Miguel Ángel Castro (born December 24, 1994) is a Dominican professional baseball pitcher in the for the Leones de Yucatán of the Mexican League. He has previously played in MLB for the Toronto Blue J
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 0x3c4430b8dd85dcd00da99a3fcf2845b9280beb04cc8ebc1b8638603b2fc1775b. 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/a6a623ca-cb56-4266-8470-a69a687793ba.json and https://artists.proofprofile.net/proofs/artist/a6a623ca-cb56-4266-8470-a69a687793ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miguel Castro: World Percussion (Rhythm Journey)
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 0x354871c2872e890195edafa1491287ce59c0b978c151d07fe14b0e63f42b1d50. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBCKG0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd00af3086a0a8bf125fa09931318bdfc4978f3f28ede5b5f882d87025c5c5cf. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBCKG0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92059812724208094da93fd634c4ed3fa3b135e62680cd0c60b06a3b8485a7f. 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/GBCKG0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3324514ec65500fa973816145e70f2345dc1d6adfc692778b5c03e903135fc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBCKG0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1f68f686c4a518d2fef641f20bae6980a2b228542d96a9690c5455dc47a968. 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/GBCKG0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0492a80eaf7598cce02346a4e7fdb77637141cda280a399d0d495fa16ff44a7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBCKG0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca115f6bbeea0d745dec26c5dec831de99672841dd2de292d9eb09bdfecb61d. 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/GBCKG0700020.
Sergio Alvarez: Cuba, Cuba! - The Most Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fa0f1fb7b49ed3e0451a1dcbfca316a54fe183abf0763ad31aa8a5fba01b8f. 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/GBCKG0600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b050d2111deea4321ed2848c35a49b2b2d8a7a0627bf4cfde2f08dac1118f0. 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/GBCKG0600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050636ba689136313a3b9031d4bf03428c083c52b03da7165fb95e2f6b43b265. 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/GBCKG0600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e864552043bf5d67fda768235dfc2e22a9893b2da8a4f38157a831308d3a5d9. 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/GBCKG0600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108a6637bf8c53e20c6c641ff3cf184f567ca5e6f4ccc577ee058c88a81fc0f. 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/GBCKG0500287.