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 0x8c4fb096555e1a095ab4f7868a99535da1f64d0e85697e59116ead5b6e2c8d00. 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/7fc12cc8-fefd-4165-8c8a-ea435b8fb41b.json and https://artists.proofprofile.net/proofs/artist/7fc12cc8-fefd-4165-8c8a-ea435b8fb41b.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 0x568f4cc690814bcf8e78d1f90155269f1e6efa574150fb93f529407668da98b4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/HKC372489386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c68c02b28c63fd8bf77ed27ffcc632dfe90797be774b5aedc9d60f72927f30e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/HKG731515147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e95400b16bfeada6ba44258a7879bee2a0a6120b86a520d8d1cbd35a121164. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2418234.
做自己的光，不需要太亮 (拔音响广播版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c623f10718830f5d49920adda849016dd35a2992ab088dfd39e8a523f05b1c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX452436817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050b5fe3d0b8988fb5705d56cdb02478210c17cc3092e70b1a050933e454b9e. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/DGA062475426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78913885478569e5a6c03b3a8f13bc43dab69aafeecb0e457a7ecb079884f70f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DGA062475430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412c63a8a232e6f239ee3984c0909a8c3cb8082d5c3e1e4354eeb8366200dcd6. 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/DGA072468294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d35808cf80e583bf8a7b7bc63a828c5fafd67457bec1535feeba391f2c787d. 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/KJED58341100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e3ab070ecc03efffe3cd48c7eca43270cbea27e78941c805117505a8bd7b65. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/HKG732414260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e18128affa215041b4236285b07957c5006618772f01bdf9c926f1ea275019e. 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/KJASU8524702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358d192417abc65c946e2adbef08ed67686f75935efa49142d2893ffa5405508. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DGA062479952.
做自己的光，不需要太亮 (DJ九零粤语版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4998259ed86fed8dd310d54aacbaabd90e7e8d5a49a334a00c9c17e2ba5083e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA052453831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045ed9c222a06db58f680daef0cf55bc229f8e6ef539228877f2bcee864b6c13. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DGA092472778.
希望你下次哭是因为太幸福 (粤语版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c76e152b2475b0a5a232eed74d158155994de0fdd0fd89b770fb7b14982b1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA0H2413781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff9f8f5c46c70171137f4f824cfc411bc15fab66e017453a097502651f517a5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DGA0H2410888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751ccd003062ec465aebe1e348ad7ccaf139bd6a6c963df93d27f5cd1a09c66. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/HKD012420555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045efd4f5a1eca17e8cbad7785301f4058e121811249888ece597cca5360cf2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA092413822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb635779a54a51e1e3ec73ca9f4e4454dfa42ad38d1a39aad700263cb7f405ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S2573844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65df74cd988ddf8689b4f82cab5964a015968b5759a7de10391ebd65dd6f5c1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA0T2446354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603709504fae404bc6eae9e8558842506187b5c92437f7522abdb8f21e9636fd. 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/KJFTE5856526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e579882fa9e86ca1cda3d83c3b19598d49f1cb2c7fd9e66653a7527ce4522c. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FR10S2591547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a0e3f2c50b2d450031be9653cc2c83a17e0ebdaf41d6516fd6d17b222ad33. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/KJSPX9931378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74c644f6b1009792b36510001ddc16a8e770178b8d4dab26cca328a3e3b8f4f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KJG0K3393247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e1df812dfdf64b599bd173e7cb6fa166f66dd406c72b25267587d53071ee5c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762558742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fade58fccefee23622230089c9f8efb291fc6837dab7d895b6bc08a19c50fa. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/HKD012492944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2989ba3de32fa7e0180452d1adb8447be2323d81e7e846226818f5daf94efc75. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae30e52c9811e6957995b1758f95f983b713583a85e17ae625314131e97eb4c. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/HKD012493423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612bf0f3b42b1372c1d58c8d312f3864587e8e48416616cc0d3b0ca03d9aabca. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/HKD012479824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef450704e226c4f2eed641d9ed4ca5b90c3b82193db713ee10e14da3f94a51a4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX202594831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c9b40010a75dd0ac956b48e5e84d65b4fb59ee26b6c6d030fe1ac2d3bf93cf. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/KJPP21762958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c457df03e5e8e3e59cd303cd6a965d6b45d25d5311f02514d2223eb73603f55. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKC993125711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ea52b619f8a81ba25d0237b11b61b0b805e7624e5fd7e6f5c56be2597efb75. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX872596041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb0873995ea1b17e75cd79c5bbd72850c79d963079fdc89500db140a1167a97. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA052508269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4788a3e74e19ead1f1339f5481fa075618c3affe28a048c4de5ca101c16742. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/HKD012677894.