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 0x145e2a983e3b5dbf76c1e682758d1191d92b1dd7c89d0fcc7971614f01cc0a7d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4fbb518-e852-48e8-a0ba-b6d8b9d70838.json and https://artists.proofprofile.net/proofs/artist/b4fbb518-e852-48e8-a0ba-b6d8b9d70838.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 0xf71d882dc280fefe9dbc2e17b21a53231b4ad2866099ebb8f4708728de4c992a. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FR97Q0625003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2998758e558cbdd0c2fd9dc5751d240cb6b2e83042f9534f80f4e819f0415. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:24:43Z), 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/FR97Q0625005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037217977fb9d7e797f87000870f1058deef64996bbac36d4feacda784829a9e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR97Q0926204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c8c9bdc3bea28e8e91daca81ff1f4e77a479570039bd07d734f63e7abcae0. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:18Z), 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/FR97Q0926207.
Let's Party With Bikini Machine (Instrumentracks, a Collection of Cinematic & Groovy Cuts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a6065f0d116b58613723359f2d1c9ae02989614cccee0bd650444eed25f6e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V81438952.