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 0xb6a1169b0f33f7b8d3acd05c8740be3a1352f4d7a4d55bea05688d76e382bc4c. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76e790b6-9dd0-40c8-9da4-5837449937e1.json and https://artists.proofprofile.net/proofs/artist/76e790b6-9dd0-40c8-9da4-5837449937e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
umatoshika (musicboxversion) [instrumental]
Into the Unknown [cover] (music box version)
Pretender (music box ver. - Instrumental)
machigaisagashi (music box ver. - Instrumental)
parabola (music box ver. - Instrumental)
hakujitsu (music box ver. - Instrumental)
YUE LIANG DAI BIAO WO DE XIN [Cover] (music box ver.)
J-POP Best Hits Musicbox Collection Vol.139
SORAMO TOBERUHAZU (music box ver.) [Cover]
J-POP Best Hits Musicbox Collection Vol.146
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 0x3aa933a8f222b14c0a18ccf5f488f1caaa9176c4560aabc1ed36a50848c31a2a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCJPY2479807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f250cd135810955bcf8f336ec4a54b9c9bb1483ec88c0c85f740842e8796dfe. 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/TCJPY2479524.
Pathetique Piano Sonata No.8 Op.13-2 - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6ad459e57596dc31beeaa89525185b07474e3168650d17806549f2e4eb0e55. 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/TCJPY2479239.
Nocturne in C-sharp minor[No.20] - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ef62198596e61c09c13392180512eb0cded4780b1154497e1c4967e28b252. 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/TCJPY2479315.
Jesu,Joy of Man's desiring BWV.147 - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52b3e5a81b4671043e3a2d921368ae5402616dea3d80746b1fc918b5a9742b. 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/TCJPE1614574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a128202f3d9a44fd79b4b354ca16edbf78ed41cbf62f6f5bfe2fe6a60bc729. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPY2479796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faa81a80ac4c66eb210a19f84635405d27655c3e22fa486dc2c9d1c020fa54a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCJPY2477030.
Moonlight Sonata 1st Movement - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49638c4afc9ee4fca0052031cc7f8eaf4ad0a2288c05004afac80c88178986e2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPY2479252.
VOI CHE SAPETE CHE COSA E AMOR - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb47874cc0a4bf24216e7e5ee496f322b4df9f543c6bc24bf1779dc628f2c70e. 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/TCJPY2479322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24628639fa1f81f0dadc8639051b56a543be2014d590eab01c759bed1b05850d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCJPY2479426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fe757719e677760ea5219807225c457d6b31e7cefac89507a3283b5ad42776. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPY2479446.
PEER GYNT Suites No.1 "Morning Mood " - music box ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34079e8ccb37a1293a9660aa9a1b84b708d5303beffff1522149cd2b5c651c71. 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/TCJPY2479758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0cfe7a7edea025bd905208060de7decadff8a498964e6a0d9e28cd0333779d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCJPA2447136.
TENBYOUNO UTA (feat. Sonoko Inoue) [music box ver.]
Shine in the Cruel Night (music box ver.)
A Musicbox Collection: HEISEI BEST HITS Vol.1- The 90s Beginnings