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other OP_RETURN ✓ Verified on-chain

Age of Chains — GUARDIANCARD (Woodcoin's Guardian, first card)

Written to the chain on 30 Oct 2016, block 436,596.

Block
436,596
Written
30 Oct 2016
Size
—
Format
UNKNOWN
Transactions
1

About this artifact

GUARDIANCARD ('Woodcoin's Guardian') is the first Age of Chains trading card, among the earliest Bitcoin NFT game cards; 777 copies. On-chain Counterparty asset genesis at block 436596 (2016-10-30), an OP_RETURN issuance; the project's launch was announced on BitcoinTalk on 2016-11-25, a few weeks after the on-chain issuance. Counterparty payloads are obfuscated by the protocol, so the contents are identified from Counterparty's own records rather than read directly from the transaction.

How it was stored

OP_RETURN explicitly marks an output as unspendable and lets it carry a small data payload. Unlike fake-address methods, it does not create a spendable-looking UTXO. That makes it the least deceptive standard way to place small data on-chain.

More about OP_RETURN
Proof · 1 transaction

Verified against the chain

Every byte shown here was read from these transactions. Open one in a block explorer to check it yourself.

Address
198G9eUjQuCn9Y21Pj4z6Cbx5JxnkoeQWL
Sources
https://tokenscan.io/asset/GUARDIANCARD · https://bitcointalk.org/index.php?topic=1692890.0 · https://www.ageofchains.com/portfolio/guardiancard/