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 0x0e72af7bf5a15a58b43d3e59c0ea700bd77143c9917117b7a0caecc21f8a7ba0. 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/9bd575b3-de9a-46bb-af5a-7cd4ca576bca.json and https://artists.proofprofile.net/proofs/artist/9bd575b3-de9a-46bb-af5a-7cd4ca576bca.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 0x4dcc2704b00d2893143e347f7673fd3c39f6909893f4a21c24fa3f6acbe4b0ce. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACL1689380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47228d1f1c8e7994bd8177bc5f80ad865aa621283b485c4b44f5389120d175f5. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCADS1895666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7bcba7be749199819c4cf60690109b96b134fdfdf40adfc91c08096d92275e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRX202119494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b118e582c216026c2ccf3df618473bed1d9a8b9907fb7ed77078ed60a6784fd. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:49Z), 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/FRX202119495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244bbe186f982888afad1ee38bdbc1cf494ad3a9da9d446e976a5f1a0bbcbc92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0P2352266.
Mirror Akusztik Session (Dalok vonósra tükrözve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8503b947e2783a02f0f45959adedf1af3f71491b2c39672d7cd1e0ee6a2b39. 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/DGA062568679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74aca375f3e10bd7e4011bfa22885d1a4caad7f59e6975947a1165059503167. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA062568680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ea850fa5738954d2bab45a6b4c4635d0bd2a18b1afe101940d25a05b9cae4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:56:57Z), 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/DGA062568681.