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 0xedd82bd34d8a287815486c5a38f48da9e80d00aa2f87bec21dbbc69175aa9cc5. 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/bb15daf7-c16b-4c18-8768-20119c133491.json and https://artists.proofprofile.net/proofs/artist/bb15daf7-c16b-4c18-8768-20119c133491.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 0x51abd79044621add4decac6b42b08726479334132c261dfebde3140a6449bf33. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE561905638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9caf0ad0d9edfd0f09a6283ce559c49633d4a38c1daf59b6efd14e798e706f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPE561905641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3322193309d0c6b31b7f64a81c4fe42a85315c3d6dc4b04416baf7d6987bfe1a. 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/JPE561905643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187bd1d21ca1858519a824a43539aaa229180aa1e486ac4eb345853de1a337a2. 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/JPE561905644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a012fbe9ca57696ba617a17ec0e8fc126e39012c56bda19c829252e030c4f2. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/JPE561905645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfd4eb34bacab0ae6cb40d6b5696b00e25a0f7c4cd8f209044f41f21391c253. 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/JPE561905646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ef65d393507303bfd4526caad1ca05642e5598feb3356879c663669ef3b43b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPE561905418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589472aead405136abef29501141a70198fb025787d8c97087a5ae87b9795cbc. 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/JPE562006540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935de7f53da475c81daa691209bb410bfe051fab7879bd5cbec1b4b29d897c08. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:04Z), 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/JP92Q2200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a549bc91fbc225746774d79e9007c2dfa30e8e1c1f23d8d62c4eb30398631. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JP92Q2200606.
スーサイダーズディストピア (feat. 鏡音リン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f48e95df9339d4b148b50da593d3fc31a8fae46e6e03e8c8b52c274aaaa8e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JP92Q2200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8044618b223ac1f72298b9140fc5bbe5ea132a0d884d8aa4be7c48878186c80. 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/JP92Q2200608.
エンジョイスローライフ音楽 (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4904a784ce1a76a836058128a038c574c3268b00e759b7fd480e7642d823ab2b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:28:30Z), 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/JP92Q2200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ba23b2301296c2efb423c08295814ebc3e5293406a6295709e2dd842cf16ef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JP92Q2200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b7063b6f089226b2e980004dfddd9938bd65c0b1cf1bc83ae44d4699e48f11. 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/JP92Q2200612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05bcd703501ed155723caec9657025739d65516664f6e7e6c15347ff1e0c841. 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/JP92Q2200613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53670a03a83cf4489ddacf2599d7eadac24d876df02c1783136f722a05cf18. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/JP92Q2502327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ea4d54be1e761cc9bcc55411ed8072d6a9c5280e37b88d760dce98f5cab81. 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/JPE561911332.
Hatsune Miku "Magical Mirai" 10th Anniversary Compilation MIRACLE SONGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ad609d5c134307fc997d6b80f993a07141a0b5b88ed6d01ca83b4be42a2f08. 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/JPVI02204163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f452ae3eeb5e886e74c3970d819afd912b66692cfe741efd8d2c8a0975e1990. 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/TCJPS2243302.
KAF+YOU KAFU COMPILATION ALBUM シンメトリー vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ae9dd037264bad6bfa05c62f210724ac25afca2a1786bfb7b95097584e06a5. 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/JP92N2208998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b982d32d3080882c6881ba155bbf9d8d13c63d022f981e8e3923bb575b8da29. 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/JPC232200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3339fc1ccbc90d56c18da9be86b4606ae0ad295bd8b602748c9fc7f398923. 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/JPY392200653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b21a005c3161d7b10a797f103ad9cef7343be6352558a2425404f4af74eff1e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:46:06Z), 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/TCJPO2141688.
METEOR-初音ミク「マジカルミライ 2021」Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e24b784cea7153c314984b22ddfcb83091ed66894c84cbf0db900ad1b0bd2a5. 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/JP92Q2301557.
CHUNITHM ALL JUSTICE COLLECTION episode III 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828196aa918fa53ce0e57ee376c5858e82757e1cf2c5ea8a84bc696428888f4. 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/TCJPA2488003.