Manuel Álvarez-Beigbeder Pérez (born 21 February 1932), better known as Manuel Alejandro, is a Spanish composer of Latin love songs, which are better known as ballads. He has written, composed, and ar
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 0x7dc5e615e5de86f4c9ed7212da1932b1eb52666b3e4717bfcfaa92d050454029. 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/034eba27-1d40-4ed6-a62f-591a846b95b2.json and https://artists.proofprofile.net/proofs/artist/034eba27-1d40-4ed6-a62f-591a846b95b2.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 0xe335e202eec4a29a9c9ace73a11e4b24691a3de26ca76cd871e097a7bc1bc062. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US2BR9705128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa771458e501679407a6824182e21667ff91e3cdf06dfd7e34f724fbc0467ecb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US2BR9705129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d0a980d0d388afd8991767835190c1d25523ed2affc3aac395362481dd4dd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US2BR9705131.
La Voz de Manuel Alejandro Interpreta a Manuel Alejandro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3b84414f7c2f322d86f31fedc7a0187d9da3ef266c22707be85651b1b3b242. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/MXF017100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c7925bec03975a4ec74f1616744806bf7447ca6fa46aec5c569f578059988. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES71D2200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f01547ab85efcf35676a4bfd197afae60b9d11df5c175d620260f56ea71c03. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ES71D2200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d2a650fe5856fddc3afb022fcfacc81df0b307c6da3a2c75608bd2a699012c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJZ2372378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d620a48179be4cb3c1cbd3f092a0be67af6b3229de125984589643f99be33. 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/USSM19200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c6f4c1d9e23acf34dcdbba5d5e477e42de8d090e9f9caf8d716c44698b8e7f. 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/USSM10409267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5782abca053822186258506f2b8b59cbb30e45b42c62bdc97a38bdcb8ff91280. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USSM10409268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382a283a02bb93290b24772972b9c1af8c9de9dfc0727e53ada448a921a4903d. 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/USSM10409786.
Tesoros de Colección - Los Maravillosos Duetos Que Siempre Recordaremos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e0aaf6d5e4d71c1ca11b8c99b5259d5e08f25fc0c794a97f867d3c4358ab6a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MXF019400593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c7f48ed8ac5329919621210416cacca94d38e3ee7a723c684935ff98daf60f. 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/ES5099700028.
Plácido Domingo - The Latin Album Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ea5ea749648249f158c5384dc6957a57dcdb01aef0480cc7fa0852c266022b. 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/USSM18900466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572b78801fa0880cac74b11e332025e4daa63db998ba3fa753ebf0ea2b4bf987. 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/USSM11106503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b33f249a5b766ba2a45fa9895860ea2dd59eccfc51f0d4cd81db5e07999b3. 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/USSM10207166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876cfd396bc1645b0498db406d12ae0ddbe1a7dfc4173d482cad5f152097eb6b. 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/USSM10207175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212915c72ae38978d6f8de009afcf15528698cbf7f0f4f8491211df900d667b5. 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/USSM10207164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348c8e8c92dfeb53b3914cf4c620a328ba266e602668e6b2fb905d5c514015fa. 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/USSM10207173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54250fbf1b667596ac286c40fbd6e84204c43c85cdbdddc4f2b504df07ad191. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USSM11106507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5c50e1150640da1871b0e4e51435297ccc8f870063551788b8b288106b356. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USSM11202784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032ef41f18aad1861e9af1e95e0fa97bc3d278e542233ef280b4acfcb87db41. 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/QZNJZ2478367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212915c72ae38978d6f8de009afcf15528698cbf7f0f4f8491211df900d667b5. 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/USSM10207164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b33f249a5b766ba2a45fa9895860ea2dd59eccfc51f0d4cd81db5e07999b3. 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/USSM10207166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348c8e8c92dfeb53b3914cf4c620a328ba266e602668e6b2fb905d5c514015fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSM10207173.