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 0x4d9485e0e79321cb4c7d467d6d0c0e4642385a57b3c60f6616b6357f47db8d84. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee730594-888f-4fc5-af09-fb6bc0c01636.json and https://artists.proofprofile.net/proofs/artist/ee730594-888f-4fc5-af09-fb6bc0c01636.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 0xc6d54281e102ef357621381997215c079e0fd23437ce3a2ea2f13db54ccd6089. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR10S1797350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d11b8c68e1e49d6a176738b39b316a23d4fef82d7392e1e6d347f2c4d8784f0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR10S1797351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec145b437413374f5d310a6c3ac1208b08a7e891ac502f44bf63b9a951876a0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR10S1797352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5f7887e3c43d11a4086b8ea5e094fc102742e6248377b86d42189834c9caaa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S1797353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc1bca1500ca766e2422b5a1ce6ebaea40c4b7e450dfd534d07ac278167a4bb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR10S1797364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbcc6deeea1432298427be03e1adbb9e09a47c62840cdba7d94afa6fe5eb195. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU7266054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e0cad2bb2b3ac8283f63095ac855a2ca7d84037b00d7ce4dc82e17b10f13be. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU7259313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a4d7e9a821dcbf4ff0e9ac95b9ee1ad1ff639d01822d05658d31efb7acc81. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBSMU7259314.
Uşşak Murabba Oldu Bela - yı Aşkınla Mübtela Gönül
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537d51eb935546329b11361530a7d9875ef50050402aa28f661a430d3237b9e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU7259315.
Uşşak Murabba Mestane Oldum Aşkın Elinden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543f0787fd5aae67ea0436341b2830b9497436e92f6a71c702e1b30f4afc34a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU7259316.
Uşşak Türki Hançerin Eline Al Dertli Sinem Del
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5675e56120720dcf5cef1b98d134c43b78095e1e5bb7a8eb23067ac9af033e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBSMU7259317.
Uşşak Hanende Semaisi Gelsene Nesim-i Subh İle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc7afffa63fdd76834afa40b29754d12afd3cec9573d89aec0aae8950d30ba2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBSMU7259318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65923a18be6aeb0aea6334b14e84303302e7e3dc4e76c056f73d98fe09dc69d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBSMU7259319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2957cb96433cd86b7d68ddf1d8dda51ed64e31010dccd6f039c92951f1a2ee3b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBSMU7259320.
Hüseyni Murabba Gerçi Sen Bu Leblerinle Halk-ı Alem Canısın
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53daa04e3e8d20aed41d0eba4d8798cc999df941a7d6c99f8b2c5c2f05aeee8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBSMU7259321.
17. Yüzyıl İstanbul'unda Musiki (Ali Ufkî Bey'in Tanıklığıyla)