Ratatat ( ) is a Brooklyn-based electronic rock duo consisting of Mike Stroud (guitar, melodica, synthesizers, percussion) and producer Evan Mast (bass, synthesizers, percussion). History Beginning
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 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 0xe0dac2769c8910447d6bc74f554531f1cff7a9a512d498a53a25fc2e9eea78b2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb94e6aa-1122-40f4-b329-c3af430a9f6e.json and https://artists.proofprofile.net/proofs/artist/cb94e6aa-1122-40f4-b329-c3af430a9f6e.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 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 0xb138ae881a11dd540efed3cf8e97e507689f3e69a3d353eb0166647916a39458. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM70981907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abe6bd68c57fb246c87eb121f28d9d6e041b0be44f8732b9ae00067a5eb213. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBKS0300134.
Man On The Moon: The End Of Day (Int'l Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b64e85c1ff6b1c3ba820b4660169034d1edce3fa70502d4afb722e505d94aca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM70981728.
Pursuit Of Happiness - Extended Steve Aoki Remix
Pursuit Of Happiness [Extended Steve Aoki Remix (Explicit)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888383aab55b17a551d661f46b15334cc36f8ae45c6e76d6bd908692fed95a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM70917762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40390c5a39608be5ac98d68d3ad95250405f1f345156260f4fd77701cba4e6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBKS1500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888383aab55b17a551d661f46b15334cc36f8ae45c6e76d6bd908692fed95a4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUM70917762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138ae881a11dd540efed3cf8e97e507689f3e69a3d353eb0166647916a39458. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUM70981907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888383aab55b17a551d661f46b15334cc36f8ae45c6e76d6bd908692fed95a4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUM70917762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888383aab55b17a551d661f46b15334cc36f8ae45c6e76d6bd908692fed95a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM70917762.