David Alexander (born October 17, 1974), better known by his stage name The Dirtball, is an American rapper. He is a former member of the hip hop group Kottonmouth Kings whom he joined in early 2010 a
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 0x22bf2f33a501b0a560b5c1a6d60833ad8390773d0d67077fb1e590477df96483. 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/169da79f-b07c-489e-a5be-82af370c14af.json and https://artists.proofprofile.net/proofs/artist/169da79f-b07c-489e-a5be-82af370c14af.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 0x314eafb5635581470dbc3412a52a6e9eeac3d58c64e69de48f072d08e02620c5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM6XS1808328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519081eced1a8ca62ea8db69281d312f90ab903fcb89b38c4546af6ce9f1f353. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM6XS1808329.
Kottonmouth Kings present The Dirtball: Nervous System
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc829f275b97bd089a50d1184598a623f01a146bf807b8f872863df8d505d67. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6XS1808282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84c8beece1c9852c07ab1a3c5b9f1648c59271fb6c42d118a839957a2439b7a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6XS1808284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c8a442477faa6d4f131bf635be3093dc07d52be706f3ed182659ddbd3399db. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QM6XS1808287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2d501eef66ff70c794bafc861cce286872a6ab3e4b02c94b9183e53d80cff7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6XS1808288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53212e26c41163b7cea75836df58e8bcd550f5092a328c134b53ad830eeffdf1. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QM6XS1808290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf01d0ee7b6bfaade00ae983ba4ca1930ba2508f8d9df57c08e530078b921c. 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/QZDA71967790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0c9d36d16c6cf46584115ce2cd0aefa550fd3f525206743043dc557cbed4c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZDA71967791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531c53f2a779b2770a01699a87be7c01e04b4122ed768889e558c0bf4d98acb. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZDA71967793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cda5c6239ff238619112309b39d77e09a394d4451444eb68047f5277b494a80. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZDA71967794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7f30d183822ffe6f7aa1bd678ad2bae992742a233b7ef36baf959f3eb9d058. 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/USS1N0809712.
Skateboard Shoes (feat. Mixed Magic, The Dirtball & XV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74325780f53bd8c98914dfb5654fe7b5dd1034e86f365f80eff444966e32a2b9. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USHM91343293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39c5269c41d04c9d74ae0e0f7effc7105e749d6b7af4a1f9aebdd11239da039. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM6XS1807991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7567ab1261b4c6ffe430ab3f78298cf26e4aa07026b2b7b071bdaf270a44b34. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6XS1807992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75062e12b4ef0b7bac3be23df955c7d0630ea03d836f3523d7a5d1e95c9ac1e4. 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/QM6XS1807995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4fa61ebf14a359142b62a5366577f8fd88e55fc5f6513da7d72c3556a9bd3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6XS1808004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97387f40e6800d40adf837a344fa16730a75f7b5e36be47e461de53c6cfc6d92. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6XS1808008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbe4d96989dee15cdb7aa9f43cdf431a18ab14bf852cdfce729d6d28e89386e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM6XS1808009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b13f5b3d646961ed662970ed9440bdd072c01991c49fada6adeb6e1f60af07. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QM6XS1808017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d415e83fc29fcc5e23ce2442e24a06fcc996f5b1844efcda9b007f4f4408fb. 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/QM6XS1807961.
SRH Presents: Supporting Radical Habits, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b01cc7a2c77f830b161c4ce45ae32eba5f5f3376f32ff4e97e5f2c54cc8cb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USS1N0710035.