BAZAARCARD

Early bitcoin NFTs were not immutable.

In November 2015, XCPCARDS.com solved this for several cards, BAZAARCARD included.

This was achieved by including the following text in a bitcoin transaction:

xcpcards.com/BAZAARCARD aFTBPiqT

The identifier aFTBPiqT is the jpeg's checksum which proves the card's design. Since this text is engraved on the blockchain, the proof can never be tampered with, nor can the timestamp be disputed.

This makes BAZAARCARD one of the first real crypto cards!

Techincal Details

The file's full sha-256 hash in hex and base64 encodings:
6854c13e2a93dfcb32d365849795e1b47c402f01532f4b397533ba9edc326f50
aFTBPiqT38sy02WEl5XhtHxALwFTL0s5dTO6ntwyb1A=

The identifier is a 48 bit truncated hash.

This is sufficiently strong, yet short enough to have the text fit inside a Bitcoin op_return message.

READ MORE

Full Set of Cards

The below cards were notarized by XCPCARDs.com

Most are from the Spells of Genesis project.

Click a card to view its details.