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 0xf89c38aed58058cf79271f32e78b28ce0db81ee2015312e189eeed218b643bd5. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d44f8539-3aec-407f-bcff-d3e756326e52.json and https://artists.proofprofile.net/proofs/artist/d44f8539-3aec-407f-bcff-d3e756326e52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
一片冰心在玉壶 电视剧影视原声带
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 0x3bee7c4a1005487ddeb25a93dc1de4d66846b681358258d1dafaf7b524d458af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731623327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150c05f2cd94cbd5ed76f902a27328709c6454920b9278dd4eca23ee15d40c06. 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/TWU712302427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c083082944874b3ade932a6df17946f08b13773f424602d24aff7a04fa63f2f. 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/TWU712302425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e7aae6424d4420f6e654d6201c9adcd62c273113879531cf8d60c3977b8e7. 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/TWU712302465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07cecce0fae7c1d2a84b5dfdb740132e6053cac9e3adbb1626a426779b1aaa9. 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/TWU712302509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2d57196f7e5cbf8599be98b23f8184a5e9fbd564283f8d85c6b2edab86fd8a. 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/TWU712302510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123c6ff199240c465eae00150af5f1ab3dddb2131a048922ef507b78f34d63a1. 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/TWU712302464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9e0f2755875e7d120ba03989b67fde2059f40492ea7a3a6173e1ff50ce9ba6. 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/TWU712302511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb66ced81aa6353f02473ed0b5a9131d804b2761928eb9e25704f6da6281a6. 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/TWU712302512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c74755eb667ca97ab65e9b8c68b134f5ea703acb49702af544c8b53608c5245. 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/TWU712302513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf461dedd270d7dee8caf1709ad6215a04dad2b1cef948201305666fda219dd. 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/TWU712302514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630f92706726885792b97192ad84871abf5c19cd40021ff79e3a7fe07fbdd725. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWU712302515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aab47f7e3a5089f74a60a280433d9ae82c0318dbe086ceea0bcc81ec7d5a6a5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWU712302517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08651733538dcf23743fa3656701990ced35e50330165e61bd73bd76f473d4aa. 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/TWU712302518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126199435ace7db5a250a21e07c21eda3b9db389c9ae333c3f4a28cfbe5a3b2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWU712302519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4b43029094e14e882d95ac0802552785d1ea9720e14f5ca85273e5fd087fb. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TWU712302520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a559b1c688ad46c0b7884b6f3ea032c5c0b2ed38c8ed7134f94c3005f48ae5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWU712302521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedf341065a8d4fe6dbc3953f989fffa8d205208bc2ef85434b1e61bdd0a9566. 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/TWU712302522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d455259cd5549579c0cf112c4d213888289c64371c9b99d2694b2dfee588ecc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWU712302525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb33b6336af7b0e8f0b74c529478ce58ddb70b1a0ba00670d1f9e77d728e5cdc. 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/TWU712302527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88877f84c4337d0ec199e14aababdae58ff1c07b2e3d8eae0c869cc9108d383. 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/TWU712302533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaa1cf9209f5c89b21d9a2812cede208c5572510413ea70a86a3f4a9e0a7769. 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/TWU712302534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e5071bb930e76ef3740c1b4011c5cf0fe103eebfea7deb808ee147524ec4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWU712302537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7ae1293319908f50cf90ed6f36768eb79997445eb67d244258b0cc9a4663e9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWU712302539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8be6aae6415b7911356621f3cac159179c8d6a4a05cdd6ce8b701f81f282a7. 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/TWU712302540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b27fc9b747281b89824808d12e0560cc7a50df6b592921195045082255b050. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731624054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7105e5156a3f95ab826b4cb651ab2df1af9bd863d060a3a9fefbba7e5920a. 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/HKG731619889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4605d30e8933506a0ff55ede9418954d1cb3e6bee64ee65e4d4a0829abf55e0. 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/HKG731619891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e6bd598e0e9e368a68615743bceaccde6a56f8081fc107a4c80fd66e96548b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HKG731619890.
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 0x698c6710019f84aa205ede28882b95aa106cd4c923b4cd29b3d9d1bd58a81710. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2497188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04f6ee373c10f88ab6f7805aee7c7247107c46024466dbee8ef34fb93843ae5. 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/QZZ972333889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6336cf3224553fe13bf16467526d0685eb2396b28a84ca4f33037f5289a451. 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/FR2X42417660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45ed7bb4eb5fdad2111df5570542a9a832c10884943dbeb275d59117821ed14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ972326693.