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 0x1ea35c90d9051cced25dafb9c75af2708ae018bc957e506999794cb7fc0d4c7e. 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/cd460b99-a11a-440b-abfa-80008baadf63.json and https://artists.proofprofile.net/proofs/artist/cd460b99-a11a-440b-abfa-80008baadf63.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 0xbc8aec9f463c83be44c0857ea4b11ad6129d624031dd55cbd04b729b80d9e7b8. 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/DGA052316002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92152e56d9979da6b31c2d571f7a5c44d8d1209c0dd4628467f3798caf5ccf. 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/FRX452430910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d7539dd06140986360505dc918ff48920a7d1748f0a32e0c8e5840a483699f. 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/FRX452338538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e785cb2874b60a432f61be740654d3f9d7e5cac6bbae2f84716ef48464967. 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/TWAE31901656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1561ae6ec2d066b3ec761dba301e851e0642895d2d5221aca55097e031983858. 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/TWAE31901657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6648ec69c05e54cfd4c56775b9a0bc50ab9c2f80d12f1c0e922778713710308. 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/TWAE31901659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a853cdcf955df7a54507266e5223ff1520c3db8c0b6c49de9313d303037ce8. 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/TWAE31901661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d18ebfc52d183ac2aadebf8d2d847dfa9831961ddb3fb13cdd1cffa6c6d9cd. 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/TWAE31901662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaa72fcfd8725f20c12fe666291545fb548486ef90df7a416e6cdc65b491f41. 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/TWAE31901663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58879d8f9c337fd97c1f8a1a38c0f8af9dd0a1f9573adf87f15b351843c7158. 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/TWAE31901665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f8fb41f04483f8f95dd136e787df66e758989793b4029474b5e0bfb6a6d31b. 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/TWAE31901666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbd0eab79c632020a1ef99c80f2646dd8164fd8c7c8bd635d2a62a03dc90122. 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/DGA092439719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107e854936b5cb1dc981547673842eaa44a75ec246d6c4f0d3d242b9b5ec8f7f. 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/FRX872430874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6cd949927c5cd1512fafc4b58e25da9f8f93240c3eaf0fd1f808ec08411cc. 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/TWCT52434480.
寻（仙剑六影视剧《祈今朝》寻爱主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e0ca1b09b029d7d9cb05f8844fc60a0fcd087a07538a97e20ec0a5891f35b7. 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/HKG731683765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6923a9a135e031c912ac2c7f20e3e2f13c3f86840947cb4a5f656ffd405ce6db. 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/FR10S2404130.
體會 (電視劇《無與倫比的美麗》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8aec9f463c83be44c0857ea4b11ad6129d624031dd55cbd04b729b80d9e7b8. 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/DGA052316002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeadb641cf838ed0e8476b8b33bc68af07b5c1e39253d8101162cd40c77ec85e. 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/DGA082279344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24855ce6f6050c2d508423fd67bc3d5ed07097c35ecac666e46de4f50e644c61. 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/HKG732294036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82dc83779317e99cb7f6257e6c1a17f9a5664d7b466e78c328cda8da4272dd. 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/CNZ632201278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d4bdde648b0ae2dee0363076f4c7e444be3045a9e684fad6b999b1311a36b2. 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/FRX282221192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2940c23a7c1ac8beef8ad60ff4a81deaab57015b3fcce84309ba82d8f9d8b1. 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/HKG732142368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829b403c52e8de4637d6dcc73ea8ea8e0f4ab9032341947c7b348fd1088adef0. 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/FR96X2183962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedaaef716d1ea65dadaf60ffc3570bb522785d4d6ea72db99c8915a833c6268. 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/HKG732017774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083240b9223fcdf9bf56b8cff97738696e1016f7512eccd31e309a79b20e7418. 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/HKG732328274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134330f61d026ef26a4b939e6981379c867cc8de7041eebcac14de0fdfe43ade. 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/FR10S2241109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f086f552bfcfe86c6afcc70ed7e2f8db806e1b1566e72e47cec4a39b05366e. 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/FR10S2240730.
最好的朋友在身邊 (電影《愛情公寓》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99d2d262dfd69a69daeb1d508314823fb878bf7953df11e4c8a214cd72251a. 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/FR10S2240835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7f8c45cd0c9860c988625e17ff009147f6100b75e1e66d9ba2f0693ef3647f. 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/CNZ782001897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217b072fc3b2ed6d2d51dfaf8c09cfe15cbbc6c885c860d330ad378395c53fa9. 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/HKG731613103.