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 0x94b58eff3cedc56222f00917ae5acdc95c07663434f7c74854f98ef4424781c8. 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/8e03b4a5-5423-4c25-8f48-b0522d2a363a.json and https://artists.proofprofile.net/proofs/artist/8e03b4a5-5423-4c25-8f48-b0522d2a363a.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 0xb454cad79caf8c70ce18f92f948836c856ab84e6f77b17b9856326eda211c14c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:41:57Z), 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/ES60B1300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2064591d8042ba4b647c0b621b896194040d4f3d709906ae306a6e8ae5109dc6. 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/ROCMA1410024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77696fbf327ece28e54db1e74ec9679c8ad459368723767720d40f1bda304a1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:05Z), 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/TCAED1962864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf7df542ac78593994d3fe89251fe8410d5d92c91a319b5a237e8e5ceefff3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:37Z), 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/USHM92100558.
Oana Radu - Muzica Sa Cante (Raduniada Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4726674c28e971fbcc24b254ba824020ecc1d974525bdfca06cabd850218c172. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCAHG2378938.
In Viata Mea Nu Vreau Sa Mai Aud De Tine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928877b39d9b8ba6397bd0c654f9dc1ba66d31df6c9ead21004b9ba5c4fc095. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:43Z), 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/QZZ972405806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8d3ec469c9d8068a1b0b894436cfd2a25a8271539e6f19ab2b53f5bd9bdd30. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT6622540786.