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 0x8a0fe2f2d9eeb12c5e0fe363c4a269feecd8f7b9b0551472bb636fda950ebb89. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/861e54a3-a55e-45ba-bd48-2ea4f35cf081.json and https://artists.proofprofile.net/proofs/artist/861e54a3-a55e-45ba-bd48-2ea4f35cf081.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 0x0f00019df7a8cdae2514ee3c47949f902b4c6df13ab58e0c0a100b76815b8824. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN42538406.
أور ايقيمي ك لخاطر - Ur Iyqqimi g Lkhadr - ⵓⵔ ⵢⵇⵉⵎⵉ ⴳ ⵍⵅⴰⴹⵕ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74228f8d5b915717658f9d41d32de55136ea25d1117c406c6d392f85f3fb0ab0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN42548064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c04b63a4146af6bc2ee4416b5f0eb0426a65a819648556321e111d4784620. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZHN42529735.
Mach ijran a yil inu - ⵎⴰⵛ ⵉⵊⵕⴰⵏ ⴰ ⵢⵓⵍ ⵉⵏⵓ - ماشي جران ايولينو
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7598e8d308b3f7598a6a0cd0ac1172ee7f70a3baf674da6c1c559aa5e664ecb9. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6J2599878.
May Ghifi yallan - ⵎⴰ ⵉⵖⵉⴼⵉ ⵢⴰⵍⵍⴰⵏ - ماي غيفي والان
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fecd52424baeb63f895a20f9f4b62ce07a913f1f2dcfae688e9fb6c9c967ad. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTBE2558385.