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 0xbe7f51f61f3eacbc1f692258b533a8ba6252c90e252e9f74b1186bc52e298e85. 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/3afc5a74-e118-42bb-8c9e-9e38f9c11491.json and https://artists.proofprofile.net/proofs/artist/3afc5a74-e118-42bb-8c9e-9e38f9c11491.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 0x5cf997fe5dc6d6a9122604114973870dffae77bdbe05e246374b5fba0dcb9f33. 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/TWU712205404.
國王與騎士 (電視劇《點燃我, 溫暖你》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa1877e775ec1dba1ceb240bad80b2c2db7d3b4f031304a13e5fc36e12247d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWU712205480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14f8f5637d85f89a90088629ea6d832a85060c6b5bb1d0a448b76814bae2a04. 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/TWU712205481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057697d57b77b99ad5641ba54782b070372448ba4703974c3b9d8b6b69e1f3bd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TWU712205479.
戀愛循環 (電視劇《點燃我, 溫暖你》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6544efa23ab58a0aef7fe2eff5f8e327f40bda7870a8637ac75c14b5f56a9b8a. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TWU712205482.
輕紅 (電視劇《點燃我, 溫暖你》劇情版插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1efbda88a00879369dcbfebd7bd6e1bf2dcb99006493310ce23f4056029663. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/TWU712205483.
輕紅 (電視劇《點燃我, 溫暖你》燃情版插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486ccf62ad64a1013cdfc45e3ececed422fc07cd27207d1676b1e52a30ee8dca. 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/TWU712205484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42d62d8913ef56cbb7582fe43360b8589425451134a01ab1e682d51d69cc65. 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/TWU712205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8020ae6abe9a0eab5cbd0af2e0c1810fb24c834e491777c2d04585fc48d847. 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/CNZ842200318.
有你在身旁 (影視劇《燦爛的轉身》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4badbbb134fcbd39ba732127840bea5876df75358daf42f550f5d3ef5790b3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CNZ842200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8020ae6abe9a0eab5cbd0af2e0c1810fb24c834e491777c2d04585fc48d847. 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/CNZ842200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf805a715e3336a7fedf704fcbacad893e49cace8b7cd3bc274ddf9d9c6a8e9. 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/CNZ842200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9109166f61990819733099f9dfdd067f57ff4435448cc1a0ea9182c9e21271. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CNZ842200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a275ebbee9c1061c25fa0e2c84931e1de9de0e6620f844d87dfbff62ac73fe. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CNZ842200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a69168a1b80bc2524d22b07fc95ead1b351258fb2dbff263c4cbfc00a191df8. 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/CNZ842200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0074aee74aa20d72a43d5f89894165303a2af7edd42cb0a94eacf2a37637c89. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CNZ842200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c46f5821fd347c5225350f5ff8f87983107968f91bc79df1197c1706de113b. 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/TWAE32300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaea937ba67016b70583072fbf9390cb0fd968e9ef2c1369a62268b7f9b98db. 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/TWAE32300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91395fdc1821fd005e2e54dd3bb202a2ea30f9db0d8821889b01a5dcaae194d5. 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/TWAE32300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f196f306050e4c224088dcd76053b6e96748b636d454c465a08aac63b484f. 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/TWAE32300471.