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 0xa7d55fe75415e2e4343d287c9ab79b97fd53deccb21f304553e647d7fefccb20. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8b51bb9-3e31-4b47-a185-f8c30f11dbcb.json and https://artists.proofprofile.net/proofs/artist/b8b51bb9-3e31-4b47-a185-f8c30f11dbcb.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 0xa195840bf561da6199e5ff8547ea31e493a248dec8cc76facaba3acf3315d394. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US92U1912610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf78026ad6258a8589d5aef041d4ce18e49a0874856e7f4a2b66a5df6a5a221a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US92U1912611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4ae16203089a192a01aaf9ab9c734709e96ea2c2fee021deb44bc64b4a7c16. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US92U1912612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e83dc893801887d9924c05c749a272a7486e709492837a01469f575c2278d6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US92U1912613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b9a38e78cef5f94f0780a2ceceda2b6a070e8bd2f6174c94ee5240dceee2dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US92U1912614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f6c0e876fe17a1c21fee4abf7c2e0a32b1a2fba3219b7a7a5ef0fae7b671b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US92U1912615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716fa8a15fc87aeeffec2fab99b76690624942c46bf97f1cd058879e2c376c30. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US92U1912616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310d18d999286eead45359c7a98228d1fc91b167107db4e4019604452014407. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US92U1912617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577cce5bd900e990d204264e76925b68b62e6693a7288266aedf2b2a0770bb98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US92U1912618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4234f6bdc367eb22f2ca775d84a689e515c689edfb3d6fe541d3c458451098. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US92U1912619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5872b11d7abeda0872adc9c558ea428c4ee115cfc12d599cd556bd4fad641071. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US92U1903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8761fb5231345603e9e225dc16c0e1f3e9463557eee9b9bf2bdaeff5b208bbb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US92U1900331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e83dc893801887d9924c05c749a272a7486e709492837a01469f575c2278d6d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US92U1912613.
Dirty Dome Records Presents "Dirty Instrumentals Vol.1"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e190f585921349a0bd5f940dcc7f700fb3c7e630eeb03fdb0b4efb4929252f. 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/QZK6K2434921.
FiveSe7en Collective Instrumental Compilation, Vol. 2