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 0x3c17ed3b529d7be1732f4ae650429c19290227ca463cde0092b2058f0b08fffe. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf644ce8-c1c2-404a-891b-2ee260e08737.json and https://artists.proofprofile.net/proofs/artist/bf644ce8-c1c2-404a-891b-2ee260e08737.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mariachi Romantico/Mariachi Navideño/Mariachi esta de Fiesta
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 0x360a348ec5b2bdc5424a7e0961f78b5c25bdcdf89fc57ae8ad147debfc75e42e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXF149900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f124cf9523a584d8e7d74d13d6f09a6e9d0b7659b12b95b3f139038f2b282ec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MXF149900320.
Tesoros de Coleccion - Mariachi Gama 1000 (Mariachi Fiesta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab90d284dbc16d75e8e27cb11a76e81119758bc6408cd651a9fe434817fdf2f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF149700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440065581dbd5802c0c2414cb4e4e0a2d2c010eb774d86ecd7b9bc3cf60893c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXF149900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f124cf9523a584d8e7d74d13d6f09a6e9d0b7659b12b95b3f139038f2b282ec. 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/MXF149900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab18f9667926908c556bb85a55ead8dd1695796d0c1b837ff2a51920639e46d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MXF149700530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23c524775016dd01bd3cc1d6ce484e6e3c2058eca04d79498f996e5756d3c0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:00Z), 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/MXF149900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fabac8efa8a98008f4d5468057c308a5a2ee7a00ab5de0c784f1f29d5d83eb7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXF140100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93417340c6bbbcc6d9fd4b709fdc785b085277dee521288293d4a66cbb1f9a53. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF140100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a348ec5b2bdc5424a7e0961f78b5c25bdcdf89fc57ae8ad147debfc75e42e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXF149900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23c524775016dd01bd3cc1d6ce484e6e3c2058eca04d79498f996e5756d3c0. 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/MXF149900319.