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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ef5f29bf977d48cef5aeaed67a000c43765dbb7f312abd7bce45dc1c70c730. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e28c6c49-5913-4c4e-95a3-45858ab015e3.json and https://artists.proofprofile.net/proofs/artist/e28c6c49-5913-4c4e-95a3-45858ab015e3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce900328ebc2738584c0ad6026b501ef6585c3676cda90005cc4e6eed78157b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:21:54Z), 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/VNA0F2325170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399e01a7ac918c562581787b653bfc89f61f4dc40bc261c254d3729da7e9e39. 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/VNA0F2328088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f71d93d43db0217e5867c75f35e71a54a4f25a780d867e915eb017910bac6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/VNA0F2403515.
Chớ Nghe - Vật Thính Vietnamese Version (Black Myth: Wukong OST)
Muôn Sắc Pháo Hoa - Uchihage Hanabi (Vietnamese Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c7043d2d35de501458bb8a117f38211f454b66c20b64e55b544b8e9ec8e889. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/VNA0F2406402.
Dâng Hiến Con Tim - Shinzo Wo Sasageyo (Vietnamese Version)
Cung Tên Đỏ Thẫm - Guren No Ymiya (Vietnamese Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172395136e59d8747e4e50920063e02c0b2a08c3ab9cd5413981513bf40a9952. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/VNA0F2410846.
Gửi Em, Dù 2.000 Năm Hay 20.000 Năm Nữa…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ab64b0a083af363723d8b9ecb9da202c47d996e22b7a3169049a6833cb0c50. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0F2502213.
Đôi Cánh Tự Do - Jiyuu No Tsubasa Vietnamese Version
Tiếng Gọi Nơi Thinh Lặng - Call Of Silence (Attack on Titan OST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e87b3f120696b0d929109ca19eb0ea6b4983f9ece15243a0ae1ecdd1fe3b89. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:52Z), 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/VNA0F2508128.
Tỏa Sáng Trong Đêm Tàn Khốc - Shine in Cruel Night (Vietnamese Version)