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 0xc5a7ed5c8e93e08d35c3202b56770793d9c3b33e04312ab9a0ab25e510436290. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6bebf67-676e-4adc-9e74-c8f879f07155.json and https://artists.proofprofile.net/proofs/artist/b6bebf67-676e-4adc-9e74-c8f879f07155.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0791f50ecce4c9c3d939a0f7df6fca943b90a97d89afbbc55db6dc44a6c45d9a. 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/JPVI01219830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee877974f1e906d89def74b7feff0e70dfcfeb12623c169443e20896c1f136d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:20Z), 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/JPE561805031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af61045feae0b71e8c6b5d5ca3b73c0c2e476de9162be3db5149606f34d6215. 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/JPE561805035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836ce75fe52cb516e38bf4091a72b69659f3ad709bed1990e9e45acc9e04aeef. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPE562006294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e156ced37731df88155ed3eed58800574f2ebb051b1d908c5c12c4551e03c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPT2229493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e156ced37731df88155ed3eed58800574f2ebb051b1d908c5c12c4551e03c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:30Z), 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/TCJPT2229493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a16942e66b83344ec49ee82a0c2509e9efd2dfec54fd37915ea7cd918c60f9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:43:26Z), 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/TCJPU2335235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a16942e66b83344ec49ee82a0c2509e9efd2dfec54fd37915ea7cd918c60f9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCJPU2335235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c61f44fde875fe96442bab1f09324b61ddc74afb494953875b78f122ad921d9. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JP92Q2301796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e6ee62344b6c71506ebf586887baf9cee083c6545fc41f2c4a3e964a24384c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JP92Q2301797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b0dfb3308dd0209f1f1c93b664bd00f63a4a62dc77236196ff2a4f708e7321. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCJPX2361156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd240c165e48e054e9ad1b9d62263e04f7e9a25d3e6c4cd27179b6e8fca633d22. 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/JP92Q2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6049c551c05b603421abc69fd58b059248ca686bc88323dfc880552cce9fe1ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39442bae4bb09d2f89c2947b14a3e8b9345f21f6a0a862940f03d171f86e40a4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902785fac740246c63ea073a571752b04c42d997026678c2a72ff976f6f244b7. 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/JP92Q2400468.
プレイバック・ハイライト (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b152c523785a3c6855ea58b7bce8aed5f6ad949f545660a9ed66af9dc13e0a5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92Q2400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6e8e30aa7f0c3faa3e4d958ecb2e75aef08ec7062a2f59a118889ed751be33. 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/JP92Q2400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16047e0bbc3d0a4ab84029497c3beb53c3cb00a1b500dc62cf0f38cf6a259b1c. 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/JP92Q2400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf3c6698ee74df287753c1fb5bdaddc98d4991bc7513fb60f3e155fcf78e97e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JP92Q2400470.
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 0xc302c9d7b0fed4d5fc22ca3a81622c5881109d6a7be3a469361eaf449488e5dc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JP92Q2400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5208b8fc8774a2d36b230d90286d5c38f972d51e64797633834b29e650ac80. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:05:04Z), 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/JPA651804416.
アポカリプス・ラブコメディ (feat. ルウル)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6012e91158fd0ec16f6886fb9d25566042d6fb77e1cc5b4be33f540504d34f5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:56:28Z), 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/JP92Q2502054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324bfd2ae2d000338a46306ca8b17eb37b14e2944b7202c8796ca75ac74450b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JP92Q2502053.
アルビノ[revive]-初音ミク「マジカルミライ 2020」Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a11ba1c4948483a0e28dbad0f25e2e3bb887dee818d5471e56a9713694b649. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JP92Q2200220.
Exit Tunes Presents The Best Of Gumi From Megpoid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb151a3262638a624f1a627d290b3a6f27a317d8b508d66f662bc6234482e671. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPC231500149.