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 0x318243ebcffac6f1888e8b256d2d47d1a91414449773447bbc31e6bd87344969. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2efaca0-4f8e-44e9-9464-f9f6b57e53d2.json and https://artists.proofprofile.net/proofs/artist/f2efaca0-4f8e-44e9-9464-f9f6b57e53d2.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 0x928fb475ba8c0a5f65e0967d2f14f601a13473de8f0021ee0fe0ab1f7230ca2f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/VNA2B2201445.
Chúng Tôi Là Ủn Ỉn (Lưu Thiên Hương Remix)
Chú Voi Con Ở Bản Đôn - Lưu Thiên Hương Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa34b431e41f288925d543a9238ae3c5495af14ef83417390abe6815814750b. 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/VNA2B2201566.
Chiếc Đèn Ông Sao (Triệu Lador x Teni Diijam Remix)
Chiếc Đèn Ông Sao (Hoàng Khải Diijam Remix)
12345 Once I Caught A Fish Alive (Nursery rhyme)
Being Kind To Each Other (Nursery rhyme)
We Wish You A Merry Christmas (Nursery rhyme)
Five Little Monkeys Jumping On The Bed (Nursery rhyme)
Head Shoulder Knees And Toes (Nursery rhyme)
If You're Happy And You Know It (Nursery rhyme)
London Bridge Is Falling Down (Nursery rhyme)
Cái Bống Là Cái Bống Bình (Melody Remix)
Trong Đầm Gì Đẹp Bằng Sen (Melody Remix)
This Is The Way We Brush Our Teeth (Melody)
Three Little Kittens Went To The Park (Melody)
Trong Đầm Gì Đẹp Bằng Sen (Melody Piano)
12345 Once I Caught A Fish Alive (Melody)
Cái Bống Là Cái Bống Bình (Melody Piano)
Five Little Monkeys Jumping On The Bed (Melody)
Five Little Monkeys Jumping On The Bed 2 (Melody)
Here We Go Round The Mulberry Bush (Melody)
If You Are Happy And You Know It 2 (Melody)
If You're Happy And You Know It (Melody)
Five Little Monkeys Jumping On The Bed 2
Hồi Ức Tuổi Thơ - Những Bài Hát Thiếu Nhi của Nhạc sĩ Phạm Tuyên
Các Ca Khúc Nhạc Thiếu Nhi Hay Của Nhạc Sĩ Shin Hồng Vịnh, Pt. 2
Các Ca Khúc Nhạc Thiếu Nhi Hay Của Nhạc Sĩ Shin Hồng Vịnh, Pt. 1
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung, Pt. 2
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung, Pt. 1
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung (Pt. 5)
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung (Pt. 3)
Các Ca Khúc Thiếu Nhi Của Nhạc Sĩ Phạm Tuyên
Nhạc Thiếu Nhi Hay Ý Nghĩa Cho Các Bé Yêu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea40e7867a9ad327825157f54deba57743a906807ee7ac12127ae9efb77c6b6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA2B2400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34118c252376eb00e185c83449697eda656f5b4a1b91936d170eb03f02ab18. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNA2B2400260.
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung (Pt. 4)
Các Ca Khúc Thiếu Nhi Hay Nhất Của Nhạc Sĩ Nguyễn Văn Chung (Phần 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ccd640f22aec970c6818baed3326e9d367b5f5aebfb24330777ba815b86223. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNA2B2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc4aa819acca7a4ebececdac37608613c9869bf40e981578f719d84522fc5fd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/VNA2B2400316.
Baby Shark Dance (Version 2 - Hyper Records Remix)
Hush Little Baby, Don't You Cry (Lullaby)
Calm Piano Music For Sleeping Baby (Lullaby)
Baby Music And Soothing Ocean Waves (Lullaby)
Classical Piano Music For Baby Sleep (Lullaby)