Rafael Santiago Casal (born August 8, 1985) is an American writer, rapper, producer, director, actor, musician, and showrunner originally from the San Francisco Bay Area. Early life Casal grew up 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04fa8bbd0381b13bd153b336fa68936075691304512d5543de9ddcf1b5492e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76511ccf-def4-42cc-9bce-b50739d4929e.json and https://artists.proofprofile.net/proofs/artist/76511ccf-def4-42cc-9bce-b50739d4929e.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 0xb18a43674b0ef6d095719dc08b57a82f33eebb92271af8d9168929aea27f2091. 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/USUYG1228802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28c72d293e3d1e04b178be3bc9f5d425be17a0f0fbaf0625ec66ce164759344. 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/USUYG1228809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d73255f223f422036042a86595e4158b7758346cd3289089d78c6c73411872. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUYG1228804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e03cdd92bc86acaffdc8942591789a170dc900d0bafbcbd7a18f6dc9616ff. 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/USUYG1228805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2121b457c0fc85e1ad3b06da00e2cf92f5f8e4e252263010a9e7619a06b16777. 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/USUYG1228806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cca9bc3e517f275a1a8513e3d108724da43acb2eadcbdc8bf9bcc287dbfc66. 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/USUYG1228808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4477c8f06bfd72899332f7b90049a379ef83c4515eadd7d9da164f689be17. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:07:44Z), 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/USUYG1228807.
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 0xc91870eedcd31c7ad13167f844717334a5d556d7f3d8db782d7dbe2a57211dc4. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USUYG1228801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0507d71837b5bfd1c39b558fd0c40e21d958c2755193e8d73dd2005dc0aa3. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:59:17Z), 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/SE5VF1901126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277dccb7ae861c4abb050c43d9112e5c726535e01ba9ae747d6f0e5eeaf7ec3. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWFV2458418.
Central Park Season One, The Soundtrack – Song-tral Park (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ef982d05b03d3ef21bcdcf774ba512771b86451b331d2296035afd48f8b26e. 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/USHR12040117.
Blindspotting (Music from the STARZ Original Series, Season 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fef7583cd5c6870923896a06f6d70313665546de3a3620efa4964951c4f8f9. 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/USA2P2130189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a246c5f6864d548f6ca279dbd0b3dca1af24af37ecfeec01dd18f2b14720342. 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/USHM81941695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0594432858a63330ab81ffba528fdee770b250153c46bc93b0a98e39bba9e8. 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/USHM81941696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ff21ef7393a4a329926f5bebbf0f22146663309397886ce50cfe822441c54a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81941697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecb95fe4c3707941cddd4fd8d045553c2826a013b01badce8b29bb46fe69cf8. 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/USHM81941698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d133ec7a944d55c2fceb0f36320c138366734cec27efeea545cc31745457c7d. 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/USHM81941699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634446fd22ccf315a31d43669acf85b863d8cbfa01fd285994ebe88d766a6622. 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/USHM81941701.
Blindspotting (Music from the STARZ Original Series, Season 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c82efc086848d49cfbe1314bcd291c81f9784f6fe61d8de8cb80d23ce1610df. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA2P2322517.