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 0x6011170615306403a7a9999700f5f9443be33cb05d45402f0e1ef91672d53c0d. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05fd7fb5-809b-4fd5-8728-2fa61a308241.json and https://artists.proofprofile.net/proofs/artist/05fd7fb5-809b-4fd5-8728-2fa61a308241.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 0x22cdb9339e4c2f5e93fe63f21bd6d202856422f945945a0ca20775fcd527c7ec. 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/CNZ632301586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0e2a55d39212f133ab87f858c6dada344f47ef53bab70b22f599ced32ce06. 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/CNZ632301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281966d262b5dcaa4feb0c72760b73de0a8dcbd55ce878b0eee2d3a4edabe9fd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732220795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790416025f15201bde35ba4e3e78d38d951bf594fff3a129224a223e74fd27e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR26V2028490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35bef869e8e8477e7b5eaee8237b169ed78aa98d7d6535749a1dccec1fd8a0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR26V2028491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030ef617df71b980e45fd75aebacf5d2c4858646489b99524372324f194ebc3c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR26V2028492.
方向感 (电视剧《你是我的答案》浪漫主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eca0437ef7b09fc3768ea108704b4908771612e5cfc66b7e8e56ac050fa748. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKG732235606.
让世界领教我的名字 - 网剧《同学两亿岁》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6404d4f7a33a65ffb0b4132b0a12e4a3f7165e2586136ff573e053b1a5e5e031. 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/TWCT51717794.
最想保存的回忆 - 网剧《同学两亿岁》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad405d1136318920a3184f31db0c29e9fa37644596bc774688ffce0f392bd355. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWCT51717797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fde66ea40cca808337b87ad6e4d5b809edb9f5311964e5fc9145025b72318d. 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/HKG732236442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3eb43cbca972a230c518639b1beef693a52a1f56ce3c3057c5d79a019cb7a0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732236444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8608a2b4c240643b861a5a1769cb93f1cb07f4cbb7b2e6b1dd0bb4fe73d04bd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732236447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f349b248fa142b224e182f6234eb7da59edde4c2f90a771776758aaccf00120. 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/HKG732236449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf231baa64b8b908c53900e52222a9be8dd13d5d86b5823ef59977bf7d9b0c88. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG731619937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08fd4368eda4cb88e15069df24a3c4b09a3284383d7d89e2df2b8a16c4c61dd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732235880.