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 0x1c7fb9ab20444398f26e0737ac12124d6a6d6d5468494baa00c9cba1bbb6b082. 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/4afeee87-23d9-4164-a7b4-49b244d2b244.json and https://artists.proofprofile.net/proofs/artist/4afeee87-23d9-4164-a7b4-49b244d2b244.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music From The Musical: We Will Rock You
A Tribute To The Musicals: One Big Collection
A Tribute to Sister Act: Stage And Screen
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 0xc80659e8fe788a4f24b49cbe82fab951566f96cbe8f30745190205d7e855a9b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:16Z), 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/GBQRF1101579.
Music From The Musicals: Hairspray and Wicked
Music From The Musical: The Phantom Of The Opera
Music from the Musicals: Mellow Collection
School Song (Tribute to Matilda the Musical) - Single
Les Forces Du Mal (Music from Dracula, L'amour Plus Fort Que La Mort) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e66f3128249fbb19c8ad4896355629669ce013bb8da794403735a4f819f61c1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBQRF1215616.