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 0x81d13d65be7ffd6e74133e50ac5600f144926d07d666718513b47dbca1ce4169. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c111fd6e-dc35-4e9c-9c4e-cb3967d23336.json and https://artists.proofprofile.net/proofs/artist/c111fd6e-dc35-4e9c-9c4e-cb3967d23336.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
AVICII - I Could Be The One To Set You Free Cover
We're Up All Night To Get Lucky (Pharrell Williams / Daft Punk Cover Were)
I'm Still Into You (Paramore, Glee Cast Cover)
I'll Be Thinkin 'Bout You (Calvin Harris feat. Ayah Marar Cover)
I Love The Way You Love Me (Tribute to Ariana Grande & feat. Mac Miller)
You're Gonna Miss Me When I'm Gone (The Cups Song) (Anna Kendrick / Pitch Perfect, Glee Cover)
Hush-A-Bye (All the Pretty Little Horses)
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 0x48da6b677364e0cc0a508085cb989ba4b16bb15ac1ea32de10624ba35ad89fb1. 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/DEWM92200510.