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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c837d74ed84b93d8abe3098279735d661ec148d182592258ee9f2b25248282. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09f7764c-a17d-4059-b281-aa3fbdc5834a.json and https://artists.proofprofile.net/proofs/artist/09f7764c-a17d-4059-b281-aa3fbdc5834a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9d837bb14f7b633d42a59531b759c55150a5a4e67b048a8f07be76472fff2. 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/HKC371653327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae5eda28836ef18f800f938b7f32b2f491bbe15cc041aa2e2cb9d5d25219dc0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/HKJ342350006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e8f05cee056b319ba7ee4109681ee27bcc1b8b79f2773d28a38aa0036df016. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HKJ342300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc33dde13a740ab467c72e8b5229b516e650724760a186bf609479014261485. 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/FR96X2305383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff99f195bed11b2cf923d59eb77cd1a2cd7023c094c1c75ea5b00bd3657b208d. 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/FR96X2352225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4c7f147a62ce7e575540a9a4d6910a965c64264d2e1a3c013d93e0a1715f1b. 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/FR96X2369212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac90983e4bab3cd7467521bfe68109e7c2b926775ae63d2be9bc215921efe54e. 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/FR96X2352216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbcdab383aaf169172da2977e88784ee36ae5f93bb220a55222bc8c28792ae1. 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/FR96X2326371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad549fb14efbff82e47781593da78569e80078c7c68291818ebe7b500016bb. 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/FR59R2386536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38a76575554205047cefb94f88d0f7e1d16ccd86a6b290e0fccfbd44f6d4da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2388094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa0188c0db490399dcbca505d793eb9f3805dd4513f0247b39135090b9e046. 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/FR96X2304252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cc1d82fc6756b80ef1c20a128b96e92996c6ed45c2789a298f7f46b7d3a3ae. 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/FR96X2304253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb0923d634a896608a4409e3d2f496f944c8c20cec6210927be6f32358b79f9. 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/FR96X2334392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c525e89b930e420bc7b791a3060d92d112d92564da99eb5da66f7d63917864a. 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/TWU712500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836a3430c95ea4fc83d546784dc0861633d2ce26da219d2a3d30861ed1b19db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKJ342180013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07a59f57dc55131f40a19985babd3f0befe645f994798794703e2b75768f091. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKJ342150017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826efa04c7ca9aff1cc5e312318498cb1669fb4f8fdba8e4385ad59c24f33d8b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:38Z), 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/HKUM72300043.
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
明月 (電視劇《錦囊妙錄》主題曲) [伴奏版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54abc9c0381f7a92980dc30e893e70d42067902ffa60f3c471897aa2a8a12c0. 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/TWU712500273.