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 0x8bd3613b95ae52c33af84f8647bd21ca7690bdbc9c4a22b654d740df323c3f90. 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/8b3df542-e613-4118-a8c1-ab4bc27b7738.json and https://artists.proofprofile.net/proofs/artist/8b3df542-e613-4118-a8c1-ab4bc27b7738.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 0x7afb78a9dab2c7babc2b9cacdef593ad9f45a9c3f67fbd0c864dd46ceeb4306e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:46Z), 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/TWC610605407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d305447c5bbb0c446acfac25d60ec284ab40cb5d7d28ebbc5567fd48bcfe11e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:59:10Z), 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/TWC610605410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665c87c42bcba68b46e81cf3f84c88e59ffcab25f7aad747f9e3523ea98aee7. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:46Z), 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/TWC610705605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55290c353a6c1280a0f4eec6b883f6cf289d56b72a4ce831d65c928d627e5440. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TWC610705608.
科學小飛俠 / 小甜甜 / 無敵鐵金剛 - 現場版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a2132dea0294b62dd00cbe2b69d0ee1299b83c8ed931f09850bf0a69700db9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:49:02Z), 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/TWC610806303.
ラブ・ストーリーは突然に - 現場版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d769adda84c9dfad4907672e4c3c6fc9fee343311913a41c51448488e3323b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:30Z), 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/TWC610806305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf18b1108c6bfcf5be5e0b1388c5ef32f1565cfc49a8279494a21d1c92e560. 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/TWC610806312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac0005461012d0b142e6a19a9bc5b611cec83bb399ed1346c1400653b2e4bf. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TWC610806101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f62d8f08db08182f2631b61435e41dd16229f68775c4cf5bcec76c1728661b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:49:22Z), 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/TWC610806102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e278509e6317d158966399e94f22de316936718a5d6f7c96f704139ffc9cb. 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/TWC610806103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0d0e5de6ae9a252c92148877a5494976414ff94ffc9ac820775437ce2b5e7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TWC610806105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240a80ad7681b41a868bc4ea52009409d07685ef9e91c023dc2a32b05cd1a0a2. 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/TWC610806106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d3a6fd672c96873d1a92c52b4bde21f202724cd0bce54a9fcfdace69cc16e. 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/TWC610806107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13735c75530f0aefe31894b54cc07f0b0f76b90bfe47ff7485c3b535a9c2d7f8. 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/TWC610806108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ee9b49bd716e74b422a6146d6662cd06f1c160c2107fc2e4036737a8c89f3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWC610806109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a3eef6e221bbb15bed226de1d7f8a3adc90e10b68a2f4ebf9187270e8f313. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWC610806110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2860959f19565856a652a7e01acc469622f5db1bf96eae111cd71a1a81122. 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/TWC610806111.
為世運加油影音珍藏版 (10000 Thanks Live and More) - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa6bd57f1f307f190d07751696cd3d8c22286ea4f3126fe05d21e428da456d. 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/TWC610907001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08fb8ee2a684370cd428eaf403b49895fd135558203eb629e53bee284b7618d. 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/TWC610907002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef54addf7c2f4d070723b73ee09c9d0cdd3d90cbc6015b8bb92838f13cf7a9dd. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TWC610907003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c116e085e8251edbfb3436105f2ecae3604e58173d83df0fd16b2eb3fd29298. 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/TWC610906709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68482756633dbc89c08e9a6989bf8b7b7902d5652dca387736b78e6a89a0dc4b. 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/TWC610907004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441801c74af08b77960cd4746459d9abb4e5e228f9db43899ad3c71fe00550bf. 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/TWC611108304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157bed9269462e83550ea664c9ca799ad80e1d186c818bf1718b0244592ff4f. 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/TWC611108301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151f810bb44be9d9f4443dc8a06506e3ecb764609a39c6dad48033beec201e62. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/TWA531302103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f709c00df9faff0d5e8b6c01d84efd9bf06e7a0b3bc7aa95634ecd4b2afa11. 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/TWA531302112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19353b0855497c2829ea9c7473c5dfd28562b4dd17aa947a83a13b67811d4644. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWA531574205.
生死相隨 (電視劇《秦時麗人明月心》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80e808fcf989ddccfb2f8cdd9d55720aeaf9ebc82aae46016033108ef04137e. 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/TWB512099071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd2655ccea5b1d134adb9d6278b6c71085c48ea661001459a8f583851630a0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TWB512099078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04884ffe468377d46770355b6c9ddca9345e4b035c83b729aaa0f8f0f0d65548. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TWL530800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969544435c6b21194939f1fb14b307af1f78556ae42ae85bd43500aa2a5ec7e4. 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/FR10S1618596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105bb5ceb7a95f1da47349845e624a081b89a3fb19ddcd39cb6cdff14cbb61c0. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/TWC611008207.