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 0x011bdd8e6c6c7011d51d5c37c63efa6721a81e43d1b998290d588465fd9222ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e133314e-4bee-4035-ab70-6bd2639b8671.json and https://artists.proofprofile.net/proofs/artist/e133314e-4bee-4035-ab70-6bd2639b8671.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gladiator - Music From The Motion Picture
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 0x73b0367365327dca42d5b19a9d6a71fa77d208b3bf8866bea5d5b8b7079e9049. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUMC0000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8bbee98127d02b5bfb238e4292e937fbc65b8d6a4ac7ca8063e2d32603b90c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUMC0000062.
Now We Are Free - Maximus Mix / From "Gladiator" Soundtrack
The Ultimate Workout Collection: Blood Sweat And Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb21b14b457b6bc7b08708aabe4a3adbdf983653e239f5b6131ee1bd18f2306e. 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/USUMC0110060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb21b14b457b6bc7b08708aabe4a3adbdf983653e239f5b6131ee1bd18f2306e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USUMC0110060.
Now We Are Free - From "Gladiator" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8bbee98127d02b5bfb238e4292e937fbc65b8d6a4ac7ca8063e2d32603b90c. 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/USUMC0000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8bbee98127d02b5bfb238e4292e937fbc65b8d6a4ac7ca8063e2d32603b90c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUMC0000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8bbee98127d02b5bfb238e4292e937fbc65b8d6a4ac7ca8063e2d32603b90c. 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/USUMC0000062.