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 0x1dada5707d872d176a0fdf99ec0d9423802d71417cf04355cae338a941f5ce74. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b79e7a-6dc1-4c3f-ae73-5ab9b5e804db.json and https://artists.proofprofile.net/proofs/artist/e3b79e7a-6dc1-4c3f-ae73-5ab9b5e804db.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 0x53ef054780f5c9a142481262a66a0e892da14805babdcc6c5211edbb5f65962c. 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/QZP7F2440449.
Ma Dar Konar Baradaran ve Khahoran Moslaman Khod Khaehim Bud
همسات القلب: أناشيد وتأملات للعشر الأواخر
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb3b9b57ed7930e1cdbe7ad4f2eda0c5e9150ac8bda3f2f5c816aa35efcf1be. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZP7F2552590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b11ac04d91e0e955e4cb81c440fadacecf49aacbcbf517eeb9ed9215f208793. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZP7F2552593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe3b5329e2df47cdf474097aab84347f983af754e96638e515f54e995806e8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZP7F2552594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f08b0f77fdd2e92b9e9b007eb4a33c94a0fdd40b97f31df56e1ef64bb1244. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:49Z), 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/QZP7F2552597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4d57e74288ef2133da54a4025aed3837bd6aee86d8d9730eeb4d901ba97677. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZP7F2552704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ed4c7da2c980601a99ac361b2f7323fcbeb978ee9ba77d137299733f4ded57. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:23:17Z), 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/QZP7F2553139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f223045e89235f825e8d49577b8186b568d5b38e90d816d1fbcf691f1610d49. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZP7F2553557.