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 0xa582540e9ec25cca582cd0ef514a21131d5056d39fbc3c4999c652707cf29690. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd397454-1f2d-4dd9-9ace-76af5490c58c.json and https://artists.proofprofile.net/proofs/artist/cd397454-1f2d-4dd9-9ace-76af5490c58c.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 0xbc6ce8fb7e0e5f39bc3a30cb24844b89763d6173a0d2a0f0ca543783647a649c. 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/QZWFS2504346.
Baby Sleep Quiet Time Sweet Lullabies Music Box Lullabies Sleep Lullaby Baby
那年盛夏 (青春是热烈且自由的盛夏)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9986526ff553cff3e83eb8aae6cd4476232864cd4210f9926c96654a87fe07b6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2534530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa187c9990bc99e5ed225c2a63cf9d7fc896687c41be3fb2bd2c30e1ecc3b8922. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3EZ2505692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf964154754fd57e4b2a18523920829c0450dd3a9d87edbdf2435ea80967a0c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:07Z), 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/QT3EZ2505693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f35beff158c07252295b45d5f1315744d521d8757951e42d5433e4539a29936. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:40Z), 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/QT3EZ2505694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92248e65502ecbe4bf6ddd09f4be14dd5ff00a8c674d7f102e038b769647865. 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/QT3F22562044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4109a6d34132ade15a3e610719d86ee38ab00bd0df86b6ce469b0555fbdfede4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F32525699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c6f5aff2bb181ec4726b61c7e3172c172fb7752d7729c908eeca49ae3ac7ee. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:40:41Z), 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/QT3F32525700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2e60ebef67c497a922f5a87be72ce37e9725967d7ddef3bae802dd7de1803. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3F32573495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaabce75f7186bf8605d8294cfacbdadcba2a9787ba00fb4a660cdef1b270096. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F62559452.
Chinese classic traditional music Famous Traditional Chinese Music 中国传统古典音乐
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d0f63a77af087776ea9c05210a5c1cd5e97e6babac7f345e5795539e72fdc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3F62547722.
Luna（Chinese-style rap）East-meets-West Rap中国风格英文说唱
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a3ee3dee1bbd52a2a3b1060880d0934630e2369c8ce170770d08c634f4338. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:52:45Z), 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/QT3FA2503369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c1b1d362fe4ce01b91f2c4af9fc26bf5565d66e1fb1d6e5a55f8a735428e2a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FA2563696.
佛顶尊胜陀罗尼 梵音歌曲 佛顶尊圣陀罗尼 格桑梅朵
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabfa083c6b8f45b76d216229f59e8767b9418f02f8015b7e781bf09b53c429. 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/QT3FD2598742.
没出息-本来应该从从容容游刃有余
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83063ac9661420b17cab54dd8ab913949ded9b48503a701bbb7bb9792aaef4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FE2560014.
The Tortoise and the Hare Race Again 龟兔又赛跑
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa453267160572037f8b2b48f2edb8964c4a461def634910c0f972cc3554776b5. 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/QT6E82565818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2206d1e4b337c4458bde56d4f7446e893bbb3109d040f4f91931ce70a976248e. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:33Z), 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/QT6EB2543916.
（倍速版）The Tortoise and the Hare Race Again龟兔又赛跑
藏在罐子里的爱（只是一层薄薄的土，人与人就再难相见了）