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 0xd58c9eb19e703a3892375b3c7aa2bab481207470faf75072cf1cd21098526181. 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/d4ba5179-dca6-400e-90f3-3e1762f1401e.json and https://artists.proofprofile.net/proofs/artist/d4ba5179-dca6-400e-90f3-3e1762f1401e.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 0xff598710565a8a2b44a19a927aff574823e88ec9263096321c7ccd0042fe4f58. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/MXF010001362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf9cd05829d0dd3b43e64eab1a7495c5301fadbe88b8a2defdb2dc56e416c1f. 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/MXF010001359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356f64609885510124d909f0814c06beed47840c124d832918b73b06e64ea717. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:34Z), 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/MXF019501083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ed47ad2c7adeee08675a22484e79db3c031a12781b38afb0bc0e7d7dd67431. 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/MXF019901418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2ad8c2e8e2263ac64e573d75b5538f3b7e2f1cc2c47ac4d12aaca732aec277. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF019901437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581572fbbdec978edc2162fa0bd117600ceaf1274066b4d887028bfed683c534. 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/MXF019100481.
Tesoros De Coleccion - Manuel Bernal "El Declamador De America"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c105928a64beb3f32df1e5fa105901a83db9790fdb9a05d2759a798183aa3a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MXF018500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324d3c48df35f2529b63d54b353262af7ce942769d93e83f105ae8dbf2625623. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:31Z), 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/MXF018500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce01e06108aa75c8b443ec6520efd6749d69ab53c204be444fc11de49ce6996. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF019901254.