Test vectors

{"p":"brc-20","op":"deploy","tick":"ordi","max":"21000000","lim":"1000"}

The original ordi deploy. Four-byte ticker, positive max, lim at or below max, dec omitted so divisibility is 18 (R7, R9).

{"p":"brc-20","op":"deploy","tick":"tst4","max":"1000","lim":"10","dec":"2"}

dec of 2 means amounts for this ticker may carry at most two decimal places. lim of 10 caps each mint; 100 mints are needed to exhaust the supply (R9).

{"p":"brc-20","op":"mint","tick":"ordi","amt":"1000"}

All required fields present as strings. Effect depends on the deploy's lim and remaining supply (R13, R14).

{"p":"brc-20","op":"transfer","tick":"ordi","amt":"100"}

Well-formed. Validity at confirmation also requires 100 available at the holding address (R16).

{"p":"brc-20","op":"deploy","tick":"gamma","max":"1000","self_mint":"true"}

gamma is 5 UTF-8 bytes, permitted only because self_mint is the string "true". Omitting lim means the per-mint limit equals max (extensions).

{
  "p": "brc-20",
  "op": "mint",
  "tick": "ORDI",
  "amt": "1.500",
  "memo": "ignored"
}

Whitespace is irrelevant. "ORDI" is the same ticker as ordi (R8). "1.500" trims to one significant decimal place, so it fits any dec of 1 or more (R11). Unknown keys are ignored (R6).

{"p":"brc-20","op":"deploy","tick":"ordi","max":21000000,"lim":"1000"}

The single most common mistake. max is an unquoted JSON number; every BRC-20 value must be a JSON string. Write "max":"21000000" (R3).

{"p":"brc20","op":"mint","tick":"ordi","amt":"10"}

p must be exactly "brc-20", with the hyphen. No BRC-20 indexer reads this inscription at all (R4).

{"p":"brc-20","op":"Mint","tick":"ordi","amt":"10"}

op values are case-sensitive and lowercase. Ticker comparison is case-insensitive, but nothing else is (R5, R8).

{"p":"brc-20","op":"mint","tick":"ord","amt":"10"}

Three UTF-8 bytes. A ticker is exactly 4 bytes, or 5 under the self-mint extension (R7).

{"p":"brc-20","op":"deploy","tick":"gamma","max":"1000"}

Same ticker as V5 but no "self_mint":"true", so the 5-byte length is not permitted (R7).

{"p":"brc-20","op":"deploy","tick":"dec9","max":"1000","dec":"20"}

Divisibility is capped at 18 decimal places (R9).

{"p":"brc-20","op":"deploy","tick":"lim9","max":"1000","lim":"5000"}

lim may not exceed max (R9).

{"p":"brc-20","op":"mint","tick":"ordi","amt":"0"}

Amounts must be positive. Zero-value operations are not a way to signal anything (R9).

{"p":"brc-20","op":"mint","tick":"ordi","amt":"1.0000000000000000001"}

Nineteen fractional digits, above the protocol maximum of 18. Against a ticker with a smaller dec, correspondingly fewer digits are allowed (R11).

{"p":"brc-20","op":"deploy","tick":"big4","max":"18446744073709551616"}

One above the uint64 maximum, 18446744073709551615. Indexers apply uint-safe arithmetic (R9).

{"p":"brc-20","op":"transfer","tick":"ordi","amt":"0100"}

The amount grammar forbids leading zeros. Write "100" (R11).

{"p":"brc-20","op":"mint","tick":"ordi"}

A mint requires amt. There is no default (R13).

{"p":"brc-20","op":"mint","tick":"ordi","amt":"10",}

Trailing comma. The content does not parse as JSON, so it is not an operation at all (R1).

[{"p":"brc-20","op":"mint","tick":"ordi","amt":"10"}]

An operation is one JSON object. Batching several operations into one inscription is not part of the protocol (R1).