1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6469eb7f6f27aa086177b2351158025a0937ba5ceda032e42415707516ae6fb1. 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/2c904680-4775-410a-b7fe-b0d209c3ab89.json and https://artists.proofprofile.net/proofs/artist/2c904680-4775-410a-b7fe-b0d209c3ab89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
うたって学べるおぼえ歌～「ABC」から「九九」まで!～
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 → block OTSBitcoinBlock must exist at that height 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 0x16f4b9bbd4e550f3f5266f1b13c5aeb8cb2638126436ce9d028ed034d6f0c1d1. 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/JPKI01110909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a03f169804570e7b00d249778526c415a69db63c3a3b916b29670e0a31640. 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/JPKI01110910.
あいうえおのうた～ひらがな覚えうた～<あかさたな行>
あいうえおのうた～ひらがな覚えうた～<はまやらわ行>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c2478940b81a2bcbc271c25b69dcdd6a8b8bd58a97485552ffa40f87f6af63. 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/JPKI01416519.
ぶんぶんぶん(ソファミレミファレド)
あたま・かた・ひざ・つまさき(えいご&にほんご)
しあわせなら手をたたこう(えいご&にほんご)
むすんでひらいて(えいご&にほんご)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba129818064a687ca9bc4483c23228d31377cbdd0c6361c84d1a64c96a8b152a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPKI01214911.
ホーキー・ポーキー(えいご&にほんご)
ハッピー・バースデー・トゥー・ユー(えいご&にほんご)
マザーグースからはじめよう! 3さいからの英語シャワー～きいて・あそんで・うたえる英語のうた～
Baa,Baa,Black Sheep(めぇ、めぇ、黒ひつじさん) ※鳴き声入り
Did You Ever See a Lassie? (おんなのこをみなかった?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0e3037ba7ed51659e4917caa565e710f7e92776d240e7f90093136b26ec51a. 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/JPKI02215865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf371557da3d4c7238fc0a319804a857e825d7862da1b0ee246f2f41c6ea2fb44. 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/JPKI02215861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab14504c28470034a6348925f9db5eff21765315a849e569f2fb0b72d626c3. 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/JPKI02215862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bec4b7152d247e494167a48254d232ad50b66ec623fa990170f41717800f71. 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/JPKI09317180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2098ebf64fa52f78ca4fa8be5c226a8d71eeb93a84e4f921a4b53154a06ba0c. 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/JPKI01615800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66ef570e2ef2644e7c836bb3a706a2632683470cca0b109ba0ed271338dbbf3. 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/JPKI02215713.
Mary Had a Little Lamb(メリーさんの羊) ※羊の鳴き声入り
Old MacDonald Had a Farm(マクドナルドおじさん) ※鳴き声入り
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7f6d54fd937b2a10050f9cbc6e7f9cb30df880de7bac6d59a678a7a092e7b0. 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/JPKI02215871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0490c0c5c8cd336e1cd1a799785292f5a5c6718d1a4085b92acbe6d7a0d57eeb. 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/JPKI01817259.
Polly, Put the kettle On(ポリーちゃん、やかんをかけてね)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f38782c2e43cd716860b6b25f2a9f6aa6f6d4e67bfd1db386d7a1f528c2b4. 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/JPKI02216118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cc0d325d5502738a8d3b39a7d9df704f86e9e0d532def1f042de610b29ae93. 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/JPKI01910106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801194bc707e9215aa0f64d206f57d92df97976590638897aa203cb89bac9141. 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/JPKI02215867.
Star Light,Star Bright(スター・ライト、スター・ブライト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9459d0d0a6cc8e5785f63efa79ff2e18fbfe3f9a3a1a3931b8e5ea53deaaa40a. 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/JPKI02215868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e769b4c0fbfe7e323dfba33cb4acac29d276dd54c813fc55b4d9d2b66f767e. 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/JPKI02215869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343c1c412398726a006c08cb702a7d5c461fc002edebfda789df79f8508842d0. 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/JPKI02215870.
This Little Pig Went to Market(こぶたちゃん市場へおでかけ)
Twinkle,Twinkle,Little Star(キラキラ星) ※キラキラ音入り
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f07eeac3254ea776f13a51e6201e34a09716a66c99ff951351c36a9f4accedf. 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/JPKI01817262.
Close Your Hands,and Then Open Them(むすんでひらいて)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b213d4b7c15c8801a59b9f33fbf740163275e88910af0cf7d72aef2099112a3. 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/JPKI00813538.
Head,Shoulders,Knees and Toes(あたま、かた、ひざとつま先)
If You're Happy And You Know It(しあわせならてをたたこう)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54b8411ccedc816bf8b30fe2c497358c4c283e239466fbb847f7f852ecf7d5a. 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/JPKI01720245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabd2fe1d5ad79c22ab1255ff266209fab055e7b075cd5ffb10b5ccc7e8429e7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPKI01615799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd381b0795e1135e5c038f3f1af08caca33f5b9c60280a90f4f4e609092a9332d. 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/JPKI01910743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413b0fdde97cc99778c9402620a2cf59648c6fd83325d0a0d9367a8273481c0. 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/JPKI01817269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb592e9100abf2621827188e6516e244ae56e0581484627e2ec5dff4c964e4bce. 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/JPKI01817249.
【ミニ英会話】ほめ言葉いろいろ・おやすみなさい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e8fca46219aa5c7f0864f89e3937eb6c0522390eb50ebf8b224cd00c564f8. 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/JPKI02014191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3729519e66e4b5712fea2a4c0643e37de9c7042beff01aada9338819d126bb0c. 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/JPKI01817252.