bitcoin-s/docs/oracle/oracle-server.md

---
id: oracle-server
title: Oracle Server
---

The Oracle Server is a DLC Oracle with functionality for creating events and attesting to them.
You can interact with the oracle server with `bitcoin-s-cli` or `curl`

The following a guide is for interacting with the oracle
If you are looking for the documentation on how to build the oracle server,
checkout [this page](build-oracle-server.md).

Note: It is safe to back up the `oracle.sqlite` file to a public place. The seed file contains
the cryptographic seed information. You need both the database and the seed file to restore the oracle.
Make sure you don't back the seed file to a place that is not safe.

## Server Endpoints

- `getpublickey` - Get oracle's public key
- `getstakingaddress` - Get oracle's staking address
- `listannouncements` - Lists all event names
- `createenumannouncement` `label` `maturationtime` `outcomes` - Registers an oracle enum event
  - `label` - Label for this event
  - `maturationtime` - The earliest expected time an outcome will be signed, given in ISO 8601 format
  - `outcomes` - Possible outcomes for this event
- `createnumericannouncement` `name` `maturationtime` `minvalue` `maxvalue` `unit` `precision` - Registers an oracle event that uses digit decomposition when signing the number
  - `name`- Name for this event
  - `maturationtime` - The earliest expected time an outcome will be signed, given in ISO 8601 format
  - `minvalue` - Minimum value of this event
  - `maxvalue` - Maximum value of this event
  - `unit` - The unit denomination of the outcome value
  - `precision` - The precision of the outcome representing the base exponent by which to multiply the number represented by the composition of the digits to obtain the actual outcome value.
- `createdigitdecompannouncement` `name` `maturationtime` `base` `numdigits` `unit` `precision` `[signed]` - Registers an oracle event that uses digit decomposition when signing the number
  - `name`- Name for this event
  - `maturationtime` - The earliest expected time an outcome will be signed, given in epoch second
  - `base` - The base in which the outcome value is decomposed
  - `numdigits` - The max number of digits the outcome can have
  - `unit` - The unit denomination of the outcome value
  - `precision` - The precision of the outcome representing the base exponent by which to multiply the number represented by the composition of the digits to obtain the actual outcome value.
  - `--signed`- Whether the outcomes can be negative
- `deleteannouncement` `name` - <b>WARNING THIS CAN LEAD TO DLCs NOT SETTLING IF USERS HAVE BUILT DLCS OFF OF THIS ANNOUNCEMENT. USE WITH CARE.</b>
  - `name` - Name for this event
- `deleteattestation` `name` - <b>WARNING THIS CAN LEAD TO PRIVATE KEY LEAK IF YOU SIGN ANOTHER ATTESTATION AFTER DELETING A PREVIOUS ONE. USE WITH CARE.</b>
  - `name` - Name for this event
- `getannouncement` `event` - Get an event's details
  - `eventName` - The event's name
- `signenum` `event` `outcome` - Signs an outcome of an enumerated announcement
  - `eventName` - The event's name
  - `outcome`- Outcome to sign for this event
- `signdigits` `event` `outcome` - Signs an event
  - `eventName` - The event's name
  - `outcome` - Number to sign for this event
- `getsignatures` `event` - Get the signatures from a signed event
  - `eventName` - The event's name
- `signmessage` `message` - Signs the SHA256 hash of the given string using the oracle's signing key
  - `message` - Message to hash and sign
- `setoraclename` `oraclename` Sets the oracle name in the database
- `getoraclename` gets the oraclename for the database
  
