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 0x49bcf554ded4567257c90e6362842fbfe163b09bd7ecced6829ff05a2b1db598. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a5e9b07-a7ab-47a9-9c0a-2e9d2885a676.json and https://artists.proofprofile.net/proofs/artist/2a5e9b07-a7ab-47a9-9c0a-2e9d2885a676.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x37e2497f1fafa3d292e9ffde409322f4c3139b3ab7a8ed6a3771bcef9fe67878. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR5511000029 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0ecd5df2f9e5fc30f752ab98927eb124f6909fdd694d6c0adb8e51769cc510. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR5511000030 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69142c5390148207a77a07472cc64104b249492b4dbf4da4b18838a55c8b45a0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR5511200014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6017bdac5222affc6891fca970c5b44c35979d56a84165b00cd9147eb1b09a06. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR5511200066 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e5eb4da74d86a094f61e346e0eabd2c23a9efcd0a66713c45c890dbf9d9c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR8881500011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85034d74445ba2f39a0427a024c1ca64b8bd3ddd724d6cc78d4b30120504ecb4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1983810 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1140f23a32e877a26f6603137f6d262acb4efde425e9747b1b06720e0fadd12c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1983813 — a six-check JSON result.
Su Sızıyor Zonguldak'tan Gelir Maden Kömürü
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c73e95636fe308160f390a731d09c117c6dfda30658c87361975f231b63301. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21977208 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa02b56d46e6fe1471ccb80ef39c3e60f30bb9f954de4e2e63ba8db20ca2e28f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRCDR2400200 — a six-check JSON result.
Ömrüm / Dalaman Kültür Merkezi / Potpori Çiftetelli
Kardeşmisin Kalleşmisin / Silver / Tridine Bandım / Potpori Oyun Havası
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0df284fac232a3548ba9f4031ad243051cf3651526910fe6bcb88189573ddb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRCDR2400210 — a six-check JSON result.
Ömrüm / Dalaman Kültür Merkezi (Potpori Oyun Havası)
Boluluyum Bolulu / Ereğlinin Üstünden / Sarı Yazma (Potpori Oyun Havası)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb308e81d2d7c32ef150e6144e3fdd0a9fe289a79a23d0ff2abbf59d7dfa8d69b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRCDR2400409 — a six-check JSON result.
Bolu Sallaması / Dört Öküzüm Var (Potpori Çiftetelli)
Bolu Sallaması / Dört Öküzüm Var - Potpori Çiftetelli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624bf94616db0c479f2f8936724a04d5bb06b7ec2eab9742e5ee44c7162b805c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRCDR2400408 — a six-check JSON result.
Naciyem / Al Yarim Buda Sana / Olsun Olsun
Kardeşimsin Kalleşmisin / Selver / Ömrüm / Dalaman Kültür Merkezi / Naciyem / Al Yarim / Olsun Olsun / Bolu Sallaması / Goca Herif / Boluluyum / Ereğlinin Üstünden / Sarı Yazma (Bolu Çiftetellisi Kesintisiz 30 Dakika)
Ömrüm / Dalaman Kültür Merkezi / Naciyem / Al Yarim / Olsun Olsun / Bolu Sallaması / Goca Herif / Dört Öküzüm Var / Boluluyum / Ereğlinin Üstünden / Sarı Yazma (Çiftetelli Oyun Havaları Kesintisiz 30 Dakika)
Naciyem / Al Yarim / Olsun Olsun / Bolu Sallaması / Goca Herif / Dört Öküzüm Var / Ömrüm / Kardeşmisin Kalleşmisin / Selver / Boluluyum / Dön Dön Dönelim / Eminem / Tridine Bandım / Ereğlinin Üstünden / Sarı Yazma (En Çok Dinlenen Eğlenceli Çiftetelli Oyun Havaları Kesintisiz 1 Saat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52895edcf43c07ae9f398ae243909e48362702161a2f27721feac929ab157ecc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRCDR2500049 — a six-check JSON result.