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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3644332422b8790724f93fcf38aac04baab077015df974d19292beca7e2efa9. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e994c5ef-1cf2-4f51-89d4-e22c5f332882.json and https://artists.proofprofile.net/proofs/artist/e994c5ef-1cf2-4f51-89d4-e22c5f332882.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
网剧《龙日一，你死定了》第一季原声碟
不能失去你(《奈何BOSS要娶我》网络剧插曲)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4779480bd7ded638e6180f571887feaf1b8aea4ae4188133f924920b7783876. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703530 — a six-check JSON result.
一切都会好起来的(《奈何BOSS要娶我》网络剧插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096303237ff2f121b25db2d1b5aa60c71e76d41db90a11956c19cd8aee713c9d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703529 — a six-check JSON result.
一切都会好起来的(《奈何BOSS要娶我》网络剧插曲) - 和声伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009989c44495c672c7cb78e7e2ac31c17081f8b852fe67118fe542599052c1ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732295686 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1a3dfced8978a5d5432077b8d4fc16bdcf316b45881c1a862523574df7a1cb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703526 — a six-check JSON result.
我还是很喜欢你(《奈何boss要娶我》网络剧主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d490fab7437c01c2bea6fad5b83221119f91e71907acec77ed492b5a0c4ef1e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703525 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4309290441ba736a0b0c199bf05642ff295dc58f1ac5967f003a448a03ae8121. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703527 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27589c69079bf01b0d0f52706843c3748678b6ae13feb0dfe4b0ed3fbb316259. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL71703528 — a six-check JSON result.
我可以（《楼下女友请签收》影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bea50a2ddb636727891857d77ddd2f055c1fe5db4e02336015c2092549a2e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009032 — a six-check JSON result.
小姐姐（《楼下女友请签收》影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cf8413e67202c8e6cda30e2de52af1158a7c1105d49061c63eb94776043662. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009033 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fbcd57e9a65205ea20a550d413fc6f126904ffc20a2cb14d04ee7ce1500c94. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732296791 — a six-check JSON result.
变了模样（《楼下女友请签收》影视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9651f0ce7497e3aeb56ef3ee20e911aaaf72c5cb8071728241dec7f734b5816. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732296792 — a six-check JSON result.
不完美主义（《楼下女友请签收》影视剧片头曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949fdb7077001627539a6059cc0a05de8c22f7eb0440ed64b9da3afb44ca2a04. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009030 — a six-check JSON result.
离开后（《楼下女友请签收》影视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521714dc9e831e1cae4c5ce87d3f0973ab578781e408f4ac7eb3ed5cdd5344d2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732296793 — a six-check JSON result.
麦田（《楼下女友请签收》影视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6882efd26c6860bb3defbb99e21e2e822a1e6cfd2e52d41e712f01b2cd6294e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009031 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a072bc4573c26a540a1f076c99923533e9f1e1b5031dcaa7b485c10b2c03534. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009256 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f2638537b38c0db3ead3eecb79789940f040c429b9d89bfb89153ae0e5a5e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009259 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ad21b50ed7a5ddded42720cd60dca0412beabfa6c959758dfec422530f5508. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009257 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7369dd24267e973ea302d0df1c3cd9ed7e77b65115de6b84c19f8ac27848fc06. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009258 — a six-check JSON result.
长时间分手(《奈何BOSS要娶我2》网络剧插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9f9b0f4ff3dff7bc9e67967d0a97a93de0f7cb51d5cfd80fb100707c51e0be. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009261 — a six-check JSON result.
长时间分手(《奈何BOSS要娶我2》网络剧宣传曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd39fd0d980bc707488914237d430d88331f669e3e978e7f153a67ca0270056. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72009255 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6d9ec6aed818eaee061d96aeedc128d0b6d25eb3cfe4cc934e741897b578c4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732295108 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eae6d9e1d314d974d50a15598c09f2203b41d978acf5aa44b1ce4369983b3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732295109 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b304cb5ba62f60e21fb36fb0ec7c06c1c6f606ba6d43d666d63c9bd3a89566. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732295111 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303be7c196fe6dacc3be90a76d40ac8df0df08e8f251076a98f08f769cf3ded. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732295415 — a six-check JSON result.