Los Tres (, ) is a Chilean rock band, formed in 1987 in Concepción by Álvaro Henríquez, Roberto "Titae" Lindl, Francisco Molina and Ángel Parra Jr. They are one of the most influential rock en español
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 0x5252f7ab86a0c8cc1ad2504f7369539007723b463c9ec3d7bb1ad2831a7a9bcd. 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/e14f467c-a694-4e7f-b011-8868e39b15d3.json and https://artists.proofprofile.net/proofs/artist/e14f467c-a694-4e7f-b011-8868e39b15d3.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 0x610f19be841613adb3937d1d0e9df29ae9d387eeee724d650d5cb189c6031a66. 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/CLA229500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394de70d67ca97e0dfd1d32c5ad08d9b2c440c70d91e850dd3c778c5c634a259. 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/CLA229500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d703ddba29290f5722829eb40b76b5f499e381756f69f90ba700a9b821756ec. 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/CLA220600022.
Quien es la Que Viene Alli - Unplugged Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c712ef68ab532c2f4457f98269ac4708a2030ffeaf4dd3cd6c9d15fe6b7535a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLPP20600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87560748fa6140408ddcee106c92969bd4f7f5a3e4f38a276a3864ff46b34ac0. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CLPP20700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c712ef68ab532c2f4457f98269ac4708a2030ffeaf4dd3cd6c9d15fe6b7535a. 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/CLPP20600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10086667e60135991e28ac8cb56369554600013a47b7a82278b0435097a4d03. 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/CLA229500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f350ec248644aec77b87e10a6294aafd55528481b4392725935405da46635. 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/CLKT21700797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c712ef68ab532c2f4457f98269ac4708a2030ffeaf4dd3cd6c9d15fe6b7535a. 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/CLPP20600207.
Carnaval Toda La Vida! - Tributo a Los Fabulosos Cadillacs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52734f5d1c06dd039a5b8ce7030d1a325a557b769dd266cd5972bc4a7caadd9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF471000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386a462f6f25bbe08503252c5ed5062c34e7a7a799a10dca3e879efeff7e78d4. 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/ES71G2203806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f350ec248644aec77b87e10a6294aafd55528481b4392725935405da46635. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CLKT21700797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8622fb1ac735a2609d2d5b30a2f57dd88934202b79da3f2a68d4b1795a2c94c3. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/CLPP20600203.
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 0x5109852e96ec9549155b8857bc6fe29963697480ef737ed3ad00768183b97479. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CLA220400127.
Inti-Illimani, Tributo A Su Música - A La Salud de la Música Chilena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7718b655b732761bd8e573b48563775133383979e1f9706557aa8df83071adb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CLAB20902859.