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 0x2e433060c2ee947d34eed6ecc87dca89cbb45f18bd737f48baa436fb8f33b1b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fde95c30-1c49-409e-ae7f-f3be557f5138.json and https://artists.proofprofile.net/proofs/artist/fde95c30-1c49-409e-ae7f-f3be557f5138.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 0x10cc9225cca79a540ef5f3f1952e909f8c524b88fb1771490fa7bc7b4f683b29. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADW1845115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f7493afa1d669c98ab7d955a1a6bcac3a14bd504295b385be1a1383ec277c7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TCADW1845117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f95146384e561031f3d2ac6a5249ab4be2b7df2233103c2a162b37995e133f5. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCADW1845121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a6439a0af73bc56f3295403cf03bf7b0c5dbc95f927d0d8bf09766c07793b. 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/TCADW1845197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7f1f21e9b64030233425bb7449364d67264cbf44bef9dd3f72924d8b4bc1b9. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCADW1845199.
Por Si Sirve de Algo - Bonus Track Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1281d52531aa489b28b751b226a16961720f54ece2ca0877d66c844eec87265. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCADW1845207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902fa56b212f1eeb953ccd8c70900d88ac523205e2fe0b2d4aa94b9b133bb44e. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/ES17E1900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ed121af75770d7e955be018c8e183ce7dac7d252999a648f03be6f3618f728. 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/ES17E2000418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1c8c38ab7a893a3bb0ea82197b15a67a635a6367f24dc069d4de82b5f63ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:40Z), 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/ES17E2000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82c19957d761288e2a7540274fc9e83397c2427f1d08b19ede4c7862d653c5. 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/ES17E2000443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f9fe1bb9c48a30a2829f967ba5cc165f34dfe8ba922faed1ab3f0124bb1ea8. 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/ES17E2301662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2b177f3274f3608b81b0feb8ff14075a2ceeea3e59659b6ece5d616a1d9f6. 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/ES17E2201590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5d25883565e417fc92e32b4e4485afa11aa914e7a4d494e5fc6baa7db0e4d6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:18:42Z), 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/ES17E2301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8654bd2b329e7e394c733df2fd7e9b13b3087eb05a9ffabb2846c1fa754487b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:29Z), 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/ES17E2301641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30a875fae8b424e0cc009af830c89f9e4a1817e5e57e125a39d2c9852d2124e. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ES17E2402036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b21be93e0e3c256ed4e18ecd99811b9452e063bf18b952856ae49f28c1cd2. 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/TCAFX2101392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d95c3d68cfd5097705bcaced3a141558a57cb318a7f076581ed7d118e3994. 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/DGA0S2416343.