Curtis James Jackson III (born July 6, 1975), known professionally as 50 Cent, is an American rapper, actor, television producer, record executive, and businessman. Born in Queens, a borough of New Yo
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 0xf1375021bf81486a0c95a519182222340bed884d29c532d44336f05f89de0a70. 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/7123c935-035d-4ed6-be52-317d8b7f355f.json and https://artists.proofprofile.net/proofs/artist/7123c935-035d-4ed6-be52-317d8b7f355f.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 0x783ace09d85563f05f2177ccffa98be75a4af11a14f88ce646b05dfb4b5ade19. 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/USIR10300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd228a97b960a0413286c1a76c4c713a3cbc5dea63c47efca535c34eba8cd39. 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/USIR10300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c84e4a3261b7f9594870d65ac252f887ca4d23d8c59bb0c402b93d5a1970c1. 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/USIR10300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c74c81966cac860fe83c3b08a8f87198eeb382f117fc4104cfccccecda817. 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/USIR10500072.
Remember The Name (feat. Eminem & 50 Cent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951693cda45c1625e3b24bf39f5eb2a37b99878f9c2353ef50ebcc3286618e34. 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/USIR10401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6de65807d3d5562771a9c9320465d77039bbb99023669e4bc092a29f0af1c50. 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/USUM72013367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23a033bf0419c36c6fee650804bc86cd017a72e8f13963ab0815a2797f4b390. 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/USUM72318956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7a3d9b12996be678751e51ad53cfc51075e2ebf29ffd846fcf0ab758f037c0. 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/USUM70963619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca981f9d940c9720bbbca0e8202ba2bb3d565249c2847461c2c7fa5631d5e4. 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/USUM71029119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7609ee4d0fac55da8eb96bcecc4cee4d0ef6e2beb3e0811c3477cc787b2bdf3a. 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/USIR10500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808c361b3aa6744f15e4da86685c4b906660c13080192ce261c1605263262fc9. 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/USUM71800609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a064e597d2e3a1e7348fccea8cb08e6f7f19b9b91f03c3961778cca3284d6. 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/USJI10700771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b7eb47f91dbc2e93cff1338d38cfb2c0648ba7727d2939b88d55a9c3b58d72. 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/USUM71214714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd228a97b960a0413286c1a76c4c713a3cbc5dea63c47efca535c34eba8cd39. 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/USIR10300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c84e4a3261b7f9594870d65ac252f887ca4d23d8c59bb0c402b93d5a1970c1. 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/USIR10300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ceca299378c58aa04e983de700cd321f9a8528d5945041668977c367fe48e3. 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/US38L0903171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd228a97b960a0413286c1a76c4c713a3cbc5dea63c47efca535c34eba8cd39. 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/USIR10300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5fa950643c79accfec657ca2412cfce085fe8754ff65bada534b7bdadef2fa. 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/USIR10400834.