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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54381a2ce2e8906a750e3d130648e84c9f0e83cb2337f6793918eb63e829309e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85dc533c-bf61-4841-8694-cd79c25fa6d4.json and https://artists.proofprofile.net/proofs/artist/85dc533c-bf61-4841-8694-cd79c25fa6d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beach Grooves Maretimo Vol. 1 - House & Chill Sounds to Groove and Relax
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38df5ca0451f0c750e9574aefbbec377470adbced9da511929a2f167b58da48b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH331803579.
Tristeza e Beleza - Balearic Terrace Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330e2cc6ab54c7e7bd343d5273a7f15c462f0ac5ca6321020165294485cab243. 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/DEH331803484.
Maretimo Chill Radio - Best of Vol. 1 - Positive Summer Vibes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431cc8bd015401ffb1e677c36f455a34b38a2a9b29dd18d2dc6e371833324910. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH332003766.
Beach Grooves Maretimo, Vol. 2 - House & Chill Sounds to Groove and Relax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c9aa64f30d4570e21a6647b3be6e44e10bfafdb8513e9077278921c6f96df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEH331803578.
Masterpieces, Vol. 2 - The Wonderful World of Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c9aa64f30d4570e21a6647b3be6e44e10bfafdb8513e9077278921c6f96df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH331803578.
Beach Grooves Maretimo, Vol. 3 - House & Chill Sounds to Groove and Relax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb715a2c7bff5577f4314cca8343acf4fc3bdef6ee8cb6dc0ee06e52b93183caf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEH331903741.