Senen Reyes (born November 22, 1965), also known by his stage name Sen Dog, is a Cuban-American rapper who is best known as a member of the hip hop group Cypress Hill and as the lead vocalist for 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 0x0a92bb90cf57007015bd595506a0274dd142e4a90007b639e08aac0541290977. 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/b5cd6ede-e8a8-4a13-b1e2-e3941a4b85f9.json and https://artists.proofprofile.net/proofs/artist/b5cd6ede-e8a8-4a13-b1e2-e3941a4b85f9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ddc3a15401c621eaa5d3ed44d567a86079a8ea81f61b4064d532db6a6bd10. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T17:35:36Z), 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/USS1N0808501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a259ed5de4acc29843aa59785f01bbb57d63e9be19a784a0d1081967499d6. 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/USS1N0808502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5057bda73c759780a3251fff11a459fe4897a8bbc2ad3f66154de889712795e9. 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/USS1N0808503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1ed3ae404f18806c9d3145b9dad7fe86c199d958866092d075f6a4083f67ee. 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/USS1N0808509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac28c4354c4fd83411128d76feb51ccf0995b5c4bb4aa979ff448f545ebc582. 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/USS1N0808510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10bd5f0f67cd8244102cb36f45cd4a90c322f24bf5769595b82f725e828837b. 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/USS1N0808511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944b0175960868475acb17cb34bf15a0ab54673101daf3bdf98a4489fd6810d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USS1N0808514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba919887bdf9aa6ea5794ba7f36b4b20a2aab09bfbe332e7308f0ae9154a573. 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/USS1N0808515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b88cfb37da08a9b37f34ae7b065d6b0a6d3ea4c15355741277e5a0dd547540. 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/USS1N0808516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31612816170317d4c4c8ac13acdedf9c0118ea37720e1637a960c6c5da41f3a0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USS1N0808504.
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 0x9c7de664080c1454dc61f9906a4de84ad332d3e02ce5249c8d65c858dd049c02. 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/USS1N0808505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50770e81edfa251298beb8a3384c3c7456c49437c0aa0cff5bee4f69e6e943ce. 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/USS1N0808506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e51339fd0ef724af32c8ce883c92106bd911ef9acbda0d04508eca681881e64. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USS1N0808508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6507d8934c66687ef07aee55b1b25ed6ab1daf09db11aafda455014fa8922cbc. 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/USS1N0808512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0343994cf9f924b1653bba2922eec480ec01e6af18eaa1561a12bd405d82baad. 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/USS1N0808513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49468a907a3f5a677b1ae376cf716a900690106597fd0ef8c954ba94bd8b7d3d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DELV41800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fbcb9e913c1af82797da6f5422d12243c098440c27b05a4c7aa177d106a8bd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US66W1101113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fbcb9e913c1af82797da6f5422d12243c098440c27b05a4c7aa177d106a8bd. 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/US66W1101113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3119b081dcf2665ee94b01ae43eaa2ace3d7eeb9f064c63b87330cd66547a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZH5R2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d56cabecac159297e3231deb9e56a52d3d545c9274c282cedb17fe4887eeae. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USA2P1549759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8e3123e41e92229ad4caaec5232e7dabe413958831334b7be10a1241064e3. 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/USPRZ0810282.
Bully (Music from the Larry Clark Film) [Digitally Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c62c818cc0c51ffd651e57effb109fc8b65e8be67b42d422d603f237f5d430. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USGZ21454047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f16519ecd448095b07bd9dada05673ffad5c19804fcb81d6fe187695ff2a455. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USS1N0809711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe9c2118ede8f8f6a5f7161abe924a02b636391b6ebb1a47ee3643acc825420. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA560849411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe384c53f3fa190cf2df8a0a8604311dda266267204fc4d1ba295e1fa4284b6a2. 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/QM6XS1808014.