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 0x12b3bb465270e645f750dec3a3576569995db0908eeb5c63c7ca82782d60cf1e. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28aa5794-dfd9-456d-863f-e63c77f44d2c.json and https://artists.proofprofile.net/proofs/artist/28aa5794-dfd9-456d-863f-e63c77f44d2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
全日本吹奏楽2004金賞団体の競演 一般の部
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 0x5fb9080378ac55149eb3c9bb9364e80c162a277b2aaa73268468bcc4b9845548. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPVI00451490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda357650e922d00972cebd16eb52195619000db5daa9fbdb4d9a0b46f11e887b. 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/JPVI00446820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3043a91a16af586e9a0dd68d9800957431dbf843d312c7e2a065e0ce9696d5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00451580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d6b73dd32374328feb8cd6f35e07df22d65e816ce9484616840ec58190eb65. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00451590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d01712b410cecd98db1d512cfa0f11630c4b98ea88ac9af6da5fd1e8d89464. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00446840.
全日本吹奏楽2003金賞団体の競演 一般の部
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0c52a5b4e985f787284ff05025442844503de5c4e28d52d7634394c5dc526. 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/JPVI00331460.
ラ・フォルム・ドゥ・シャク・アムール・ションジュ・コム・ル・カレイドスコープ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30949c0cd4c1d00964e4d69d8801e7b7e509c326bf9c3ff9a3c3bcd52bd508e9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00331550.
課題曲I.ウィナーズ ～吹奏楽のための行進曲
埼玉県/川口市・アンサンブルリベルテ吹奏楽団
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c689a83df714c674c186336583326086dab11e3ef80f585562066d3347419. 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/JPVI00331580.
神奈川県/横浜ブラスオルケスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8f8fe8c5dcd54c2d6847fcf31ccc0d9a09061523e33f79537d504e9f0d208f. 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/JPVI00331600.
バレエ音楽「ガイーヌ」より 序奏、友情の踊り、アイシュの孤独、剣の舞、収穫祭
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceddf94d36703afe16ccb21a77cfb2dd9a6f399bd8507bda886861de729f3426. 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/JPVI00331610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90275f26a2b65ee321986a2fa69d80e9168c15416709d7d688dc8d31831e8725. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPVI00331540.
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
全日本吹奏楽2002金賞団体の競演 職場の部II・一般の部
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b23266cb8aac298752f8e21a56c070d9675c421b189b7015f991d3d3304be. 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/JPVI00240550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2166e15e3b5639cdd0f99d3198b6e196cad4b61afc689d10614544cd64100493. 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/JPVI00243470.
管弦楽組曲「第六の幸運をもたらす宿」より I：ロンドンプレリュード II：ロマンティック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf629ce766abe1d01a40c6477505a911d963ff8e20e80a15a9bdba83c96e622f9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPVI00240660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a500d3ce56c078dfcc12259116947fd5d7a72273973fb356f0f12625b3ff450. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPVI00243450.
全日本吹奏楽2000金賞団体の競演 一般の部
千葉県/土気シビックウインドオーケストラ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fbdc77a08c712da2848b81e9417d8d80218844bdca7d0360567e4a181a4ae3. 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/JPVI00040390.