John Course is an Australian DJ, record producer, and music industry executive. He is best known as the co-founder of Vicious Recordings (formerly Vicious Vinyl), a label credited with launching the i
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 0x4f70f32a177d5c68d855429346858aa082baa8fbd1ce2418fe2fd5373fded532. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fed7bcd-7337-46ba-88bb-b5494013a413.json and https://artists.proofprofile.net/proofs/artist/8fed7bcd-7337-46ba-88bb-b5494013a413.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What Am I Gonna Do? (feat. Emily Williams)
What Am I Gonna Do? (feat. Emily Williams) [Rubber People Remix]
Don't Mess With My Man - John Course Remix
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 0xd4c3990493f3e06919f09984a736899b91f91cb684a48e280da857d5cb621958. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUVC02270620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0466c506baf39f1fccbe60f690cb88984d553043852d3929e32699d50b650f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUVC02109910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfd38f127ae65c7c35198697ba6242d35abe5aceb947180c5c795ae4ed7ca0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUVC02109911.
Gimme! Gimme! Gimme! - John Course Club Dub
Gimme! Gimme! Gimme! (John Course Club Dub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5547fea7e73e88a55459b0446beb26540f5f31b20ae8b9a4bd42cb7b067f8650. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUVC02106251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f40bf17c38199699466c1cb34267dd0d0ad396829a6dfe5724738258796274a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUVC02007510.
Jailbait - John Course & mrTimothy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9e3a1e8d52a8236d6447b0a56065bc4f38110b6fa90711a8e7135e3cd8b33. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUVC01108931.
Gimme! Gimme! Gimme! - Slick & Coursey's Disco Diversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d44f6b855d7d3b0a93e9065978150ce552cfbca5b806117ec782d500d7766d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/AUVC02006221.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f20a57d3e9c08874d91324ba41aff7ba9192694d68d3cb4490fc97fa5156a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/AUVC02007512.
Come With Me - Andy Van & John Course Vicious21 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86004eff31a3245820b74dc7c606de3f7df991e51a18c31f72b15cf7542c211. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AUVC01452141.