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 0x9553c2e2fb060b676d60cb42d8fbe3666af49813c03a3240562b2b718b1907c7. 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/c37b81ba-4d6d-4148-a437-19e85c16ced0.json and https://artists.proofprofile.net/proofs/artist/c37b81ba-4d6d-4148-a437-19e85c16ced0.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 0xe7719ec6512a8c9ef2c344d737f5ff4a8286c6cce095a16eaf0bf4ae4cdc46c0. 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/ITI021600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f12ad406347c4707e7677e6beb1e2ca93481038293a6b11b72fa9580969763. 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/ITI022000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f084050742be26a1d96135206fcfbb1f503c8a1eeed2c75606d3e9456bdd0e. 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/ITI021600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbede299da12405428219ea86b7fd1f6eca4172d38194af81d70d68d726dde72. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ITI021600083.
Soulful House Tributes Vol.2 (UnforgettableSongs Revisited InSoulful Deep House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d84a04e2f6e5f5b0800a8ab61c0d4a144db6442f7095072a83580503afb2ed. 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/ITI022000518.
The Irma Christmas Box (Snowy tunes in an icy lounge style)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cfd7ccd6e60bc3d2a62afde7abd4993d9c96d2aa058dd74e7057f005db5653. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITI021000308.
BOSSA LOUNGE COVERS (Popular Songs and Melodies covered with Brazilian Lounge Moods)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f12ad406347c4707e7677e6beb1e2ca93481038293a6b11b72fa9580969763. 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/ITI022000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c836d41cfb35403609246d5694b4024d4f7f9d6e0ec0e2c199fd928ad0b4076. 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/ITI021300726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fda5ac8f901376229b9a2f28600db7f27f44f8152572c2be7f0d56202a3a6a. 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/ITI021700545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702274b9a02f60b68806ce0b8283daf9ceb5ba8384c72e73562ff3df9d654b55. 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/ITI021700557.
Hotel Breakfast, Happy Morning with Deep Focus & Chill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918c1c5d0633e5f37d1c0ac7cdfd0d2ec1dce21343eb4e3506c3df7b71e2e262. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITI022300111.