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 0x58d2298ce6a49dce2b850b8a8bbd9b31ea6bcfe34936d15c5fd7d164fd72c5e9. 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/45a2a957-8026-4222-a4fa-b0de77700fd0.json and https://artists.proofprofile.net/proofs/artist/45a2a957-8026-4222-a4fa-b0de77700fd0.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 0x924917c890193cab13d5c278b0be48eb43b087a2d9784c574239fee5e2828db8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:42Z), 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/HKG732040434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceec10f740b9b32144f5c98f366606a18a2d61553b9bc00df21696dc3c8a9f3c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKG732040383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5003f69238a64b1f30e02638d3b7813581027536179b73f05da779736debe7. 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/FRX762184231.
SNAKE EYES (电影《特种部队：蛇眼起源》中国地区推广曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8d8426db36f4c53715c12af056e54ea476d403dec2e0740e3cb2d5ae3b42ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX762183931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc797298e0c9add6e7692bde8ecce4a92abfd453dd663d5fb8817719fcf0499. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FRX762183933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d922a153f0dd06b7d715cdf348958b21a2a7450d54c445a007e4e55ee99649. 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/HKG731713450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbc0495301e83cd80bc7300905b79ea7beb52c99ab12139ffd31cf02c4e4bd8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282204238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0eafd590c2f880bed1ba16a34b6deb2d9f75ce7e641f840fe97896588440be. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/FRX452449736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a6b9831a24fb943c45153eae4441311c184724c7f90402f8f6bce8aff78c9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TWAE32403319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db014e270f77ac06ef3748741577747e42171d3d7c2b281a2467fcb79206641. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TWAE32403320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedfba5bb564e2b2ce63ac753a1ad556a0bd3570872affe1c7dbdc86ba93db2d. 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/TWAE32403321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ed2d40b10bc56fcdc98216bcd73e3ee28e86325a2ffef0944b8c94a396cdc2. 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/TWAE32403327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d431fa5a6a87c6bf5e1070c3830e3e730004b086bb7d7da5dd311273a3ef1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:27Z), 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/TWAE32403328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb760c435555525d7a54c8748fff57f8cca3ace5f29439bfa1923170efccf52a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CN2DY2503252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f285d16e6a72d3062c1199cc2d55b513eda792840579b9fafac08792077892. 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/FRX872145396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710966e35684fe44b60a5105d79ca29ee5c46fa9b3d5a04502b15c8a647650d8. 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/FRS182160991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4a14fd5668b04373243d1d82a880f5a82c1f1c5e591f5070d748fae0c22ae3. 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/CNZ782001900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3156f5a6e060d65a910d307271a49d6adb72481fde85bd7d4596bf2b4e631ded. 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/DGA062236712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f92a1c705974b1faf02185820af2cb9bdc98df7ff46352ae9790a0cb2acf82c. 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/FR10S2201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60a84ab9c8c4fb1ee96cb9a23e90b13d30d0725b4a43c57efc431f587b17f48. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:08:11Z), 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/CNA132400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64245ac39dfcd7157f43dded367cfc539087f2e6ccb642accb04f76b642c00d5. 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/HKG731672451.
Shang-Chi and The Legend of The Ten Rings: The Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93542ea83a80709b0cdc752dc659fbb31a3fe83880d5bffe1613e5c7f59baa1. 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/USUM72113058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b8cbd69463714d3a47f18fba436a0e93cc8f88297f8faf0355a1cf86a802ad. 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/DGA052309629.