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 0x223111bbd0499828f112910993e8437e96a5623a77fc5663f008f57db5883c89. 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/3c3852ff-f47b-48b0-9681-c30b60e6a92e.json and https://artists.proofprofile.net/proofs/artist/3c3852ff-f47b-48b0-9681-c30b60e6a92e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
きらきらピアノ こどものピアノ名曲集３
きらきらピアノ こどものピアノ名曲集４
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 0x809ead22e7d56bb6158d4c970b0c73ba8b88939498364f11c8197302be26658c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPVI01233630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d5d6b3286c45f532d655b8998c5a1670a92f693f8d9be45d8f9fa811951987. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPVI01233770.
きらきらピアノ こどものポピュラーメロディーズ１
きらきらピアノ こどものポピュラーメロディーズ３
きらきらピアノ こどものピアノ名曲集１
家路～交響曲 第９番「新世界から」第２楽章より～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b7b180d2cae123ceaeeaf4acc9ee64443dab51a8e00bbfc711c1233e44aa63. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:06Z), 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/JPVI01232890.
きらきらピアノ こどものポピュラーメロディーズ２
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2853c5b99a6964c3cdd8ebfc75dd65b14f1ac1be8aa0c3b84e55c082e06689. 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/JPVI01234520.
きらきらピアノ こどものピアノ名曲集５
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d0e32defad07cd90e66ce9148ad427c8422a52b053146cb9ad0b6b1793de7e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPVI01233810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5de825c82f84ecdd1936cb380a29cdda97fe1b8565d05e9b226ce8751615a0. 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/JPVI01233840.
きらきらピアノ こどものピアノ名曲集２
Ongaku Kenkou Yuuryouji 2 Sawayaka Egao no Ongaku -Selection-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82349752cafccbf98335ac7650fba73e3b9fe5ebf9324a48c4ce2edb5c4dd559. 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/JPVI01233650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47cd229132df99f06fb793971cf5ea7259b0c252652d7b1ea5ee9510da30110. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI01233830.
アメイジング・グレイス（作曲者不詳、轟千尋 編）
もしもピアノが弾けたなら・・・ 弾いてみたい名曲 35
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebb0a9d51df47dfbf48d28922616ea5ac5a106e0a320be2437a29387e1b2b4. 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/JPVI01234810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5de825c82f84ecdd1936cb380a29cdda97fe1b8565d05e9b226ce8751615a0. 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/JPVI01233840.
Ongaku Kenkou Yuuryouji 1 Sawayaka Mezame no Ongaku -Selection-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c145d528ee80141b954f3b874b9f161a8d74ec177be72e31def93ae74ec2e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:52Z), 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/JPVI01233850.