Ronald Christopher Watts (born August 26, 1971), better known by his stage name Phat Kat, is a rapper from Detroit, Michigan, best known as a favorite collaborator of the late J Dilla. Biography His
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 0xb01ab68561f1698f8fbbf7b63dbf9c38c2e64b467275a8d002fa635e41a4e9ea. 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/c803ba2b-92c1-4f60-966b-c2dc1037a156.json and https://artists.proofprofile.net/proofs/artist/c803ba2b-92c1-4f60-966b-c2dc1037a156.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 0xe6c3ed37dd8272724002a87d97c69911bc74c108d1671a9becb9d49c11583f90. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US25T0524203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe577c48448777227a8e1c55d982cf295b9bd0c90da2bb58a66d37fecdbaf7cfc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US25T0524204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646c177ac54ab23bea7f3eff936ad3a1e541c6004d8b4460501d6d6e90092d68. 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/US25T0524205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f92719bb981bdf225fe6dcdfd27404d50c30fb17486d5f5f79b21d9020a2365. 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/US25T0524206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebfa861acf9540bdc12c7d24c161bb0442f8b603a196ac4e3b7ef87bfb7ede1. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/US25T0524207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9c5f8df128de3f526202837daba0d8802b7ec4db4523e901f805826938764b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US25T0524208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fea25f9ce29aaf00838b04b43c534c41e7c9cf5631c98d90ce87f162e9ca95. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US25T0524209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e495d8d565756cfff1091c898d43ccd0ad07a8fafb05e776f323f07aa4664e. 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/US25T0524210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ad29ecb694fe22e4c51e7d7aa13ea84321d62e991de10f4286a58fb17c212. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US25T0524211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f489112e32ceb75eb483df58329a5b0f7b62cfa97d16658a7e845e08571a75. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US25T0524212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2af27c8fdac486a795f16cc1b1d68bcd7d63dc81fcdeb9297cd3d66670519d. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/US25T0524214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1202113234297bd7130b49999fa413a3844ad7f036a43536875c42de99ae05. 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/US25T0524215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f63b17d44f639f7f6325e128fe316884eb396a60979a3bb517c5cd0c9cc9c0. 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/US25T0524216.
All Madden (feat. Guilty Simpson & Elzhi)
It Don't Get No Liver Than This (feat. La Peace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb953ba3eda8ba164bed34bdb785bc5f702771439ade571b389317a2a485074. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USLD91714660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ef02792a7f03883b2158cddd13a9bb32e54054c5e89179051121e79feffd8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD91714661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061dfb4576c1626e609f4928701e41157db2ac07b86ad7c35f33d16084690a7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD91714673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eaa920d387f3a68e9f4810262bfb5ea0b3a57248b758f09dd20dfe786def17. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USLD91714659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eb6362ecc5bf215451d9184e633c74f463b313dfc5c995e889b3fe0edd3f37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USLD91750547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459033373ae2cb9a65e63649f0dd6bedffd890bffc667e75d1d508babb42a6db. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USLD91750549.
Re-Dedication To The Suckers (U.S. Version)
Re-Dedication To The Suckers (Euro Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66844266569b45adf668d9d068c709e21788bec19fe5cf736931980830f95f4a. 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/USHKR0914211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c78505168b78966df557adf1825bd52f4096194b7cef5b08fca701e525c2b7. 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/USA2P2418715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb7c21ba5adf1585a1b03a598b3caf7018a20052e1148cd950583fba93dfa6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USA2P2038307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d5ce85fb3892a572161809c32b20926d4036b3e65924cb27abdeffad0ff161. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA2P2038311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2b9fa1f3d22a9ea7141315366712a525c4eee440caf637665b1db71aeb98b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/US25T0911861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce7f143883edb93cd0cf5f430634188387b8e087a3bd7bcd9fdfcc806fb78c6. 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/US25T0911866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3346e7a177f74739703a667cb2479e8a5793fffaa645d6e3e41c41fae20e0f. 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/USCA20400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed00e7e6554121bb841b99342b2ab645bf58d5832fe97a7d98c07ff365cfe2b2. 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/DEGC61200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e3fa700a33d8df77460c121b424f3c7dfc2e7bb520bdd624824c7dc65b821c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAIO2497196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5f8a10f8c8ced24c3aef561a5bd2139c4c7e6a3232b3db57c4c81a6cc6f403. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMFMG1503725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbafa21566e209dda68b2fa6340f60e31707f5ad4ba3c8ee71e782594a360499. 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/US2S71284021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132537289f3f8d1fba65a54fa7dbd6fdcb0b77ad5b2a509f1e86e880022dab03. 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/USZEG1800135.