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 0x6d012c073dbc1dab6f2b7c766426f513177dcbf73a76ae10f40b13f87514671e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7718ec87-b688-4f52-897f-1b814495e8c3.json and https://artists.proofprofile.net/proofs/artist/7718ec87-b688-4f52-897f-1b814495e8c3.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 0x3e152c76d7d7c99aa93474c5deb104df8ee6f3f8a8c11a30cb9e69762042bdae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKC371700587.
爱恨之间（《蜀山战纪 第一季》电视剧片头曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943176d69859f1fd2607c12070c5d28a7d2f44d677c71eedd8a0284885f63bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731680814.
乱世俱灭（《蜀山战纪 第一季》电视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533a2ef7bd6c8cbf17962eb8fc38ca56f0156c126fd290b0d84e4cdd38a78e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731680815.
我选择喜欢你（《蜀山战纪 第二季》电视剧主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7a41a13feaa51ae5d326d6c64d26dfe86ad4ebfae055283aadb9f4efcb7fcb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731680816.
我从来不存在（《蜀山战纪 第四季》电视剧片尾曲） - 玉无心版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168c40021195ce2bfecf68379db20ef0af48aa5f1c5766862fb7cc8f40e7ce6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG731680824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3000da142c73b32af083b216df2ce7b3d40c00702314e03fd7ac9c8f83fd999. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR10S1985697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07742568f9ba4742741722b9aedd3afce062cb7909c9b006a47260df2931e92e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S1985698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36ccfba29efba2c075c12f238e74abe337bb14f22476e0b0ebe14068a8d4d43. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S1985699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a06c285b45f1919e70b2c4c6e7b15d670acd26037e6906ab9f3bfe0d79d011. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S1985700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15255247597b45593f9b907c331a41b40d235f83e8ba84ad6e5e8ca041f1d988. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR10S1985701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a515fd5b8f1c5b3f3ed758e4bbe534498d096d0accb7f3ad272a07c7408d0e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S1985702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fa6369e35f7b6c8ba704c9e6548f279f1d8e9efc0d58662abd2f0fe5c2af8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S1985704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4b1e1fc564a18c38828804f8ca37ef6c31abe89e908b59f80a09d7ec2337aa. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FR10S1985707.
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