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 0x48f20f1429378bd20ff7f7127c46e8bcf33b5ad39eaae143010347209b3bfb7b. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae32447b-e474-434b-b465-5925af207527.json and https://artists.proofprofile.net/proofs/artist/ae32447b-e474-434b-b465-5925af207527.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf1c59cb8eb44a4c08837ec9d328a5db5646049919673f080f780e316c151c3e9. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:24Z), 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/USA370576281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bd4a5a4117e4f1c08b7d16714ddb905a9f475fde4aa6ab341b238cefc76534. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA370576292.
Variations On A Dream - Music For The Celtic Harp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8371845eb15c5b638c8ef5ec8cc64e84c52a6e0b31ffff9a25c154ad02e81455. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:45Z), 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/USA370576262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9921ea7805564c646be46134d8ec210bd1230f6947296efa5eb53c72b27edaa3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:50Z), 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/USA370576276.