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 0xa404980d41c256239dada45a5307f69bb636929593ae3f1f6e94789ab38ace71. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/707577bb-e936-41bb-a54b-b95bedab639d.json and https://artists.proofprofile.net/proofs/artist/707577bb-e936-41bb-a54b-b95bedab639d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1c4d93c544fc5fb2e6f0ca3fb439ac7806193e7b4d32f17d8583927c5a87646a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:50Z), 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/TCJPG1858791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb478c395001ac626310927c76e58860e9ea3132632bb9fcd4524833c0fcfa63a. 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/TCJPG1858793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5692f12b00cc364e5a635f5ae72bdafa7a615c92ec7728dc86ab08cfd71494b9. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPG1858794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec29084e946fd2072c73b2a4e36c9674da3f19be7a1b71a25e0276aa4f294b. 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/TCJPG1858795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315a8ae1ca8e48ab3761ac143545606a440285b4797d1fa7c15021656cf800de. 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/TCJPG1870994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0458ff7012e524bdcef46d5b6350fa3d6283ef3252ceb1a50558a51eff372e3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPG1870995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873288325f8fc20b968d4b812f607097723f4cee1332c9b84445bcf5121e26a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPG1870996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd121e6cd96c5240a383f370358d03f1cb480d0ff50d17d6280de854fa30d14cf. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPG1871000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881d8f0462c93da6d5ee1dc7754d6ae9ca04c64205d7bbe4758167443a6e07a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:25Z), 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/TCJPG1871002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8639d7dc845fff56568cbbe30766dc919526eb294315eb2cff72bb2f4d33dc. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPG1871003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb38046a72199dde40ab242d197f37fa1f6eaec839526f3fa75cc000d77b032. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPG1871005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8436598a784a0d3dbcb6443b1546cc3b075fceda97bcd5e14e03cdf8657e47. 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/TCJPG1871007.
こどもの朗読「日本昔話と世界童話」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b58cc8b79b6e09b4642c41708ff1c627b14dd8dea7a2a998c807c034cce74e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPI1971808.
おねえさんと歌おう！童謡・手遊び歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e1922040aa8d016150f6aad66ad72d6446f30ecc93823408454761dafe80c. 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/TCJPI1985932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c41b7476bd2034ed9c3bc887c5123adc14a544f6b9d79373ef1fec7c653054f. 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/TCJPI1985933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea88fd961444fd7ba0ec0152debc5cea5435b7f53a9064023da3e128792508b8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCJPI1985934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f20aa3bba42a3e551ea373d7130e4d41cc18c4cd5cfbbbf2fd98323f6e8744. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:04Z), 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/TCJPI1985935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6832edabbae7493d3ec8cfebabe3a0a9b7a091bbddf53405efab6cd002a55560. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/TCJPI1985937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046e7ea4b210a8038aba5e153e6dc82b06b5e34e188fa55a3ee3ceb54cb4cb8e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:19Z), 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/TCJPI1985941.
おはなしいっぱい オリジナル童話
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7067b6c2872dc41f7c70931f06dcc0b06b443f4e89760be4af0971b3d44846. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPI1987181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c0563f36a2e69783790254f772e6691c21cbfab65273e47307c352725a5f2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPJ1923490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdb92e11b62390164d081aaec04f5bcd6312c673fa8a82787b103fed472029e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPJ1923491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eca714d1ae2eb8a65130a1d822fd7b58ba789d5c1d53708e87921a2519beab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPJ1923492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0564a52362cdf62ba23f4d1ef7b352aed8cee03d3f05afe50c2dd8b3c3b89d63. 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/TCJPJ1923495.
こどものうたBGM-くつろぎのクリスマス
だんだん速くなる！楽しい手遊び歌♪
お誕生日の歌 ハッピーバースデーソング集
赤ちゃんも大喜び「体も使った童謡・手遊び歌」
子供向けの楽しい英語ソング学習教材
日本地図の歌 都道府県を覚えよう
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e84374328c37676b2e3ad41a81c5dd1e2db45935ce359e7516a9ef1c39d9f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:37Z), 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/TCJPM2011948.
グリム・アンデルセン・イソップ世界の童話
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087a1a297ffc6cd1fd977a9ea5ef759d8ccb9b1045ff5b8b9cc940ef3d198663. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPM2046415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25fd192c33eca6939500b279eaf9fe3f3b110c2806357930a905caadc2f085d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPP2104345.
あかちゃん向け手遊び歌・わらべ歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b88ba42021bda0d487e5abfa7e07f9274007643e170b7e6fba4d8c368ac08. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:47Z), 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/TCJPP2195137.
楽しい英語童謡ソングセレクション
いろんな生き物の歌ベストセレクション
楽しい童謡・手遊び歌ベストセレクション
眠る前に聴きたい 癒しの童謡ベストセレクション
日本昔話・世界童話ベストセレクション
ゆめあるボカロソング ベストセレクション
学習・知育ソング ベストセレクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e84374328c37676b2e3ad41a81c5dd1e2db45935ce359e7516a9ef1c39d9f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:49Z), 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/TCJPM2011948.
昭和日本の歌 童謡・唱歌ヒットメドレー
変わった生き物のうた＆デュエットソング メドレー
英語で聴く日本昔話＆世界童話（英語のヒアリング学習）
ゆめある英語童謡ベストセレクション
いろんな生き物の歌ベストセレクションpart2
おいしい食べ物の童謡・手遊び歌ベストセレクション
お誕生日の歌ハッピーバースデーソングベストセレクション2025
いろんな生き物の歌ベストセレクションpart3
いろんな生き物の歌ベストセレクションpart4