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 0xf6ebb3b7f6aec194d564d652986d08bd7881b0ad0492d739452e86152d007856. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a02a688-8f9c-4f55-bec7-7c0f1208a1ad.json and https://artists.proofprofile.net/proofs/artist/6a02a688-8f9c-4f55-bec7-7c0f1208a1ad.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 0x99ce97d8dacf20c5a4cb65429da89a2dd6d0706d245aab656b143863654d7ea7. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USUM72107790.
He Stopped Loving Her Today (The Voice Performance)
He Stopped Loving Her Today - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3673b3801f01c87c08405e275a985c3cf60026769bd174135d9ec93b4b9b6d. 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/USUM72108370.
The Keeper of the Stars (The Voice Performance)
The Keeper of the Stars - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495d1ceab1bf916909f50089d4397d11566eff925002dcbd017e30a9b95e9f6c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USUM72108993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa18e9292e7a5621776c8bac9894026a032a2ea9d0f1e3dd1a215e2931581a01. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USUM72108992.
When You Say Nothing At All (The Voice Performance)
When You Say Nothing At All - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5f969c71ede3b98c6ad8ccb33ab8db8c1e2c4b502e5e15a4e032f08bc4000. 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/USUM72108991.
The Season 20 Collection (The Voice Performance)