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 0xe27c4124295636644c16ce32da68160602a4d91c4e44f77d7d198fe4b15693d1. 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/530d2d2f-960f-4e16-9a1e-29f7ef9bfd67.json and https://artists.proofprofile.net/proofs/artist/530d2d2f-960f-4e16-9a1e-29f7ef9bfd67.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 0x821a420d716f60ec75cfebdb4a943d910ded6eb410e06cd7d53311e644a7e69b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPVI09015860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7164cabe7ed174115042c70473d2b388cba9a879e59c9fae25079bda3ef49037. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPVI09015780.
Kaze no Fukinukeru Basho e (Growin' Up, Blowin' In The Wind)
風の吹き抜ける場所へ (Growin' Up, Blowin' In The Wind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c41700319e76616a5d0e058c291be48aa6b24954eb44b3e7596a248c90f80a. 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/JPVI09430280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77aa482cd9ed9f893c6f153170028c38b9a1f990eb92c21431c398d594b12e97. 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/JPVI09425920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc67150b42b4e1bf58c85ce4c01def8cf5376819995c7264db48d2a414b5aea. 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/JPVI09526770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea8f24e3cfaedf5d3e2e47b99de4e5776bb4819cc33674600cb34d9cefca19c. 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/JPVI09526780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0af2b277af8cb494bd78f134851836af6ce6e0767481a204bc73a8d32351946. 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/JPVI09624270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca3d9b94a44fa9b4a8d2f0e0286ee8972a2d088d78dbb66e3a8a1369ba6b8c. 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/JPVI09015760.
そしてボクら、ファンキーになった
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8e5d7ccf6101264d27e0625af93eda9c613dc2826480c54d07a24b255a3ee. 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/JPVI02404053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd04b1ef20e3126fb5a0ebaa86df2ee134739c064a94c6543fcecffe561f3b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPVI02500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512e58946b875a9a38203343daed519025ad1d13e543b6c3b80f50030c704af6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPVI02302775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd79b3da89b7411073153dea84fb643f84d96c293a9d1392f8a274f311dedd. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPVI02501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127076ff3ff39476f85bda24e4377461e3ea3caeca707bf297c47822b9b6ba07. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPVI02501037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312c7fc04b4d1c1f6354859cae44964783aaf40a2d754b86e11a8ddb28e5dd49. 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/JPVI02501036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8e5d7ccf6101264d27e0625af93eda9c613dc2826480c54d07a24b255a3ee. 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/JPVI02404053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e95a5f80abeb09d85e882ffdaff3fe94bf41b82494f03b87b9489ca32dbdb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPVI02304624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d8174ff73d6c2ec7ce2f8829ba90b76381bb62b5247badeb50759997ee9281. 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/JPVI02501039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da7b363aa2384824cc0aca641cb006b58344ddd8f17ccfb604f5b0920e5a93. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/JPVI02501038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd04b1ef20e3126fb5a0ebaa86df2ee134739c064a94c6543fcecffe561f3b2. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/JPVI02500548.