Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/21/2026 at 10:49 PM, included in the fingerprint of 10/21/2026.

Pick: #1018526
Tipster: APUESTAS DE TENIS (@PICKSTENIS)
Event: Santiago Rodriguez Taverna - Gonzalo Bueno
Selection: Gana Gonzalo Bueno · @1.64 · stake 5
Fingerprint of 10/21/2026: 38100063 3518c41b 66246297 9d3d6228 725b4d50 d2f82755 441cd2c1 50547cdf
Pick leaf: 2380d826 1a597638 3c17238c 6b5c4537 e56ccd68 d980d4a7 0bd49473 4442eb8fPosition 523 of 566
Bitcoin seal: Sent to OpenTimestamps on 10/22/2026, 12:19 AM; Bitcoin confirmation takes a few hours. Download the .ots

Inclusion proof (7 steps)

1. right 3e0ba74b8de2386e3d89b30a0fc95c552f71970e3fa6adf776b34681d05d99f7
2. left 5488db3b9c197759bc5c85871702b10aabe0f0bb8feb6c23f57e034095b74512
3. right 7013d6c0c0bb118d3506bdb0cfaa9bcccfe3a76b7476565e186b032b99f10f49
4. left 7f8d8ccc0d01ca67b04f190bd12e865ade71470ef0f9c08ecd99cb54830298f2
5. right f6d6e300aa206affaa436cccf54d41bd63c1614b89aab353eb1d64f4939b7a31
6. right 876e1d343037f1a63b935b3c669cad5d4fe3bd137941cc54a9f4943f2f3129a3
7. left f1d2994afca90faf77275facd5e301312261c47dac9bec99bda75013f0aca80d

Recorded content:

["tipsterland-huella-pick",1,1018526,24688,"2026-10-21T20:49:14Z","Santiago Rodriguez Taverna - Gonzalo Bueno","2026-10-21T20:49:14Z","Gana Gonzalo Bueno","1.64","5"]

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.