Samuel Serrano (born November 17, 1952) is a Puerto Rican former professional boxer who competed from 1969 to 1984 and made a two-fight comeback from 1996 to 1997. He was a two-time super featherweigh
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 0x574e99c891c7a77f30e2df59ad081e5595c3c78d30de4828d65762a11583062f. 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/979a0e8a-fdc2-42f7-bf8d-542cc9d7e29c.json and https://artists.proofprofile.net/proofs/artist/979a0e8a-fdc2-42f7-bf8d-542cc9d7e29c.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 0x8cb8acd9a08c1f6b1f3b3f50f63b0f52ce3f27b26fa8658621384c3d0a2d5d0a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ESA011800580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e8e340834f4009b4cbe7a9cd6f76b6036c1504f9b417595d02a018d1fb42a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA011800582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2248219338f8c69d11f42578e73d476ba393419dfd3c637e0e6b329d7b7e6ff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA011800584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d5004862e4a3cfc4e99f121a919872e6ee6a3f8e8266cec37e6b4d8fdc7cf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA012240829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc2a87c3c7ac395a8cefe378fa592b7f62c11e996108a97055c0822dfd5382. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA092225655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26085215d2988fe62496aa149947e6e4177eba10e78f00a19101726f27f2b39. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ESA092225656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59377dbd8ee578c55c03820c130271a537e55a03f908bbef7eb0915f624a4ff2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA092314802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65809f708014338ac74f4fab25ee11a560dca1b2e73c1571dc8b396a7572b115. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ESA092335637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d366b115a5ddc109972b2e9623707e44892a2a3b8d131e307096fa47f2f4267. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA092407474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b6ca675165b4f12bdb97294dd09ea9153d96d262b2ebc72bb3f85c5a7d2d57. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/ESA092503675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c36ad68899eccfdd7ab5b1fe7e8d6966bdb9616e706657156246d6c8c8aeb. 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/ESA011963462.
Si tú te vas (feat. Samuel Serrano, León Bravo Padre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec6d52cd35d3294b946aa86dfc9307f4380fc57ac0991a48e16bb167c01c4e9. 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/ES5152201701.