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 0x611a84b39ebb9b24780fa5e3fee16854de614bdd779810add631178ef813137d. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d809049-756c-46b7-aa80-24ced4228999.json and https://artists.proofprofile.net/proofs/artist/7d809049-756c-46b7-aa80-24ced4228999.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 0x66a4d257a7c231e60eb9b594230d31b433c9230ab3f606a9860a423f4810b4eb. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZZ7N2493829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad577094fb767117f13c70b4785b3d13ddd953fe61129586aba32be9d4bd941. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7T2494875.
Kamal Muhamad - Jazhni Sarisal | کەمال محمد - جەژنی سەری ساڵ
Moein - Ghamgintarin Ahang | معین - غمگین ترین آهنگ
Kadim Al Sahir - Bektoub Esmak Ya Habiby | كاظم الساهر - بكتب اسمك يا حبيبي
Mahasti - Delam Tangeh 2 | مهستی - دلم تنگه ٢
Bahaa Sultan -Aaks Elli Shayfenha 2 | بهاء سلطان - عكس إللي شايفينها
Hayedeh - Meykhooneh Bisharabeh | هایدە - میخونه بی شرابه
Mryam Ibrahim Pur - Sazi Nasaz - مریەم ئیبراهیم پور - سازی ناساز
Sepideh Khooneh Khali | سپیدە - خونه خالی‌
Mahasti - Yare Dabestanie Man - مهستی - یار دبستانی من
Mahasti - Shirin Joon | مهستی - شیرین جون
Hayedeh - Ay Dida Pari | هایدە - ئەی دیدە پەری
Mahasti - Yadi Az Gwzashta | مهستی - يادي از گذشته
Hayedeh - Dokhtar w Bahar | هایدە - دختر و بهار
Mahasti - Sadayi Dar Shab | مهستی - صدایی در شب
Mahasti - Andooh parest | مهستی - اندوه پرست
Hayedeh - Bhari Javdaneh | هایدە - بهار جاودانە
Hayedeh - Bar gor lili | هایدە - بر گور لیلی
Awetabwn - ئاوێتەبون (nazanm chon awetat bm)
Tasa (xafat naxom la shax bm w la shar bi)
Ay Ka Mn Grftari Tom - ئەی کە من گرفتاری تۆم
Are Wara Shamal Wara - ئەرێ وەرە شەماڵ وەرە