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 0x1be0e7f3af7fedd2139e368ddd78040ffe355f7c49811a0af962efe0c61b149d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92b800ef-c036-4be3-b3be-10ff7acd5ab1.json and https://artists.proofprofile.net/proofs/artist/92b800ef-c036-4be3-b3be-10ff7acd5ab1.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 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 0x4b7e86495fe702d85d7ff4266fffae50e8b2e29f8865bb8716d3795e68f0deb5. 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/ITAD81500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036be48ac5091a0b5589cc9e2489799ac6407cccf202bb01cbdbff09cdc75c6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITAD81500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e86495fe702d85d7ff4266fffae50e8b2e29f8865bb8716d3795e68f0deb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITAD81500222.
Sunset Chic, Vol. 2 (Deep & Cool House Music Vibes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486023a53579016194075eb11cf8de71e41328d945d8cfcbbe27367ecac58c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITAD81700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3cbc25b89348012a04c8a741c8fb02abd51b476b3745ffe02a4c650c9caebe. 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/ITAD81600017.
Be Happy, Vol. 2 (Deep & Tropical House Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036be48ac5091a0b5589cc9e2489799ac6407cccf202bb01cbdbff09cdc75c6e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ITAD81500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba0e5192366a6b0f04a3a5184aa0783af7dbee11ce2f60b1ef20a8f9f75491. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITAD81500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486023a53579016194075eb11cf8de71e41328d945d8cfcbbe27367ecac58c8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ITAD81700016.
Deep House Vibes (New & Best Essential Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3cbc25b89348012a04c8a741c8fb02abd51b476b3745ffe02a4c650c9caebe. 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/ITAD81600017.
House Addicted (The Best of House and Nu Disco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba0e5192366a6b0f04a3a5184aa0783af7dbee11ce2f60b1ef20a8f9f75491. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITAD81500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5b03535565f8ed5c2cc25c746a8872f0fea101e8afa48bf1b99c963850a561. 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/ITAD81800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee03f0c3b1447afccffef129b08c9675a47fe983a3dbe5601e4ebd8356dc369. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/ITAD81800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1db0e1def593a7f53e1b63bcbfb020f93992bf6ddc2a2a75525ed53bd7978. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITAD81600018.
Sunny Sunday (Feeling Good Deep House Music Set)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486023a53579016194075eb11cf8de71e41328d945d8cfcbbe27367ecac58c8. 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/ITAD81700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486023a53579016194075eb11cf8de71e41328d945d8cfcbbe27367ecac58c8. 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/ITAD81700016.