Funkdoobiest was an American hip hop group from Los Angeles, California, composed of rappers Jason "Son Doobie" Vasquez, Tyrone "Tomahawk Funk" Pacheco and DJ Ralph "Tha Phunky Mexican" Medrano. They
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 0xc4342afca8d3f1a1c3a79654b56bdfe41052a49a7faa079ef223f1387a4dbf22. 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/b3a34efb-a6e7-4170-af74-0efdfa11d142.json and https://artists.proofprofile.net/proofs/artist/b3a34efb-a6e7-4170-af74-0efdfa11d142.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 0xb1ca529030a260526553066a6cede7b75eb52d3507b9f81a58d566a33d125cf8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USSM12002290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4004956bd12ec7f926c42b781ee1074011642d92479c9b7556158cf35e8a9707. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM11705623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3945281bb01ad8128e5b8275da8b056f65941ba4b6880e8a035d36c1285f44. 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/USSM19303803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a3cc399769d3b5497b083ccc6b80b4d911ae63749396822f8154d01db4df95. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USSM19303806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127c2ab1993360545661705b4eb9f76db940abb27485a5e0a5a4be0c96d446d5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM19303807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c5a7567e1a98a9ce7d7c8a072b9bf0d0445ed53fe6223f956b48ffc226087. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USSM19303808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0922caca716a9bcf57e812eeef898df0773828ff56d2d1fd70b3e411990d8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USSM11914092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8871264d7afc90df2774d8581d1cbad4cb2d11e670de37022e744ff9e897b5. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USSM19504399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84f95f4b3e9a8fa92bae4c2f029a44714753fc8441c706b29e34ced7411a44c. 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/USRC11902139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f95401257d1be6f696ef4708225d2de169953ed4e864ef39e2c61dcf39626ee. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USRC11902140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3fc1f7625104fa67b36fa7ca18744df62a6b3ac69b4b8af5ddaa43957c02b4. 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/USRC11902144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c463061461f5a5ebae97a37954b8b60dc2293c0ff8bf48ca1b5ecab3b663ce. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USRC11902146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd913ce7a51467d997dbfb5c7868b61f11672ebb11eaf195e2f75ee12c3572cf9. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:27Z), 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/USRC11902149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf44c3e96a4d2f6bf0ab8a2f1a0bf850eecc70ea54264aa1382f65f2192f7f9c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USRC19706281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152695d59c37cac87e48ceea882e361a8ac239d5f6eed9d221d478b781d8607. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USRC11902150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7ffd476a523212c0b80d3e61f1c7a243faf9302bb522125b2a3884de7a7af. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USRC11902152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8c6b779283e309af6d04e7b330442b0d05e0f9dfc3aca85364ea24a36d124. 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/USRC11902153.
Doobie Knows (feat. Hurricane G. & UNEEK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd02de220fe138753154c1b9cd8be4f20233ba49b684f3a0090330b3b9fc7e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:17Z), 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/USRC11902154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ae6732ebcf0ed934d8fe69afe19fcd1c03fbaa40252487eda7dd3c90c03ce. 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/USSYQ0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce59fd7a983ade0a84fc688b37fae41d4622e6f1c76435dd9ad5965dfd589fa1. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/USSYQ0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2813ae712d8aa9d53248b79e738c4cbe5d06aa726f65e55100fdb914c71bc. 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/USSYQ0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcde980d99903a07ea0a4ffabb513fc044ac6a5fca5b4d6e7aa499bc1a93cfd. 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/USSYQ0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c8ac4fba136f42716936826d8aca5290a0028dd1c4807bd63a963b229191a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USSYQ0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d988061994aef184808bf9788b09de50a7db9bb68082b722f9db2ec98a5e980. 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/USSYQ0900013.
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 0x757ae61232859df226eb70d6d3910702452701f1967a2af4e1368738d0adf267. 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/USSM19504391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757ae61232859df226eb70d6d3910702452701f1967a2af4e1368738d0adf267. 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/USSM19504391.
Buckwild Presents: Diggin' in the Crates - Rare Studio Masters (1993-1997)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bac07fef924eb1b77ff1b5dda039612358351bc603ceedc1b1140413b7af3. 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/QMFMF1557166.