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 0xf5dee49ae6fa482498847caebcf282ed7f90ed8e7602da6e8a2427311ee2418e. 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/8d69ec82-f3b7-40fd-a50f-8a3eec4ef2f7.json and https://artists.proofprofile.net/proofs/artist/8d69ec82-f3b7-40fd-a50f-8a3eec4ef2f7.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 0x4d6db0325e89844419774ed42c8a8daf97a7de89b3d91fbe4e6ac67c460eacc7. 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/FR10S2479124.
夏洛特烦恼 (电影《夏洛特烦恼》主题曲)
下一站我是你的依靠 (電視劇《我愛男保姆》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb286d41885e64e1168f6b0fc414672e1249c1fcf844561e9860c8e74698371. 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/HKG731713479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb87ec45adc830eac5f72168e21f691b87b6a5ec98aba91d0a23102f024d15d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKG731713480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b02b649618f9120b27f0e2ba5153c39ab601c08caa7c112bcf53695abbb92f. 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/HKG731713481.
不散场（《为了你我愿意热爱整个世界》影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38522dafa3bb44a4eba7d05901a68930203e3852b897f2680504a77ffc5427. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/HKG731535103.
今夕共西溪（《今夕共西溪》男声版主题曲）
守护（影视剧《爱上特种兵》片头主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec800e2d6b51c4f2b52d854df59df7646ea639b32791ecd8cfe009cae5d0830b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/HKG732134151.
留白是表白 (電視劇《與君初相識》片頭曲)
就給我一個擁抱 (電視劇《關於唐醫生的一切》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353d8509372221425c926406ae917be874d53ea20a90673b62db82f05ab3969. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CNZ842200105.
月亮不走我得走 ("獨行月球" 電影片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f014839d0afd1eb7e5d2d8b7969b86ac7e0e7a18bfb639ef934b3525b8ae1e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TWU712204552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cf126222b6fafd9c9c8fa361dabac8f4df254a6fde6b07dccebfab0dc40f53. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TWU712300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f9bec425ca1b7ace50f976222ac286d6efa6538d6b8168b725204612252c1c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:59Z), 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/SE57V2326703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d1065b33e1ce4eabd6474be045efe2c8873261aed3604cab25205876b6043. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:16Z), 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/CNUM72300279.
对昨天说再见 (腾讯新闻2023-2024跨年主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa5fa6fa224f07fe5bdce71128eb3937e4e9d37b88b61635f6ccade4f0a309. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:39Z), 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/FR59R2564884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63170b6e24c04867c12aafe29ecf9f4e495ee5e30158c28dc04d17b658e42e68. 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/HKG731764060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cf126222b6fafd9c9c8fa361dabac8f4df254a6fde6b07dccebfab0dc40f53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWU712300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef0b73d3026a376fcb6faa10cc15a99b533e328b170d07d53634029289723b. 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/HKG732280544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c5c4a07dbbfd23a4f48ee7413a8351e2366185a6d2ba76f0bf82a31ac4c786. 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/TWDL72010823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cc771a73a531f2c22d8224b207ddd157fb02214eab7bbafeaf4a9208618e34. 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/HKG732124867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36aa716d2b095ff67a0cc6fc8ee6fa8758f55077db9c5b587185960c4a620c2. 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/HKG731670483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee80f3b554eaa348060e9fdff31b3233e68f8955afe6a6b6998b0d443f974de. 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/TWDK52305010.