Party in Backyard is a Dutch YouTuber and record producer based in Eindhoven, Netherlands. Career In 2018, Party in Backyard released a joint single with Swedish YouTuber PewDiePie, called "Bitch Las
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d1085b2cd2ce6c37862e932e04ca8055882a855eb6e09b73903d244129280. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42204b0b-d6d8-40d5-b69a-b37187b9ace2.json and https://artists.proofprofile.net/proofs/artist/42204b0b-d6d8-40d5-b69a-b37187b9ace2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ad2791a3ece51782b381a80280e9bd1dbb9cbe44d210d53a5f4845813ac3a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK1916233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e77a6bfcf96eb2ae6f347345b8a8ab64f50fcd57861c142b30cc2cd0e4392. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN41913984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26053ee9cf1f39653b9590fd7354863ed2e4125f55ced0522aa1e15c1a60cf0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N1963510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154790b3db5df3eba2a0fab7185e022b633c2ea1438ed147269d5b9e47e75d6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82099408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbafe0ebe2c7ee45dab089421e543bd0c45ede95e22ff091e6a0a397915cc60. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2064301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a37ec19c670008fa323295c72f44cac234a6643c967e17f91cd68debcb139dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2002595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3828145b0c8ec42d7af8874e3ba04abf20c2de437fb05b0a69d88652aa399f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2286011.
The Ting Goes Skrra (Remix) [Instrumental]