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 0x3e23a22b026e50e38a3c79e94c06cc7551a1e74042158dfa2fd4f9b2c07a9c17. 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/b20985ef-d1dc-446e-8ef0-b7092cc4fc57.json and https://artists.proofprofile.net/proofs/artist/b20985ef-d1dc-446e-8ef0-b7092cc4fc57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Śpij Kochanie, Najdelikatniejsze Kołysanki w Formie Pozytywki
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 0xa0b6b06b05f45c5f32d2cf43ef65f53bb748f26aca6eae91007011b9e2db77d7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM92L1400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381ab0de8f72fc14af3a2c1142de623339672ad40ae9f7476c5d52a31949a680. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM92L1400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da1e7eea779901cd17340c501c1f0271ba602e558e04e7258ec23cbd5c5b6a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:19:13Z), 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/QM92L1400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc31a226d9fd5ba50aa59b60f7f56d147c3261becc9893feca6cc99fca229e5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM92L1400033.
Śpij Kochanie 2 - Najdelikatniejsze Kołysanki w Formie Pozytywki