### Create Event Example

Bitcoin-S CLI:
```bash
bitcoin-s-cli createenumannouncement test "2030-01-03T00:30:00.000Z" "outcome1,outcome2,outcome3"
fdd824b0ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb905f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374

bitcoin-s-cli getannouncement test
{
  "nonces": [
    "80e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f"
  ],
  "eventName": "test",
  "signingVersion": "DLCOracleV0SigningVersion",
  "maturationTime": "2030-01-03T00:30:00.000Z",
  "announcementSignature": "ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb90",
  "eventDescriptorTLV": "fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d6533",
  "eventTLV": "fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374",
  "announcementTLV": "fdd824b0ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb905f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374",
  "attestations": null,
  "signatures": null,
  "outcomes": [
    "outcome1",
    "outcome2",
    "outcome3"
  ],
  "signedOutcome": null
}


bitcoin-s-cli signenum test "outcome1"
fdd8687004746573745f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e086f7574636f6d6531

bitcoin-s-cli getsignatures test
fdd8687004746573745f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e086f7574636f6d6531
```

CURL:
```bash
curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "createenumannouncement", "params": ["testEvent", ""2030-01-03T00:30:00.000Z"", ["outcome1", "outcome2", "outcome3"]]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"fdd824b0ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb905f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374","error":null}

curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getannouncement", "params": ["testEvent"]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":{"nonces":["80e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f"],"eventName":"test","signingVersion":"DLCOracleV0SigningVersion","maturationTime":"2030-01-03T00:30:00.000Z","announcementSignature":"ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb90","eventDescriptorTLV":"fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d6533","eventTLV":"fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374","announcementTLV":"fdd824b0ba0f08e9becbf77019e246ca8a80c027585634dc1aed4b7f67442ada394b40dcb242d8a8c84893a752b93f30ff07525b0604382255ec7392fcc6f230140feb905f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115fdd8224c000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f657131d1fdd8061d0003086f7574636f6d6531086f7574636f6d6532086f7574636f6d65330474657374","attestations":["33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e"],"signatures":["80e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e"],"outcomes":["outcome1","outcome2","outcome3",],"signedOutcome": null},"error":null}

curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "signenum", "params": ["testEvent", "outcome1"]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"fdd8687004746573745f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e086f7574636f6d6531","error":null}

curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getsignatures", "params": ["testEvent"]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":["fdd8687004746573745f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115000180e550759cb6275f6db3fad2b616ed51bdcccc204d0d978cd921cafae9fc1d6f33fd84ba8eea0a75f1568149f42e8466e1bc3422ea449532d4eeffad8586d14e086f7574636f6d6531"],"error":null}
```

### Numeric Example

Bitcoin-S CLI:

```bash
bitcoin-s-cli createnumericannouncement exampleNumeric "2030-01-03T00:30:00.000Z" -1000 1000 "units" 0
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

bitcoins-cli getannouncement exampleNumeric
{
  "nonces": [
    "012d73a453bb630fe355830a81727cf2fb10c41ccfee040c529a4dec21ca5071",
    "49305ff92f679598a11e7a857beef901903fc83624413831a06513da577cdd66",
    "7b1db5da37f1c10bfcaf7a4fb0e9f6dbb8d25dfed7a25241bbec3c0a60a40d29",
    "f5aff60ac9ef8425ae438e84a6f067952d60b947e9e44bfc6e8fd89b78149205"
  ],
  "eventName": "exampleNumeric",
  "signingVersion": "DLCOracleV0SigningVersion",
  "maturationTime": "2030-01-03T00:30:00.000Z",
  "announcementSignature": "fc52dab25169eef25815c795128f38ef3b89bc7f53d1d788b4a1c544e5bebfbf6799975b62a1888e2d77445b6d002672f52f8626b1ea6cc6cd974a8039d28a9f",
  "eventDescriptorTLV": "fdd80a0f000a0105756e697473000000000003",
  "eventTLV": "fdd822a70004012d73a453bb630fe355830a81727cf2fb10c41ccfee040c529a4dec21ca507149305ff92f679598a11e7a857beef901903fc83624413831a06513da577cdd667b1db5da37f1c10bfcaf7a4fb0e9f6dbb8d25dfed7a25241bbec3c0a60a40d29f5aff60ac9ef8425ae438e84a6f067952d60b947e9e44bfc6e8fd89b78149205657131d1fdd80a0f000a0105756e6974730000000000030d6578616d706c654465636f6d70",
  "announcementTLV": "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",
  "attestations": null,
  "signatures": null,
  "outcomes": [
    [
      "0",
      "1",
      "2",
      "3",
      "4",
      "5",
      "6",
      "7",
      "8",
      "9"
    ],
    [
      "0",
      "1",
      "2",
      "3",
      "4",
      "5",
      "6",
      "7",
      "8",
      "9"
    ],
    [
      "0",
      "1",
      "2",
      "3",
      "4",
      "5",
      "6",
      "7",
      "8",
      "9"
    ],
    [
      "+",
      "-"
    ]
  ],
  "signedOutcome": null
}


bitcoin-s-cli signdigits exampleNumeric 123
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
```

