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 0xee64e1aff5d84830b47829948142d4ff58fc40235e9c6da521d6b661e65a0e0e. 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/65b0f930-73c7-4889-9048-d154dff8c90e.json and https://artists.proofprofile.net/proofs/artist/65b0f930-73c7-4889-9048-d154dff8c90e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
來不及說再見（影視劇《突然降臨的楚先生》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 0x9e807bc035021893f60f86c79e39f04373c2549719aae16224e949aa254b2001. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TWCT52331330.
來不及說再見（影視劇《突然降臨的楚先生》插曲） - 和聲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22513be5b805ebf7c8eb891e46d2485ad9bfdf23d763d76a53699898591e7932. 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/TWCT52331333.
來不及說再見（影視劇《突然降臨的楚先生》插曲） - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77889b1120c1079a5b73c53e0acb1c1ab8a87756883af74548923df75d1e01db. 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/TWCT52331335.
醒來發現你不在(電影《平行青春的我們》中文主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8d34d4bd4bf2c05c8c93c7f401f719a6dac09d39efb8f6951e3a4642faa58. 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/TWCT52539457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9029ecf5c8c56af441fddb981903e85071d211ffff5526a2fb6cbfc47af2927. 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/TWCT52438597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15eec381a294f13847466bd36e1f8e18146b76c9b885d54ed24b658c1842cb3. 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/TWCT52322490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507ec3f6a6125c87aa7301074edaaa9a30eaef064d99a6aebcf6f9521f7e716f. 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/TWCT52331346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b888adabd096cce133762fd6b50ba5d61f39601c46de25fad4eb503fd2e551. 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/TWCT52434629.
自由(騰訊動漫劇《眷思量第2季之風煙迭起》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83be60f26603a1e5f7761485237085176dc155c664daa3baace8e9551dfbc6d. 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/TWCT52435657.
自由(騰訊動漫劇《眷思量第2季之風煙迭起》插曲) - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2358727434d088231a9f5bd4a618275dcb9ad3566f3dc08670b0e98d64551be6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TWCT52435658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c199ba1c498e00ce8bac0c2b946998da134dbdcc05db1c753688df295fdd712. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCT52435210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859725a2ee194d99df84aff7c3df785b0fef4b75e03aad23afa8c4eb760e2db. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWCT52435211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b888adabd096cce133762fd6b50ba5d61f39601c46de25fad4eb503fd2e551. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWCT52434629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8b85ee08ecdf4a720aed9091475feb00a1d3535e576ce0b0b6020588dd182c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCT52434045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b458241b72c95b3d108200e9fefc89249eb0d8a218714d463eeed3481e77e1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TWCT52434046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507ec3f6a6125c87aa7301074edaaa9a30eaef064d99a6aebcf6f9521f7e716f. 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/TWCT52331346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15eec381a294f13847466bd36e1f8e18146b76c9b885d54ed24b658c1842cb3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCT52322490.
我愛故我在（2023小樹傳愛協會年度公益主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f97f9ee6e468041e9672b27073767dcad91e44d5456caedac62e016b89220a. 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/TWS412300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1cea39200df51ccf0d3985d0cfa60c76e2027bbfeb7a7bfd7eb7f6b077a00. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TWD252050239.