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 0xfc251028f13493732438890faaf56a3e4185fb7674f60b68a6840fd6cd4eef4b. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f36e8936-d7de-4f53-859a-289d4fcc4997.json and https://artists.proofprofile.net/proofs/artist/f36e8936-d7de-4f53-859a-289d4fcc4997.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ブルクミュラー 25の練習曲 [全音楽譜準拠] －監修：神野 明－
ブルクミュラー25の練習曲: 1. すなおな心
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 0x84dfd4269c6d0c691e1b844340b7fd20ea70ab27101c32af79efe37466dfd94e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPH290306701.
ブルクミュラー25の練習曲: 2. アラベスク
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5656de1707d0d2b4d4cfa40471c82a883dd63bb586bc9ea677483e7110cc21. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPH290306702.
ブルクミュラー25の練習曲: 3. パストラル (牧歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbd79c84ab486db12ff7a734e45de71778287dd4b0787d9d264f144e64f8e70. 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/JPH290306703.
ブルクミュラー25の練習曲: 4. 小さなつどい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83fbcd2204f8221571079025b487d642f2d453840f6bfae9827d6f4a8cd2f2b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/JPH290306704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692a41561ae6732fe21c92922e24d20f1b9f6283ef22b072ec0442efd2c12b8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:00Z), 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/JPH290306705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f35e8a508e88e0eedd43e48e7e935b18d1c759406c250091c35971c825f806d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPH290306706.
ブルクミュラー25の練習曲: 7. 清らかな小川
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210fff243ab937e08f3f4d0f3c86e98cc8c5b53e319f63166dac80e1521663f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPH290306707.
ブルクミュラー25の練習曲: 8. 優しく美しく
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e181c548cff90aac0b09360299582d26eb7bda0161e8772d24ac3f19e15655a. 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/JPH290306708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d515a99602a4b38dcbd55201f415c4b2e0f2aa53aa0bcdab9a063b0519d3399. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:41Z), 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/JPH290306709.
ブルクミュラー25の練習曲: 10. やさしい花
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bb931cd0ed162c7dcfd481928c3f1a441a3db3de9d146c19856d8c13d4b710. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPH290306710.
ブルクミュラー25の練習曲: 11. せきれい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd88b68fb5629f32d557209d88315fbacd2b9b985d91fa799b4c1831ae7aa0. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:52:23Z), 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/JPH290306711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20da25a11df6b345784bd844ce4ead69a48cab5e860cacaca502f1cefd483591. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:47Z), 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/JPH290306712.
ブルクミュラー25の練習曲: 13. コンソレーション (なぐさめ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829a717f34ab7cf824e44927e3aebb1acb9f53987c3a3f1109b34359913632f8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:46Z), 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/JPH290306713.
ブルクミュラー25の練習曲: 15. バラード
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37306168fd8a0c640118a7aec2daa3bfb9474660316af90456cb49bfabdadc05. 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/JPH290306715.
ブルクミュラー25の練習曲: 19. アヴェ・マリア
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4767d6d70078b34f6e281da75477edd73f11c15f2580aa75768b7778478899. 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/JPH290306719.
ブルクミュラー25の練習曲: 20. タランテラ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f0094ed662603253e24c5def61f2f392864fc0619522b64b498514103ef430. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:46Z), 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/JPH290306720.
ブルクミュラー25の練習曲: 21. 天使の合唱
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f91179e6d719b78ad1ce25138bdbdc40a5546c021b3d7ae43d08a976fe9690. 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/JPH290306721.
ブルクミュラー25の練習曲: 22. バルカロール (舟歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d82a76b3e88f25333057e109ab9de3f6bc0be56f9e103a137d0a0327825a33f. 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/JPH290306722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5076707aa47c0863b4ba88eb34738a33ccb431f7833bea238d764ac94fea03. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:17Z), 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/JPH290306723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621e086d68f02abbe51f9d8b69ebd276a684320a00a8791458e6c1d6f75fbb34. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:06:41Z), 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/JPH290306724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f2a0be36ce8fbe5120d7a3c8412c57839fbe48ca7c86aa17f66e2f40277b9f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPH290306725.