Stamps family
The Stamps family encodes data directly into the UTXO set rather than into witness data. That is the whole point of it: UTXO data cannot be pruned by a node, so the content cannot quietly stop being available.
It is also why Stamps cost more per byte than an equivalent Ordinals inscription. You are paying for permanence in the most expensive place on Bitcoin.
| Protocol | Chain | Creation operations | Released | Workspace |
|---|---|---|---|---|
| Bitcoin Stampsstamp, btc-stamps | Bitcoin | inscribetransfer | Released, ungated | /stamps |
| SRC-101src-101 | Bitcoin | minttransfer | Released, ungated | /src101 |
| SRC-20src-20 | Bitcoin | deployminttransfer | Released, ungated | /src20 |
Bitcoin Stamps
Section titled “Bitcoin Stamps”Images encoded straight into the UTXO set.
| Property | Detail |
|---|---|
| Payload limit | 65,529 bytes |
| Accepted types | One image: PNG, JPG, WEBP or GIF |
| Operations | inscribe, transfer |
| Address roles | Payment address only |
Stamps can be created either from the Stamps sub-tab inside the Inscribe workspace or
from the dedicated /stamps workspace, which also inspects existing stamps and shows a
portfolio view.
Workspace: /stamps. Released and ungated.
SRC-20
Section titled “SRC-20”Tokens in the Stamps family. Deploy, mint and transfer.
The distinctive mechanic: data lives in 330-satoshi P2WSH outputs, and your wallet signs pre-built transactions rather than making a simple send. Expect the wallet screen to show a constructed transaction with several small outputs, not a single payment.
330 satoshis is the dust threshold for P2WSH, so these outputs are as small as the network will relay.
Workspace: /src20. Released and ungated.
SRC-101
Section titled “SRC-101”Permanent Bitcoin domain names ending in .sats or .btc.
| Property | Detail |
|---|---|
| Operations | mint, transfer |
| Funding | One signature |
| Extras | Availability can be checked one name at a time or in a batch before you commit |
A registration is permanent, so check the spelling of the name with more care than you think it needs.
Workspace: /src101. Released and ungated.
Choosing between Stamps and Ordinals for an image
Section titled “Choosing between Stamps and Ordinals for an image”| Property | Stamps | Ordinals |
|---|---|---|
| Where the data lives | The UTXO set | Witness data |
| Can a node prune it? | No | Yes, in principle |
| Cost per byte | Higher | Lower |
| Size ceiling | 65,529 bytes | No protocol cap, 4 MB upload limit in Inscribe |
Use Stamps when unprunable permanence is the point. Use Ordinals otherwise.