Transaction 8def5a2499d549d8aedca8ba79100fb7ba175847731b9935fd525fc47ff537d5

Block #411442

2016-05-12 13:07:03 +0000 UTC (~8 years, 3 months ago)

BTC Burned: 🔥0.001 BTC🔥

Inputs

1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw

OP_DUP OP_HASH160 6f523d7e47eaa238f5b51cd64a50d57eef1018a3 OP_EQUALVERIFY OP_CHECKSIG pubkeyhash

Outputs

6a2769643fc7b8e4d1a261f8f6663ec853edce98443e5175d8ddb89870984e15be159b1227f39d4d4d

OP_RETURN 69643fc7b8e4d1a261f8f6663ec853edce98443e5175d8ddb89870984e15be159b1227f39d4d4d nulldata

1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw

OP_DUP OP_HASH160 6f523d7e47eaa238f5b51cd64a50d57eef1018a3 OP_EQUALVERIFY OP_CHECKSIG pubkeyhash

1111111111111111111114oLvT2

OP_DUP OP_HASH160 0000000000000000000000000000000000000000 OP_EQUALVERIFY OP_CHECKSIG pubkeyhash

How did this transaction burn BTC?

OP_RETURN outputs

OP_RETURN is a provably unspendable method that allows embedding of arbitrary data into the blockchain¹.

OP_RETURN outputs are used to embed data such as messages, commitments from systems like Stacks², or even files - there are no constraints on the nature of the data, only on the size per OP_RETURN output.

As they are provably unspendable, OP_RETURN outputs are pruned from the UTXO set automatically and do not contribute to the UTXO set size.

Although OP_RETURN outputs are exempted from the Dust Limit and can be 0-value, some users choose to transfer BTC to the output. This BTC is permanently and irreversibly lost, and reduces the circulating supply of Bitocin.

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Burn Address

Bitcoin addresses are generated by base58 or bech32 encoding the hash of a public key or script, along with a version and checksum.

As the encoding is directly performed on this hash value, it is possible to generate a valid address for which the pre-image public key or script is unknown. This is known as a burn address.

This is commonly done to create a visually distinct address, and to demonstrate some level of “nothing up my sleeve” transparency. The hash values are picked to be values that are improbably to have been generated by chance (due to the immense computational power required to find a pre-image that hashes to a specific value).

While some burn addresses were used in Proof-of-Burn schemes, the majority of burn addresses are simply vanity addresses used to simply burn coins or encode a message into the blockchain.

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Raw Transaction

{
  "txid": "8def5a2499d549d8aedca8ba79100fb7ba175847731b9935fd525fc47ff537d5",
  "hash": "8def5a2499d549d8aedca8ba79100fb7ba175847731b9935fd525fc47ff537d5",
  "version": 1,
  "size": 276,
  "vsize": 276,
  "weight": 1104,
  "locktime": 0,
  "vin": [
    {
      "txid": "7b5b6af17821f5add4d2627db1cc1fc68e33b849c90a7f007d8be25ec1a3d60f",
      "vout": 2,
      "scriptSig": {
        "asm": "30450221009b43514e653148194ff1fb7012a74d69f148a5082e11279d3cbc3befa53d4dc5022062d6593f00f607541ac392cc02f3deae9562f5f7b00e1bf25738bcf1c1493a6c[ALL] 03944cec3b773c846209c68ae300173f2e0add8c5f86f8f42cae7e97d23f6ad892",
        "hex": "4830450221009b43514e653148194ff1fb7012a74d69f148a5082e11279d3cbc3befa53d4dc5022062d6593f00f607541ac392cc02f3deae9562f5f7b00e1bf25738bcf1c1493a6c012103944cec3b773c846209c68ae300173f2e0add8c5f86f8f42cae7e97d23f6ad892"
      },
      "prevout": {
        "generated": false,
        "height": 410293,
        "value": "0.03591910",
        "scriptPubKey": {
          "asm": "OP_DUP OP_HASH160 6f523d7e47eaa238f5b51cd64a50d57eef1018a3 OP_EQUALVERIFY OP_CHECKSIG",
          "desc": "addr(1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw)#v8ulda8m",
          "hex": "76a9146f523d7e47eaa238f5b51cd64a50d57eef1018a388ac",
          "address": "1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw",
          "type": "pubkeyhash"
        }
      },
      "sequence": 4294967295
    }
  ],
  "vout": [
    {
      "value": "0.00000000",
      "n": 0,
      "scriptPubKey": {
        "asm": "OP_RETURN 69643fc7b8e4d1a261f8f6663ec853edce98443e5175d8ddb89870984e15be159b1227f39d4d4d",
        "desc": "raw(6a2769643fc7b8e4d1a261f8f6663ec853edce98443e5175d8ddb89870984e15be159b1227f39d4d4d)#j3zt5lvv",
        "hex": "6a2769643fc7b8e4d1a261f8f6663ec853edce98443e5175d8ddb89870984e15be159b1227f39d4d4d",
        "type": "nulldata"
      }
    },
    {
      "value": "0.03465410",
      "n": 1,
      "scriptPubKey": {
        "asm": "OP_DUP OP_HASH160 6f523d7e47eaa238f5b51cd64a50d57eef1018a3 OP_EQUALVERIFY OP_CHECKSIG",
        "desc": "addr(1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw)#v8ulda8m",
        "hex": "76a9146f523d7e47eaa238f5b51cd64a50d57eef1018a388ac",
        "address": "1B9cXShJPQzrzvvCsNz5ESJ82GhvVtymQw",
        "type": "pubkeyhash"
      }
    },
    {
      "value": "0.00100000",
      "n": 2,
      "scriptPubKey": {
        "asm": "OP_DUP OP_HASH160 0000000000000000000000000000000000000000 OP_EQUALVERIFY OP_CHECKSIG",
        "desc": "addr(1111111111111111111114oLvT2)#ula7cdg0",
        "hex": "76a914000000000000000000000000000000000000000088ac",
        "address": "1111111111111111111114oLvT2",
        "type": "pubkeyhash"
      }
    }
  ],
  "fee": "0.00026500",
  "hex": "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"
}