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 0x3d189f9fe4dd5fb964de6b02ca772a4feeebcaef6af8e19141e338b136788637. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54d02365-e8ec-40eb-b7d8-8e64e799ca10.json and https://artists.proofprofile.net/proofs/artist/54d02365-e8ec-40eb-b7d8-8e64e799ca10.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 0x414038f48a333802d2a4dd2edf8a1e43327452fa5c596a3631fc876a965ea17e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:17Z), 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/QZ93L1917235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82629290b79a816bd541b34fbaf80dbe54b2b079a34ba225487f8a2c9e76161f. 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/QZ93L1917238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eaf5bd5a374e8b9b61a03f0dea45ee3ecf9d5b9abd52f4db91e9d0234afc56. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:43Z), 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/US3DF1955766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf64049df725399acaffaf37cd6d8b61c01393f1758b8fc43f54ad2265ec800c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USANG2002395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7b571006e170589a85f49953b1ef74a3fa1435178f491b1554eb28463284c. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZDQH1901452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048a938c281b2ba0829adf49ecf7327bc6d081a339a84ad577abb9bbcfa0428f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH1906322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb87e1129c65fa8762ee33ade43eeca8711c313b0c904bb7d338454e218c81ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMSAV1103397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce181c0d81be027e148b7cc3076f6d5ac1b1c9cb87cb5590a18760fba171b9a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMSAV1103441.
Popurrí del Apache: Las Palabras / Viento / Solo Cuando Yo No Estoy / Otro Día Más Sin Verte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2132ea0bf4220c6659fffc85ba91bfbf5c121ffa5f25a15d7b98da35314379f4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMSAV1103762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15cc358c5ddde0e03b4b034fe74187020cb88dea54144290485f8b44a7d62ab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:36:45Z), 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/QMSAV1103763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd8cd304a0bee345c2143ab1c1fa296ddd6b6620912f5eabacb3b91aff2dfcf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMSAV1103765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a76426127b8010f4ceb75db61714b62ffca47fae71c1b151ae6ed770ca8f6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:18Z), 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/QMSAV1104061.
El Brinquito De La Perra Roñosa - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bfd3f1dbf07496d7af6d51bcd412beee159a7cd143577dcc4e9871b89bce4c. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QMSAV1104337.
Popurrí: La Carcacha, Baila Esta Cumbia, Bidi Bidi Bom Bom - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92cf9cefca6b918c2341d1fa6bb99cb76aa5b2fa955b82d3acb23c632d5b82. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMSAV1104674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc909360866b69d0a9772c4987a006acdd46f4e6c1d3af3f5b0019cdf2a07742c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMSAV1104679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfc99d82fbf987a25c8c5f06c50c9f855e1a90125bedd62f18be70ebc3f47ba. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QMSAV1104726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3e6c388d62dfe5b90e8e0e3c9e28e3da6b430a9e222ee2faf79795b146739. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMSAV1104883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de750fc5c9f958fbf8335d688fbf7897c914ecf6493d731a37aed565fa3d308. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMSAV1105515.