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 0xb0c922493d84057d2cdae8b3e369e87043430e46c40980feefe1d15da492b65e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4515455-7503-4e59-9d96-38b742bf0fe4.json and https://artists.proofprofile.net/proofs/artist/c4515455-7503-4e59-9d96-38b742bf0fe4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nhạc Sáo Trúc Buồn - Tiếng Tiêu Buồn Nhất Thế Kỷ
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 0xd04322978c3c2fee61fecc4dbb7b901a5039dc6e2d599d9db34b284c521b0456. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZTB52237054.
Chùm Sáo Các Dân Tộc Việt Nam - Ngày Hội Vùng Biên
Despacito, Attention, Shape of You | Master of Flute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d20e9442fa2bc94231e80968168c38ea23ce98b8ab14258da2d47452db8bb2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZRP52397035.
Tình Ca Quê Hương, Lối Về Đất Mẹ - Sáo Trúc Hay Nhất Việt Nam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fa248aca66b3d3081076b49aa49389343cf3daed5805c8416604deaaf8ad7e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZTAS2431833.
Xuân Về Trên Bản Mèo - Xuân Về Trên Bản H'Mông
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ab2644e0b631ffb5a1b7151f4b78d1c2b4d3e3a6f330ff3557598ffba0c59c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTB62204615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f56bbe21cf662d97effa0811520ac3e9e6d2825fb43ac25dd504ec12e0820. 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/QZTB62204620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b8a6916d643b42d246c863d308d3e0e2f8bc4d9cd65d56c9256304be01a099. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62204614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31656630f3e36be61e48f9d8117d671f21e97344c0716e468f59b577042937f4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62204613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe55db8170b84dc7442e2b71920f25ea9498ed9fd6337bc1df3f7ee3cb1c54b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAS2431836.
Ocean Waves (Music for Deep Sleep, Meditation & Relaxation)
The Sound of Nature (Flute and Nature Sounds for Restful Sleep)
Nhạc Sáo Trúc Buồn Nhất Cổ Trang Kiếm Hiệp - Sóng Gió
Sáo Trúc, Đàn Bầu Việt Nam Hay Nhất - Nhạc Quê Hương Việt Nam
Sáo Trúc Nhạc Hoa Bất Hủ | Nhạc Trung Quốc Hay Nhất Mọi Thời Đại
Thần Thoại - Nhạc Trung Hoa Kinh Điển Hay Nhất
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8333dcf2a5df6dbda2ca26f1e59fe4ddc75bea01a21a8be7b6d1d3b18d167812. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN52559005.
Tây Vương Nữ Quốc - Nhạc Tây Du Ký Đỉnh Cao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55549876cc02ac8b2642ad76fa3fe47ddeff61a8ca943a73261c5dcf990301a2. 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/QZHN52559006.
Vong Tiện | Trần Tình Lệnh - Nhạc Phim Bất Hủ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f989b075ac718880cfb4d47fe86b4583a8ff7082561e8c1747f8b0de1ccee. 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/QZHN52559008.
Gặp Người Đúng Lúc - Nhạc Trung Quốc Hay Nhất Thế Kỷ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0672f7e26795f90491c0e76b1fb0a3880e35815ac311163fe21029af894a33b8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN52559011.
Sáo Mèo Cảnh Đẹp Tây Bắc (Sáo Mèo Lo-Fi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16bf16e2aa25f19a416dfd6e76ed187c1f0a2fa43a5721989ed7bf83211425b. 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/QZTBA2505368.
Nhạc Thiền Phật Giáo Khát Vọng - Tiếng Tiêu Buồn Nhất Thế Kỷ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d935ea50376da1e761ae179f5c3e774cfc041a6929a04d46fb2026a69940c2b. 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/QZWFF2500535.
Gặp Mẹ Trong Mơ - Nhạc Phật Giáo Cảm Động
Nhạc Sáo Trúc Phật Giáo Buồn - Tiếng Tiêu Buồn Nhất Thế Kỷ