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 0x49523e41ae52285af732afbf7caeca3a89f84a9a24c0f8717fbdbadbc6786e06. 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/c2b68713-950c-4696-ae05-6343f116b9eb.json and https://artists.proofprofile.net/proofs/artist/c2b68713-950c-4696-ae05-6343f116b9eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hip Hop Instrumentals: Rose City Beat Tape
100 Instrumental Hip Hop Beats Promo Pack, Vol.1
100 Instrumental Hip Hip Beats Promo Pack, Vol.2
100 Instrumental Hip Hop Beats Promo Pack, Vol.3
Music Is Life: Instrumental Beats Mastered, Vol. 1
Hip Hop Instrumentals: Rose City Beat Tape (Remastered)
Rap Hip Hop Instrumentals Beats: The Last Beat Tape
Put It On The Line (Instrumental Version)
Westside Resident (Instrumental Version)
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 0xa13f1fd7fe0850f850b04d6731b1eb58bd3df35e3e298e87ed24271d85288d76. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:24:05Z), 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/SE6HN2466258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188889ec7216379b8495785aefe3d776792a81087a1984162fcf4b87fadcc87. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6HN2466259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa418a8289ecbbd5b0e93a22a5b5cd12baf87b16ed76f35f7d9e5cf19f8a8e06b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:55:21Z), 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/SE6HN2466260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3da914d4fca6454d96f49dc7cf485782874206606af6b2dd0bd6d85fea047. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:31:15Z), 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/SE6HN2466261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9732ba817e7b3e1e009c18f4e53ea8beb7531717aefe7dae7f1b385b4222b2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:25:45Z), 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/SE6QE2492329.