Ismael Quintana (June 3, 1937 – April 16, 2016) was a Puerto Rican singer and composer of salsa music. Early years Quintana was born in Ponce, Puerto Rico. His family moved to The Bronx sector of New
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 0xefba56b0f1026e6d8890158a02a22f63ed1ff90949878c83d35231441c7fdd92. 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/aee340d7-c4f4-43db-8adc-8aef7748ad3a.json and https://artists.proofprofile.net/proofs/artist/aee340d7-c4f4-43db-8adc-8aef7748ad3a.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 0x64fe11ca2faa1d4ad4a254e279ed79ae024101169ca22c777905afccaab258d5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US78T0502164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc4bde06ae6e8b27c497c4fdbe697d332874be6aca6bac7af4a71e7e25a3e8e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:15Z), 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/USDBB0601504.
Amor, Vida Y Sentimiento (Love, Life & Feeling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57835c4fdb631bf26319a026cd89149dce87f9ac9d3d73ee38bdcd64b0d421f. 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/USDBB0610495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e260ad30ba750299672d6ac88e857fbb8ceee877c7e129e9added6508ba41. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USDBB0610496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9b236a64c26c6fd27ee142c019ce5079473e6a43ef8023310a594f20e2952. 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/USDBB0600975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3859e923bcb50e8f8dfd214212ac8c7bffeb0599c17dc121c61e153f8f01c7. 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/USDBB0605931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539da052a1a0a90ea0e07a6db7136985112997fec4066bc3dce903c6d72e1022. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:58:00Z), 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/USDBB0601559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb583193f40e04c913a256fe42c1975e31a2f7cbd19e73ba12a97855f16807cf. 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/USDBB0610498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeee3e91c437fbc4692c6d4dbe5277c350532c03e8a39b0da557ad4e2a2db91. 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/USDBB0607283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c14d540b8c073651377d34da4b9150a18dfa4e2178a3f2f416ac0674eba9b7f. 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/USDBB0610499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692dc7cbf0e38a38d2d460c9f26b3e60be91003552f28ae692593ed59d865b15. 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/USDBB0610211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeee3e91c437fbc4692c6d4dbe5277c350532c03e8a39b0da557ad4e2a2db91. 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/USDBB0607283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368d2e3de68d68015c9de1800b5884387ca4a797b3fc15f0b92193f2ff79dc45. 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/USDBB0608714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9181ccaf26afafe8156e76cee7c5e747bf2061b44e6e30dfda68f8dc67b930a. 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/USDBB0610213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d03a573be9b2062823fcb8a08da4b81ef84ddfe2b56025a313f2eff634b1c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3Z41600509.