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 0x2bb5bb0cbaa34aaf6c762f4043f570295d86bd95baf3b1f0504fb8681d549d1e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42df2c58-d82d-437c-87fd-4b540d5a19f6.json and https://artists.proofprofile.net/proofs/artist/42df2c58-d82d-437c-87fd-4b540d5a19f6.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 0x42c1fae6b6b5381b1b9b86bc18b7ac71bb8b91f1867950e08461296c4706ba87. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBLFP1595533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c1fae6b6b5381b1b9b86bc18b7ac71bb8b91f1867950e08461296c4706ba87. 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/GBLFP1595533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ed0cfc0cd23814449bd697dd5b9d985cfb170fe50a7b757942c2109c2f67a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHM2014278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc50dfbf5a8e628e29efe3bd0b6ec106a18d0ee110619a978db195fa497db5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2152091.
Lounge Chill Music 2023 - The Best Lounge Music - Chill Music - Soft House - Pop Music - Tropical House - Deep House - Chillout Songs - Chill Vibes - Cocktail Music by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddfcf833aa706ced30814d9aaf06c28a8e27ad5b74a07759fa7ccdbba01f8c7. 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/ITJJP2000020.
Lounge Music 2022: The Best Music for Your Evening by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddfcf833aa706ced30814d9aaf06c28a8e27ad5b74a07759fa7ccdbba01f8c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITJJP2000020.
Morning Coffee 2022: The Best Music for Your Good Morning by Hoop Records