Carlos Alberto Zamora Castellanos (born 14 January 1996) is a Mexican professional footballer who plays as a centre-back for Liga de Expansión MX club Tepatitlán, on loan from Guadalajara. References
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 0x3c13098f54fe872b1d5d75ceeea17a8197c128cabde5f8f59a3c0b467a3336ff. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ecee91a-c634-4037-8673-93edda1e6c02.json and https://artists.proofprofile.net/proofs/artist/0ecee91a-c634-4037-8673-93edda1e6c02.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 0x84edf67037f7cf22866823c5a765f59a3ccdf12bce882509296054cbc937d3f8. 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/ESAAI0257949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1947be6e9f50094b4290eddd3ca9c2b6d99fa3e6ab73ac4ed6d0296983182. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESAAI0257950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ff704e0e8528bb12ec72a2fade6c8fc6b0cacba9493d77d840cb9705fa192. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESAAI0257954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7282dc6ba3802dfd4f0187c1a764f6562312b7599f03f0a7185e7c2d78adced. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ESAAI0257955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea464e6bdf9fe837ac4bb2c50ac8c437f8ca4dde4255dadeb111591e2f23ef68. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ESAAI0257957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d08f267b58d5a2e6ec4a4bb00298baa2e29ad109074bb1b0a269d022fe5f45b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ESAAI0257958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6faaaf0ffb20006eca948e5721c93111bd6b5f2514b7b4fbf5d38969d8809ba. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ESAAI0257960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae4a23f119b26ac3d00a23f25b3b068a884c1fedd03cfc08ba934b464843404. 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/ESAAI0257964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84da1d4f21bd6dd0b0b40c836c29df2cf1984a77d1da6c4f5b892e0b968b7306. 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/ESAAI0257965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96748b06277c8dea4981d7e0a1a47f73fbec52d2a9116e46aa91534544e1b847. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ESAAI0257967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b63ff46fea26a49dde4c873b596213859459f8e9162ab587f2e32b621bf6d5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ESAAI0257969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9381e10adbd01d6c35ebfc36f441b6c876287767e8d1cfe301aeb9ebe57b37. 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/ESAAI0257970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c3eee673b4d165841cf2a70e7e5223c08d962babc40a873781f2d963aa7007. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ESAAI0257973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2e7451027a42684630e6cde9072c7bf97066599768a17118595e277747a37e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESAAI0257974.