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 0xa27d689a10a8598168a3fa6c605c47cfad26c0f3f2e8e4ef03832e59fc8ceb87. 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/89be0ddb-2978-4488-8671-12819b60a903.json and https://artists.proofprofile.net/proofs/artist/89be0ddb-2978-4488-8671-12819b60a903.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 0x1faea356cff145474b33b14db72f283518b466f06ed0804f54a2174ab1ab7466. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TWA459401605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e36cb7599e1cfe7036cb7907c760bef7c01ba05df2371f34d567b2e86e7232. 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/TWA459401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240edadc423f6b9e044af10fbf1cb87dedf638d0c99c008bb6cdd65a63b5c12c. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TWA459401613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe56580d43c7c870a11dd71346c5478c93db4d5f814238293ed49d8c70dde9e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/HKUM71600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c6286327f3f4087f00ab01483a777ae2cf0145ce0708fca9f979ff3456346. 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/HKUM71600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ab2e19d87f86ab4fa3904ea474f2e707bdca5d65dc4d070efff5dfe96b4f1a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/HKUM71600141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79aed8a5b98cf8af9fe89d13870b101f41e25fc39b7e2497a2c68832911b38f. 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/HKUM71600142.
繁花 The Original Music & Soundtrack of Blossoms Shanghai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f94295386e98956691be19257642be3e88820a5b7b9064eb75664a80adbb06. 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/HKUM72400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2012eccd36ba9da0297e9eddeb4a6a4fb3db1fc62571810ec7111b0746e53. 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/HKUM72400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd090600ea65d1eac255fb86f7ce38281de8ac6ccaca090a262e12b76727d92. 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/HKUM72400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c044e262507b2b6e131dcf8af34957d6a56dfc0977e364532dc994ef36dd19. 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/HKUM72400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6572ae2a0136a315061508f6081a3b8088f738e2feb209c702f31393fc9e54d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/HKUM72400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc14d1db1423bbd2f1476ebb50bcdf029e3ee50a0d8b37b2709a479887b90679. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKUM72400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb1c8876d7f013fd523f0a18b1b17c8bdbeef5726509cd54598211e0ef27a69. 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/HKUM72400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ea4b49104814a96c68ce4f80318b12e4c6e10dcbdfe7b56a148e96fe93109. 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/HKUM72400093.