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 0xa077366b9bd07d6c71bd8b56d3ee03235edac455b551974a9e4d4bd94735e0d6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cfe25f9-72d0-4039-b1bc-ae140787a1d7.json and https://artists.proofprofile.net/proofs/artist/8cfe25f9-72d0-4039-b1bc-ae140787a1d7.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 0x9313bda0b2a5337ad6f4802324633a22eb83f47679f5f5c3033741df76fcd135. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEHY11700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73886356015e17972ed5af61e547eed822e557c629934136b26d664705ff22. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMEN2069910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6375dd61df46471af28ec4b367778b7bbe1a8120431c0c9af84a46d18bc47d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEN2034218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6375dd61df46471af28ec4b367778b7bbe1a8120431c0c9af84a46d18bc47d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZMEN2034218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9571bb60fb761fdea996ff65e430eec9db2026b808026b1ad0dddb0ad1e5df0c. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZWDE2317577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779e30c4722c40dfc8fc66c76d93e4732f1caaf49640e807504b800a1698c7a6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEN962335201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779e30c4722c40dfc8fc66c76d93e4732f1caaf49640e807504b800a1698c7a6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEN962335201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c3a80d3322ab39386650c25217b555f39d2a0d7f2053504accc6f8c4533cb4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEN962335207.
Étude No. 8: Through the Window (C.B. Rework)
The Echoes of Women - International Women's Day 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76363ea00ba4923edb4fbd4d69fd95bf2312842c7ed5c1e01ce140a922257656. 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/DEN962335202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790d29502d953f6b73527e24520f3cf0014da666fe87dd41b7389d58702ccab. 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/DEG931910965.
Adagio in G Minor "Albinoni's Adagio" (Arr. Awadis for Piano)
Giazotto: Adagio in G Minor "Albinoni's Adagio" (Arr. Awadis for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019570a7771839e389cb2e07946b9157664d8d76031d7839efbe2a8645ab37a0. 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/DEN962402130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019570a7771839e389cb2e07946b9157664d8d76031d7839efbe2a8645ab37a0. 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/DEN962402130.