CURL:

```bash
curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "createnumericannouncement", "params": ["numericExample", "2030-01-03T00:30:00.000Z", -1000, 1000, "units", 0]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"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","error":null}

curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getannouncement", "params": ["numericExample"]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":{"nonces":["7051e50fd1ab30df4717da8905e400a32c5f4d793a4ac5433ed416165dd286c4","7139d7cabd19d6b0b9e827cdf84a4fc18c88d1882e4e096d8dfeff58759504d2","7446ab1d71a550a0d604c3e86c40a3c9b12de8f08a86639068707822cd475621","d72282a2e9532924dc8cd79685a501202332ad0d118166328cb76138414fccf3"],"eventName":"numericExample","signingVersion":"DLCOracleV0SigningVersion","maturationTime":"2030-01-03T00:30:00.000Z","announcementSignature":"647c85d333aa6fc0d7808201da9d1010b815710dc25c3d73e9cc7a7f372a7342c99144ba74d70be72920f4515daa6565bce12aedfc5a828ee37b5453454c1b57","eventDescriptorTLV":"fdd80a0f000a0105756e697473000000000003","eventTLV":"fdd822ac00047051e50fd1ab30df4717da8905e400a32c5f4d793a4ac5433ed416165dd286c47139d7cabd19d6b0b9e827cdf84a4fc18c88d1882e4e096d8dfeff58759504d27446ab1d71a550a0d604c3e86c40a3c9b12de8f08a86639068707822cd475621d72282a2e9532924dc8cd79685a501202332ad0d118166328cb76138414fccf3657131d1fdd80a0f000a0105756e697473000000000003126578616d706c6544696769744465636f6d70","announcementTLV":"fdd824fd0110647c85d333aa6fc0d7808201da9d1010b815710dc25c3d73e9cc7a7f372a7342c99144ba74d70be72920f4515daa6565bce12aedfc5a828ee37b5453454c1b575f6f49e116de8cb57856bacdd9997d8dfb73877f64a4ec8d45fc0e73a0e52115fdd822ac00047051e50fd1ab30df4717da8905e400a32c5f4d793a4ac5433ed416165dd286c47139d7cabd19d6b0b9e827cdf84a4fc18c88d1882e4e096d8dfeff58759504d27446ab1d71a550a0d604c3e86c40a3c9b12de8f08a86639068707822cd475621d72282a2e9532924dc8cd79685a501202332ad0d118166328cb76138414fccf3657131d1fdd80a0f000a0105756e697473000000000003126578616d706c6544696769744465636f6d70","attestations":null,"signatures":null,"outcomes":[["0","1","2","3","4","5","6","7","8","9"],["0","1","2","3","4","5","6","7","8","9"],["0","1","2","3","4","5","6","7","8","9"],["+","-"]],"signedOutcome": null},"error":null}

curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "signdigits", "params": ["numericExample", 123]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"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","error":null}
```

### Set oracle name example
```
curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "setoraclename", "params" : ["MY_ORACLE_NAME"]}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"issue-34","error":null}
```

You can retrieve the oracle name with

```
curl --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getoraclename", "params" : []}' -H "Content-Type: application/json" http://127.0.0.1:9998/
{"result":"MY_ORACLE_NAME","error":null}
```