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 0x997c38c8496dd25ca601e8f5fe3c214541725611e409aa325c25c0ef1ffa909a. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6e75f6-1195-473d-ac44-5531bd7ebe88.json and https://artists.proofprofile.net/proofs/artist/2d6e75f6-1195-473d-ac44-5531bd7ebe88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Groove of ESSR: Funk, Disco, Jazz from Soviet Estonia
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 0x545a288ba06ae5274fe99fcc784021852214cf9b6bbaaa9fa1d7c5fb15f5c06c. 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/EEER11900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb5cbb05ed82efc87effb48d4c7384a1ac36b5383a94f4a86c8ae0493b86217. 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/EEER11900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24740e234d42355efe94d256952370652c585680a9c54092cc9d193b586ff03e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/EEER11900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c158776484557b6a501a5c9a0c9f76a1888506121ca02b29a892f5b6164ecf. 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/EEER11900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19e72cc96c3110c3c1c5e8ea9b95d9fec3eccac66cb84e8f118c0bbe56afd84. 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/EEER11900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab132f365f069dca74990848fdac5a4b6de58c2894cd00b1c7374f29d476d9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/EEER11900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f45e93c6aef7e777c86ed8fa018d1272c4bd2d5429361fd0f891deac3d45a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/EEER11900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa288fe6ca0ca90c3f8be36542cf16fb6b9a72792ebf32315ddc576539f9ce5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/EEER11900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa9624335dd57327ab48dfbc016d391ceb84e2b2358c95cca0b4bcac95b9e28. 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/EEER11900097.
Välgud Peeglis (feat. Vanemõde) - Short Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3762803a5610fb72ae53bc6ec523e4160abf40ff4c4dcdde214fcf0b63344e5f. 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/EEER11900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf438e4d53e382fc16a5427de675988be58156a1ba2437cc05e8f6b5963a1f958. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/EEER11900099.