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 0x99ba4c998ef185f14b3c798eda75750763fbc9687f607a3518d423d13c7cbceb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c3ecad-42d7-4e94-a5ff-f3c82640125b.json and https://artists.proofprofile.net/proofs/artist/64c3ecad-42d7-4e94-a5ff-f3c82640125b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Instrumental Covers of the Chemical Brothers
Instrumental Covers of Insane Clown Posse
Instrumental Covers of Daniel Bedingfield
Instrumental Covers of Between the Buried and Me
Instrumental Covers of Bachman-Turner Overdrive
Instrumental Covers of Hank Williams Jr.
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 0xce8eb11f7a7fd7069ed0a44a564a76fa5a0ec2283c098f80bc08b02788cbc4b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ22B1808967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3039285daeb4b458f6dd350b990056009d65d5d6924af976464f34878231bd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:16:38Z), 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/QZ22B1799032.
Instrumental Covers of Crash Test Dummies
Instrumental Covers of the Bellamy Brothers
Instrumental Covers of Hootie & the Blowfish
Instrumental Covers of Jefferson Airplane / Jefferson Starship