On-chain Data Template

{
    "type":"btcdomain",
    "name":"4567.btc",
    "first_owner":"bc1p5jfrr6ay9ghtrrkv604qeh0s57y88m3dj3slu7e4u82hw0zfns9q65jngy",
    "createDate":1678271540546,
    "registerDate":1678271540546,
    "expireDate":1709807540546,
    "img_url":"https://btcdomains.io/images/domain/4567.jpeg",
    "sig":"3045022100827f1826ce28d87e136ef5e672e1be4474353993d76965b86c7b0797f25253000220153982c31c2ea3f46690c4015dbcabac449080d65938a14e0ca48f32dc902f87"
}