Richard James "JR" Castro is an American R&B singer-songwriter from Las Vegas, Nevada. Castro was originally a member of the Interscope/Zone 4 R&B act I-15, best known for their 2007 single, "Lost in
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 0x9295cdff6c3e07b7afdf432484b79a08e738f4c58107618a2c59cb6974a4d050. 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/fd825b02-5d4b-40d4-8acc-b844a8987c1d.json and https://artists.proofprofile.net/proofs/artist/fd825b02-5d4b-40d4-8acc-b844a8987c1d.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 0xbda16c46ce23913569395248da5e98670e56ea922a440a4dffafa7ec7c2cee0d. 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/USUYG1160872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1076c2896470a7c1d06e633c378eb40b3393aced3ee1e290e75da6ee52f3c944. 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/USUYG1160873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c018903467a318225bcb08f84cd8b757e7c7a0fff1ef0805534f5bdee3992a. 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/USUYG1160874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d400a717abb06524b7360c7eae842587613085fc6ac2da4312d13ec52d7aed. 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/USUYG1149396.
Songs You Were Made To (Hosted by DJ Carisma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ef8693e86b9d71090460d726269dc8c7981dbcc7b9d1248357c8476ae85e5. 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/USLD90816720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3f61b49d6294fa96076dfefa9243e4617dc5bf7a4bffbc4194ba09330a7888. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USLD90816722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f462539e829727092ee33a4d81ecfe20d4bc83387bdd086864059bb5697459. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:20:22Z), 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/USLD90816723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc257cacdccdb23f84b39a8bd9dd2415618cb21efa72abd40d50090f7f063054a. 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/QM4DU1500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c4227bf9932d5e2456766dde418303f37d55f7c856ef78aa3caeaa3366776. 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/QM4DU1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688d236996a69eb0369715f1ceae9aa57afeda977685a2a68f15432480009e15. 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/QM4TW1788133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f62cac2f61d34d81df11d2ad727e5143e4a19a0770380b0fc3a10ee05f567. 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/GX53U2448802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a63a5a0d16cc5a30383a7184e9dd170a0a7807212b41ed7c82c08ee2cbe00. 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/GX3Q92356421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c046cef99bcacd82afd6cf48bf30d56daf3295f1b16c469d354cfe557e79ebe. 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/GX53U2448800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08885ff7b01e4540d98880ff7a6f653ac4beb2282460ceb14d42850404de1cf5. 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/QZ3KG1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4016ceba5f1bdd51d29c1b4e3975ea66b2d8c56fda2e99960570a7b008d93b. 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/UST8K1721334.
Cuál Es Tu Snapchat (feat. Marvelus Fame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016a7ee6e429d616bbb3c9b3bb740568a707fff5714918b4408cd6c2dd0cbec9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCADA1728352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4b6e5d953805fd1e2d346927c6ea999a9e3e57ab2378a4b759e90f2fcb99a. 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/QZK6N2131446.