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 0xfbab112a0c8dc65d257ed00fb4aba2e1b93355cf9dfec95d6eb012493fe3cc4a. 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/d0f724fe-c90e-48dd-852a-8212cd6c02a4.json and https://artists.proofprofile.net/proofs/artist/d0f724fe-c90e-48dd-852a-8212cd6c02a4.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 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 0x79f7c5b295be1a6409607aee37029fb81f52ebc39866ad8a9eba688b3bb5e470. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TWU712202463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ee022bcb12741706f7a9e23f7010988c774ecebb8123977ce1d5cd67ceeb7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWU712202464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe850755ee948dc1a50009e6436d620ca647d3c9031c231aeca391466b29dac. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TWU712202465.
小事 - 影视剧《姻缘大人请留步》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b15f36b9c21d062df89c846944c7c27e1b83c358f78cbbb1e2cc9959d3dad3. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR2X42253527.
元气满满 - 影视剧《姻缘大人请留步》片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1dd98814527b019cb6685edc83d9161417847f0ef5f73219eee483d53153e9. 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/FR2X42253528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6da4fdb42a94d9164e7fde8c5b99376268225d86a7f2ffc7cd8b2af8bc462. 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/FR2X42253529.
姻缘成茧 - 影视剧《姻缘大人请留步》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a7a35c08b19c29aeb6574bd16e73321fc3f46041e583973079002bdc811984. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR2X42253530.
初见的你 - 影视剧《姻缘大人请留步》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7648270597c9d98e92855826553b069ab8c39a11c37cf737f0d700f54cf995. 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/FR2X42253531.
千落赋 (动画《少年歌行互动版》司空千落人物主题曲)
千落赋 - 动画《少年歌行互动版》司空千落人物主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f40e64d4ee403b9d4bf4156533875a0683b2e751d11353d3eebb6d3c3cc4847. 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/FRX282119934.
世間萬物不及你 (影視劇《瀟灑佳人淡淡妝》插曲)
像我一样 (电视剧《青春创业手册》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8362b1cf394c2fcc5f674ba575b2ef438be2ebccb31705d386fc7663a8e2b6e4. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TWU712005533.
小心翼翼 (网剧《omg，爱豆今天超凶的》插曲)
無名的遠方 (《流行金曲排行榜》助力冬奥主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f472aadd47fac332a923e0f9f45e6f21a9d00897a27c9c54f9207e88b5d3c9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TWU712201203.
小时光 - 影视剧《你是我最甜蜜的心事》插曲
影视剧《你是我最甜蜜的心事》 原声带
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d5b9b4a74efd114ee4ee32560c5e34ae280ab4d38c155aefef04f45a4c15a0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRS182125048.
龙日一，你死定了 第一季网剧原声碟
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde662fa68f6db41791344cc3e6b2918c5366d803813402229d7feae5e048db9. 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/QSR312018896.