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 0x8b692890be03b30cb70b7a9e03959bc712adf83be89ff24b9049faa3c0ede108. 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/1fd6c8d8-f026-48fa-b4d6-744a3ae0c4fb.json and https://artists.proofprofile.net/proofs/artist/1fd6c8d8-f026-48fa-b4d6-744a3ae0c4fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Cantores de Quilla Huasi Cronología - Clásicos del Folklore al Estilo de Los Cantores de Quilla Huasi (1968)
Los Cantores de Quilla Huasi Cronología - Cada Vez Mejor (1968)
América Canta Con Los Cantores de Quilla Huasi
Los Cantores de Quilla Huasi Cronología - Los 15 Años de Los Cantores de Quilla Huasi (1969)
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 0xe9862b6553a3354db97471441f6d913260aca4ae06a762d0452586eeaab3e3f9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARF106900143.
Los Cantores de Quilla Huasi Cronología - Los Cantores de Quilla Huasi (1969)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5cf75683cf244742b9ab8228229e57dec9ce62e5e16b30cc6a895df4a0a469. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ARF100300305.
Los Cantores de Quilla Huasi Cronología - Cantale Chango a Tu Tierra (1969)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d80daa34dc00db86c90ed4c6252b83221db16df15b14a0a638bc1c779a6ea5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARF106900172.
Los Cantores de Quilla Huasi Cronología - Los Cantores de Quilla Huasi (1970)
Los Cantores de Quilla Huasi Cronología - Triunfadores en Europa (1970)
Los Cantores de Quilla Huasi Cronología - Mejor Que Nunca (1971)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe16463bed2d0bed22882112875d67b37d0bea42a6cff265987eef10b750f6ff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA052587268.
Los Cantores de Quilla Huasi Cronología - De Japón a Buenos Aires (1973)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98628e7163ceac4f44a8f32a6c25c2b6ef37ae5c92dd8961b296070e35f81d. 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/ARF109902133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c2c13a9b4951bfc62d59d5ede7f04bca46749837845e374c6f5aea45ad89a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ARF109901429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef3a7149a57969c24985059592ad39770aced7353c14f9e60bc22ca8926c66. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARF100300299.
Los Cantores de Quilla Huasi Cronología - Sentencias del Tata Viejo (1973)
Los Cantores de Quilla Huasi Cronología - Para Todos (1973)
Los Cantores de Quilla Huasi Cronología - De Argentina a Hollywood (1976)
Los Cantores de Quilla Huasi Cronología - Vigencia (1976)
Los Cantores de Quilla Huasi Cronología - Cantos de Fe del Pueblo Argentino (1977)
Los Cantores de Quilla Huasi Cronología - La Casa de la Luna (1978)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65bea21947517defc4125c5972d7c89623a22d01b7e5f640fa47979b922fa94. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ARF100200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98628e7163ceac4f44a8f32a6c25c2b6ef37ae5c92dd8961b296070e35f81d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARF109902133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d48ffd6dbfdc3109c57ca75d1db675537824e749a12d337302cc2e55da84827. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ARF109901215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206aa5479017845c7bb281100d0dc59b17385a30b9dfe4c4f392e5e606bc5d1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARF095900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe202661ee0515637f45b43879d73fbbc0e53006b93c74cb4521b641ee8b48855. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ARF096300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9df968f1d9c00ebc6591bbd8becbafd18c4dc327922c8d43e7e87d1afa91c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARF096600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc04970a6f018b50cd2389cf779414a14046b9a446228fb3e7cf1424f4b8cb. 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/ARF109902134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b6389521c35751bf1f47353b1e8fcf5a6161476907df8d56172a4947c02a95. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ART721410244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9510d7f2f055364574684dc3b0b8c2b28b4d4682ff181187f0a7e703aba0507. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6N21567987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc094e72084ae6c8271bc81ae89cf1356af7c577d6f5d848bf2a451ebb747637b. 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/ARF109901318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98628e7163ceac4f44a8f32a6c25c2b6ef37ae5c92dd8961b296070e35f81d. 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/ARF109902133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc04970a6f018b50cd2389cf779414a14046b9a446228fb3e7cf1424f4b8cb. 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/ARF109902134.