance)
@sp.entrypoint def burn_keep(self, token_id): """ Burn a token and remove its content_hash. This allows re-minting the same piece name. Owner only. """ sp.cast(token_id, sp.nat)
assert self.data.token_metadata.contains(token_id), "FA2_TOKEN_UNDEFINED" current_owner = self.data.ledger.get( token_id, default=sp.address("tz1burnburnburnburnburnburnburjAYjjX") ) assert current_owner == sp.sender, "NOT_TOKEN_OWNER"
# Get content_hash before burning token_info = self.data.token_metadata[token_id].token_info content_hash = token_info.get("content_hash", default=sp.bytes("0x"))
# Remove from registries if self.data.content_hashes.contains(content_hash): del self.data.content_hashes[content_hash]
if self.data.ledger.contains(token_id): del self.data.ledger[token_id]
del self.data.token_metadata[token_id]
if self.data.metadata_locked.contains(token_id): del self.data.metadata_locked[token_id]
if self.data.token_creators.contains(token_id): del self.data.token_creators[token_id]
# ===================================================================== # v4 ENTRYPOINTS (preserved in v5) # =====================================================================
@sp.entrypoint def pause(self): """ Emergency pause - stops minting and metadata edits. Admin only.
Use cases: - Security vulnerability discovered - IPFS infrastructure issues - Spam attack detected - Contract bug found
Note: Does NOT affect transfers (preserves FA2 composability) """ assert self.is_administrator_(), "FA2_NOT_ADMIN" self.data.paused = True
@sp.entrypoint def unpause(self): """ Resume normal operations after emergency pause. Admin only. """ assert self.is_administrator_(), "FA2_NOT_ADMIN" self.data.paused = False
@sp.entrypoint def set_default_royalty(self, bps): """ Set default royalty percentage for new mints. Admin only.
Args: bps: Basis points (100 = 1%, 1000 = 10%, 2500 = 25% max)
Example: set_default_royalty(1000) # 10% royalty """ sp.cast(bps, sp.nat) assert self.is_administrator_(), "FA2_NOT_ADMIN" assert bps <= 2500, "MAX_ROYALTY_25_PERCENT" self.data.default_royalty_bps = bps
@sp.entrypoint def admin_transfer(self, params): """Admin emergency transfer""" sp.cast(params, sp.record( token_id=sp.nat, from_=sp.address, to_=sp.address ))
assert self.is_administrator_(), "FA2_NOT_ADMIN" assert self.data.token_metadata.contains(params.token_id), "FA2_TOKEN_UNDEFINED"
current_owner = self.data.ledger.get(params.token_id, default=sp.address("tz1burnburnburnburnburnburnburjAYjjX")) assert current_owner == params.from_, "INVALID_CURRENT_OWNER"
self.data.ledger[params.token_id] = params.to_
def _get_balance(fa2_contract, args): """Utility function to call the contract's get_balance view.""" return sp.View(fa2_contract, "get_balance")(args)
def _total_supply(fa2_contract, args): """Utility function to call the contract's total_supply view.""" return sp.View(fa2_contract, "total_supply")(args)
@sp.add_test()def test(): """Minimal test to compile v6 contract.""" scenario = sp.test_scenario("KeepsFA2v6") scenario.h1("KidLisp Keeps FA2 v6 - Final Production Contract")
# Define test account admin = sp.test_account("Admin")
# Create empty initial state ledger = {} token_metadata = []
# Deploy contract contract = keeps_module.KidLispKeepsFA2v6( admin.address, sp.big_map(), ledger, token_metadata )
scenario += contract
scenario.p("v6: royalties immutable after keep") scenario.p("v5: Default fee = 2.5 XTZ, revenue enabled") scenario.p("v4 features: royalties, pause, admin transfer") scenario.p("v3 features: creator tracking")