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 0xe5add9db4988d18a71e1e113002368ca32304edacb2df56af64eba0e03a0fead. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b710a4c-80da-48a8-8dc2-78456080365c.json and https://artists.proofprofile.net/proofs/artist/6b710a4c-80da-48a8-8dc2-78456080365c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vivaldi: Magnificat in G Minor, RV 611: XI. Gloria
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 0x6e48406f5e8bd7fce8af6f25841d49ad1598c00e3b9935133e44e707f78ee359. 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/GBAYC9801317.
Vivaldi: Magnificat in G Minor, RV 611: I. Magnificat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1678ed42a17714e16c851e60384c58f3fc2803e22665541c3b04215d5939c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9801307.
Magnificat in G Minor, RV. 611: Magnificat
The History of Classical Music: The Best of the Baroque Period
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1678ed42a17714e16c851e60384c58f3fc2803e22665541c3b04215d5939c2. 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/GBAYC9801307.
The Most Relaxing Vivaldi Album In The World... Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0211e3ef78b634bf8d6170ca9f5c4ce85dbd4f260554c0da97975880b26b46. 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/GBAYC9801324.