The origin story
"The chain killed them. The encore brought them back."
Act I — the opera opens, July 2021
In July 2021 a project called Fantums of Opera launched on Fantom Opera (chain ID 250). It was marketed as the first ERC-721 NFT collection on Fantom. The mint was a leading-zero proof-of-work puzzle — players hammered nonces in the browser until they "found" a Fantum with the right hash prefix. Rarer Fantums had more leading zeros. The mechanic was called Fantum Finding and it was conceptually beautiful even if it locked out every mobile user.
The collection capped at 10,860 supply. Each Fantum was a Pac-Man-shaped ghost in pumpkin orange with two huge googly eyes, a small "O" mouth, and operatic costuming — top hats, red velvet capes with white fur trim, candelabras, daggers, microphones. The token's permanent identity was a 32-byte Keccak hash (the hashOf(uint256) view), and rarity rode on that hash.
The play loop was PvP duels for 100 FOO. Winner takes the pot. Loser gets sent to 0x000...dEaD. Permanent.
Two utility tokens orbited the NFT: FOO (the duel currency) and RIP (added September 2021). The team built a marketplace, a daycare-breeding system, seasonal mini-games. The Discord called the project owner TheConductor.
Act II — the curtain falls
By mid-2026 the music had stopped. api.fantums.com — the centralised metadata host that served every token's image — started returning 502 across the board. Wayback Machine had cached seven of the 10,860 JSONs. Seven. The art was unviewable. The frontend at fantums.com followed. The original Discord went quiet.
Then Fantom announced Opera's shutdown: 2026-06-30 at 17:00 GMT. The chain wasn't going to migrate the assets. The state would persist for reading until the deadline, then go dark.
| Casualty | Status |
|---|---|
api.fantums.com metadata | 502 across all 10,860 tokens |
Frontend at fantums.com | 502 |
| Image generator code | Never open-sourced; not recovered |
| Wayback cached PNGs | 7 of 10,860 |
| Original Discord | Inactive |
| The chain itself | Shutting down 2026-06-30 |
Of 10,860 minted tokens, 8 had been permadeathed in duels — only 0.07%. The mechanic worked in theory but the friction killed engagement. The collection was dying twice over: first by play-data, then by chain.
Intermission — the snapshot
Before the chain went down, we captured everything we could pull directly from the FUM contract via RPC. At Fantom Opera block 121,669,337:
| Artifact | Captured |
|---|---|
| Owners per tokenId (1..10,860) | 10,860 rows |
On-chain DNA hashes (hashOf) | 10,860 hashes, all confirmed to start with 0x00 (validating the leading-zero PoW) |
| Unique addresses that ever received a Fantum | the full Transfer event history |
| Eligible EOA holders at the pin block | 1,602 |
| Burn / contract / zero-address exclusions | applied |
The metadata and pixel art are still gone. The DNA is not. Every original Fantum's Keccak hash is permanently preserved and the snapshot lives in data/fantum-snapshot/ in the public repo.
Act III — the encore on Sonic
Now we're back on Sonic (chain 146) with a new collection that:
- Preserves every original token's ancestor hash as an immutable
legacyDnaon every Reborn it descends from. - Rewards every address that ever held a Fantum with a reserved mint slot and an OG badge on each mint.
- Renders art on-chain so this collection cannot be black-holed by a dead server.
- Carries the duel-with-permadeath loop forward, but with insurance pools, paid revival, and signed-result fairness.
The opera company died with the chain. The encore is louder.
Last updated: 2026-05-21