Selena Quintanilla-Pérez (; April 16, 1971 – March 31, 1995) was an American singer-songwriter. Known as the "Queen of Tejano Music", she is known for her contributions to popular music and fashion, w
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 0x388ddf7d339872e2d9a6dc24f2509bc5ef6fd05f995e570c15ff9df3c5fc38e1. 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/e3ccbda7-c3c4-4eb4-b40b-5e6617a5bd71.json and https://artists.proofprofile.net/proofs/artist/e3ccbda7-c3c4-4eb4-b40b-5e6617a5bd71.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 0x261a386743eef9139c4d43955335688b452790247ed91c37566f4efcb0a543ba. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USEL19400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b7a6e0d8b8fc3fe4ac4182e35886f5f2f590dc18d7abeacdb9ac14ff9eeb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEL19000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81339e86adc73322796b30ab19cdb1797ca906a98adfbcfcf4d484ccf0d1429d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEL19400016.
A.B. Quintanilla III & Kumbia Kumbia Kings Present The Duets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69caf1ec4d90e913029b749f5af3fd932a15d5b86c7eaa0a539624153cf1bb6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEL10500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69caf1ec4d90e913029b749f5af3fd932a15d5b86c7eaa0a539624153cf1bb6b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEL10500036.
A.B. Quintanilla III Presents Kumbia Kings Greatest Hits "Album Versions"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27cc4f5241db9ac67f2a462f8726b7c64cc49408e65e685f78f936ffb7ac981. 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/USEL19500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f573b4aa96238fbf8aadb494663651993f849f17d9e927d8e2869a52dcad46d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEL11200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c49ef3cbc0d60e5d9e3e160d5a1baa9844e5fc0dbe0ba83b84bf6d3660ac14b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBC19501431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6150af42f576ce1856b02645f3c6ec2782229850f74cb7693bd735afcfee0b54. 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/USEL19400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27cc4f5241db9ac67f2a462f8726b7c64cc49408e65e685f78f936ffb7ac981. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USEL19500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853707eb40d1740c56d91c7415a5a58e090ec9aa8608fe2310be63213285fa8a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USEL19500538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b7a6e0d8b8fc3fe4ac4182e35886f5f2f590dc18d7abeacdb9ac14ff9eeb2. 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/USEL19000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa675bbd193c370505901e4ffbd414e15fbde2f3a98720d80c6b0b1922c1d1910. 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/USEL11200048.