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 0xeb0d2019306a1efaa03946ead01b2818fccf7b817d5375d02ab97ef41fe52b36. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/329f54fc-09d0-498a-b948-62148a80dda9.json and https://artists.proofprofile.net/proofs/artist/329f54fc-09d0-498a-b948-62148a80dda9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
親愛的！飯後想來點什麼？ (VBL系列《保留席位》片頭曲)
親愛的！飯後想來點什麼？（VBL系列《保留席位》片頭曲）
趁熱吃，麵都快要涼了 (VBL系列《保留席位》片尾曲)
趁熱吃，麵都快要涼了（VBL系列《保留席位》片尾曲）
很久不等於恆久 (VBL系列《恆久定律》片尾曲)
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 0xbad91da68307c80613b89a12db7c754441870b0ada226ee546579e0d9dc0c24f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWCC32400614.
很久不等於恆久（VBL系列《恆久定律》片尾曲）
最美好的存在（《關於未知的我們》插曲）
最美好的存在 (《關於未知的我們》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380a173b562997ffc86d9eeec9b43fb8f0b19dba40a951228bf80e0d1dd38ee6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWCC32310184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff75190a12e7bf8b2fd7dc4fdea973cc5662a585378962f8eccf5da0206c0d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TWU712409629.
趁熱吃, 麵都快要涼了 (VBL系列《保留席位》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064d20c0914682591d771f4237a109774574ba8eb891d902b50d9bbd56c72200. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TWCC32321513.
親愛的! 飯後想來點什麼? (VBL系列《保留席位》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3741845a2e40b9b565454a99fa4b6109895c17bff3a39cf9cb11cb1693dda7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWCC32321512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad91da68307c80613b89a12db7c754441870b0ada226ee546579e0d9dc0c24f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWCC32400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7c83fd5339b7472ebe0292909180038f6f9afa4adb852e2a91e3f4d7a6ed4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWCC32400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb2c865ac52020a7b6e66745018fa3b6f71329887d3b345d51b66f058f0a52c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TWCC32319187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498dffa67be901b707d9049c15e1b4a0a6869c197e9bdeef1209b890993c582. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TWCC32400617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da47a1e659a8a76030eb96bbd89260709840fbe45f0c4c45534a540a21a1690. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TWA452500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15698f153084e93fc6f0b641e47886185d5032f54904bf7f6f52b545d35b5eee. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TWA452500023.