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 0x2cbe788a13a354d693c79cb03e0bf8d318995716a0516d451eb32ad2aa768f79. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf2d013b-6603-4d65-a5b2-82bbefd4689a.json and https://artists.proofprofile.net/proofs/artist/bf2d013b-6603-4d65-a5b2-82bbefd4689a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
交響曲 第 8番 変ホ長調 千人の交響曲 来たれ,創造主たる聖霊よ
マーラー：交響曲 第8番「千人の交響曲」
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 0x2d42102aa21f4df314152b97cc8d766c281c2d8a12aa0423aaa2139dfd2c56e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPG201417398.
交響曲 第 8番 変ホ長調 千人の交響曲 私たちの弱い体に 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83b49455c017416decfdac06dae7d664d5b14c23a1049687763e7746a21db4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG201417400.
交響曲 第 8番 変ホ長調 千人の交響曲 テンポ・プリモ (アレグロ,少し速く)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6c8af3a876c84bbf3bfb1a89f46a4c2cfb931873ae9d11ef2e8d2e6c292842. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPG201417401.
交響曲 第 8番 変ホ長調 千人の交響曲 私たちの弱い体に 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a74d813bf17fd00339175f479b9a84cf035b8081ce8cffe95f5be187723657. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG201417402.
交響曲 第 8番 変ホ長調 千人の交響曲 守り主と呼ばれる方よ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0365ebf69b087f808fef7b75d9c7d9a9f20ebccea1a327652150129fa37ae2f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG201417404.
交響曲 第 8番 変ホ長調 千人の交響曲 ポコ・アダージョ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b379c5b3bb03fbcaa7264f903239c5ce1e44fd143236207e35aa2b52ee0d50e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG201417406.
交響曲 第 8番 変ホ長調 千人の交響曲 合唱とこだま：森,それは揺れながらこちらへ迫っている
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc458c443f917fc11a542cca7b507ab08a710a864f090ff3e8a4ab4382e5e2c05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPG201417408.
交響曲 第 8番 変ホ長調 千人の交響曲 より若い天使たち：私はいま感じる
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9492e1123c7fcf51bfeb79876dccad97bd12a803d56d530212a3ff79068e3afd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG201417413.
交響曲 第 8番 変ホ長調 千人の交響曲 天の恩寵で満たしてください
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6699f5d4c54afb68983a4e874483bae3ceaf74cc6630eb9b4ef765c5574fbf15. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/JPG201417399.
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
交響曲 第 8番 変ホ長調 千人の交響曲 私たちの五感に火を灯し
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4e642cf6697f0161676484bce419459d67f3ef425fdd438efac0418716c2dc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPG201417403.
交響曲 第 8番 変ホ長調 千人の交響曲 主なる父に栄光あれ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1968b4b76af6bf4e2c7239c5c7aafe7083e2d61219f2d0860066227413834779. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPG201417405.
交響曲 第 8番 変ホ長調 千人の交響曲 ピウ・モッソ(アレグロ・モデラート)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bda54f5ebb4d57ff7bfb3f58eb415d7c73c55cc033ab590310af98bf8d5a03. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPG201417407.
交響曲 第 8番 変ホ長調 千人の交響曲 深淵の神父：まるで岩の壁が私の足もとで
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b7fe76c834c3f420daa0d2c774c01603615da7b4d8baac1d484f6166552d5a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPG201417410.