Robert Fitzgerald Diggs (born July 5, 1969), better known by his stage name RZA ( ) or the RZA, is an American rapper, record producer, composer, actor, and filmmaker. He is the de facto leader of the
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 0xa676f3efd12748a499f3fcd8dd3804c2bda572cb06b145c1af2afcd8b7b6cae0. 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/367e52f4-fef2-46af-aa9f-da6ebf668bb0.json and https://artists.proofprofile.net/proofs/artist/367e52f4-fef2-46af-aa9f-da6ebf668bb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Breathe (feat. RZA) [René LaVice Dark D&B Remix]
Breathe (feat. RZA) (René LaVice Dark D&B 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 0xc7e6486470ea2bc2c6b65723cb8398ee1efb347aed385208765882ea5ca68976. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB5KW2102212.
Breathe (feat. RZA) [Liam H and Rene LaVice Re-Amp]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabad3c5438b4e213966ee789029063013ed864e763a956b3650e70a5a28f938a. 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/USAT22101851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06972dfdbb952320a6d4232ec1de69a719f2c2ba2c2eff5732e5c0a593534cb. 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/USUM71027275.
Cruisin’ Through the Universe (feat. RZA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641fb8edebff0995f80bb30737d1934ca93f550e02b7d0be6e2e54e36cc1ab0c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMRSZ2300077.
Fast & Furious 9: The Fast Saga (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabad3c5438b4e213966ee789029063013ed864e763a956b3650e70a5a28f938a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT22101851.
Gravel Pit (feat. RZA, Method Man, Ghostface Killah, Raekwon & U-God)
Hip Hop 100 Hits - Urban rap & R n B anthems inc. Jay Z, A$ap Rocky, Wu-Tang Clan & Nas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637417278fd00b5269d9c03e832d224a9c3fb39fb6784bbe37268dece3d4e66. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLR50000691.
Tonite Is A Special Nite - Chaos Mass Confusion Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f2975e927dd055bd6b9b4f4bdf4c6645d69d7a5ad5289e55c2b63599da35bf. 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/GBANY9500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4595dbd051f427e3358abbe5988f04c2f8aa329fb128d12208666e22b8948d33. 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/GBANY9500108.
Intellectual Property #So12: 20th Anniversary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea845c91c7a219b1e297c05eddf8372d69f21a58f5d8f2fbea12599883abbe35. 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/QZ46Z1600304.
Give The Drummer Some (Explicit Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f731f79912695e7722c6d6a71c64d9fee36bea660de9877780aaa9b5617bee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71019666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f731f79912695e7722c6d6a71c64d9fee36bea660de9877780aaa9b5617bee. 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/USUM71019666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd69cc19b5b596f2cd892b3a293a42688bbfbe4a240815505e41686241fb69. 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/USUM71303347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139530ded62e665a1bfa5af4e3ae4728d9d4acc437831d5ca5de40dd3c0d1784. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQX91301331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ff8a292fae59fefaef131302a7a5c6be425bba6f727ae9b46240b0f9c2d52e. 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/USQX92304841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139530ded62e665a1bfa5af4e3ae4728d9d4acc437831d5ca5de40dd3c0d1784. 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/USQX91301331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad3e979e67c417c1a8442946d2df6ff4bbff7da8eb0c2f4775183b57f07018. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USKO12100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8729189981a94d90353d8ff848ffc571ca3b4691328893fe0317980b81ef25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USKO12100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a8f5210f42cac79dbf88e37a09c6675af51988662fb013c2d33cc7c765dc77. 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/USDJ29400064.