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 0x01de71a0d8c1165f9d2a619f81868f2e1fde0b197106aa9ab1abba13a69c587f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddedd6d4-7ac7-4d0f-9130-25d90e63391f.json and https://artists.proofprofile.net/proofs/artist/ddedd6d4-7ac7-4d0f-9130-25d90e63391f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
吹奏楽名曲選 エル・カミーノ・レアル
Selection of Wind Ensemble Masterpieces: El Camino Real
Selection of Wind Ensemble Masterpieces: Festival Music
クラシカル・マーチ・ギャラリー 威風堂々
Classical March Gallery: Concert Marches for Glory and Tragedy
Selection of Wind Ensemble Masterpieces for Junior and Senior High School Students: Symphonic Movement
中高生のための吹奏楽名曲選 交響的断章
中高生のための吹奏楽名曲選 シーゲート序曲
Selection of Wind Ensemble Masterpieces for Junior and Senior High School Students: Seagate Overture
ジェイムズ・スウェアリンジェン
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 0xe454fa600bbd4bbba52f6c132652b2a940ca0f8d3dd985a59c3d8d7c1e3f3901. 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/JPCO08900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71763508f330c601aeeb32497f2481cfb37c264f465009b1167c43760fc8e7f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPCO08900130.
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
組曲「三角帽子」第2番 IV. 終幕の踊り (ホタ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d3aa58ada64be5dfd313de442487b5639e3aa9fc9306cc6d3e3173a3bbcf20. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/JPCO08900250.
歌劇「ローエングリン」 WWV 75 エルザの大聖堂への行列
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210b20e1b5d918b68d93ff1166bf60fd4acf59d015690a29a8e51c8ed7aa7fb7. 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/JPCO08900220.