{"copyright_id":"0xbc07f4e1b2db510ded60ee7931267c7debacc563aed2572e9dd1ff9663ecd39d","name":"Vassilena Serafimova","registered_at":"2026-06-11T18:45:22Z","symbol":"NIM0089655","token_address":"0x0b945becac4036f0bd63288730ec9caacac0f7c2","type":"artist","uuid":"44e9ded8-a652-4067-8a1e-dbb068c3daff"}
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 0xbc07f4e1b2db510ded60ee7931267c7debacc563aed2572e9dd1ff9663ecd39d. 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/44e9ded8-a652-4067-8a1e-dbb068c3daff.json and https://artists.proofprofile.net/proofs/artist/44e9ded8-a652-4067-8a1e-dbb068c3daff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mare A Mare - Sequenza Version (Irène Drésel Remix)
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 0x32bdb5af249521c336696d8840192f908a6e88c148fd00d2e6816fdd269beabe. 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/FR9W12217246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06849f32aaa197739ede10bb3d5256faba24bf4cd4855163fb886d1a6712e8. 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/FRZ052000541.
Organ Sonata No. 3 in D Minor, BWV 527: Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42518b334fa962d75a1a4e488646a77e39c3bb7dd22fb6ef2f4a13e018935b84. 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/FRZ052000543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f29a075c62a2aff58ff714fb0a28527c399bc25a87c89fdab76f436953d3b6. 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/FRZ052000546.
Cantata (Sheep May Safely Graze, BWV 208-IX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35443db3e8237a30b283b699261b36644be7209e928f02070a8efb9bf8e2ba76. 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/FRZ052000547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613c56ba3882491d1c7047d3b56cf2455002cfe19ef2d234e432fe39f676d79e. 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/FRZ052000542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a003e5b4f2932aad190fc45cd5f9d0f3893d91fc01c995b3a53d3a850f11f. 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/FRZ052000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf44c65e71d9fe5a541a5ac7421953279b5b0f9382ad5ac80dba46feae2643. 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/FRZ052000549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d5766cb9bf4f8292a15315ae169c7565a412fd3304949d1894b6ab2f0de1d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM71600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f23e7b5a8a0d4be0d9bab932bb482ce75fdb4dbf9e4dc966c08e2300912689. 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/FRUM71600413.
Mare A Mare - Sequenza Version (Donato Dozzy Remix)
The Dawn - Sequenza Version (Pional Remix)
Transgressions: SpiriTango Quartet (Live)