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 0x86b7b5c38def3760e70ef26c24306613cb06901d3de7e6a77170c71638b26cbe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab.json and https://artists.proofprofile.net/proofs/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Osamuraisan Selection vol.3 ~Vocalist&Guitarist~
magnet [feat. kony & Yuuto] - Osamuraisan ver.
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 0x26826c5d541d337614b9fed12da623332ec4d44af82582d21c6e94738e092676. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:36Z), 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/TCJPG1716899.
Rinne [feat. Glutamine] - Osamuraisan ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ffe49ad700b2a790228471a06973fb5b8aca53676bca37e01442ca63a2f1c5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCJPG1716901.
おさむらいさんせれくしょんvol.3 ～唄ひて弾きて～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21222718646fd4c0faa2290070e3e584890fa75da9d0d7d1101b4ee9a86ed0e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPC231300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ee097618d00df5844bf7194def14cc304d4d3804052242913da37278d7566. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:22:21Z), 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/JPC231300721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7980ce11b308e9adeae8e63bcb904a3c0fd439929f1551a119b7f0368b9842f2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPC231300744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21222718646fd4c0faa2290070e3e584890fa75da9d0d7d1101b4ee9a86ed0e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPC231300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e60748a83ecbc2b2c28bad096d86579bf02bd0224209873daf6e2c058efaf. 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/JPC231300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a4473f220b9c8d271a0df17cf4d3a44ae758b8d62e546edfb4d9dcbcedcaa9. 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/JPC231300722.
Osamuraisan Selection vol.6 ~Japanese Rock~
おさむらいさんせれくしょんvol.6 ～邦ロック～
おさむらいさんせれくしょんvol.7 ～ぼさろん～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710083db85f1ec27999550f31508c1c698ffcdbae35e601e18555150ff244a6. 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/TCJPD1567268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df25e077feda879e0e4f9b5f78059ed958b1b3f240ae99a922b4ed76fe9394. 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/TCJPD1567270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757da0ac6f1e99a2533f3b06fed756c286c6473ede7838bc9bd0e83e706e099e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCJPD1567275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa98bb6634d85c5bbeadc196a38e7b66c80ce0c174f493f041c8d8d7868af4. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:03Z), 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/TCJPD1567277.
おさむらいさんせれくしょんvol.8 ～唄ひて弾きて～
Osamuraisan Selection vol.8 ~Vocalist&Guitarist~
Natsu matsuri [feat. Amatsuki] - Osamuraisan ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732e39067af2384850459d0781cf6eae9d6bab86d7e661db65947cbd39ef5dba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:31Z), 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/TCJPG1715840.
おさむらいさんせれくしょんvol.9 ～アコギを重ねてみた～
Osamuraisan Selection vol.9 ~Guitar Ensemble~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b172f8fc3a0de26bd158e30f8fb2a1fe0c9c7f48c6b4394f40d118387e33297. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCJPR2234402.
オルゴールで聴くおさむらいさん
Relaxing music box collection of Osamuraisan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d294ed7a01b39e339bd11c08c73b1ac77d0a5052bc949f9b325ccebc5c24ca0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:39Z), 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/TCJPQ2149254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf896e2d20a5f4350de73cf5794206282a8a1d559a8a18020d49d8ccfad6f21. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:39Z), 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/TCJPH2526025.