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 0xf6ef7336b937f54cc52890f757e671006f12f30938680730d3813f64f239d525. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aecf55c4-a2bb-436f-bb02-a1ced8465ded.json and https://artists.proofprofile.net/proofs/artist/aecf55c4-a2bb-436f-bb02-a1ced8465ded.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
こどもの日 5月5日(端午の節句)～節句や行事に聞きたい音楽まとめ♪～
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 0x9600479fe2356e52172f290b488261e6111f8a8f1c6d3c1b7ede20873bfd8085. 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/JPKI06941763.
あたらしいともだち・これからもともだち～新沢としひこ&中川ひろたか お宝発掘&名作ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0599906ddb007a54fa2fc7891233c2887bdeeec304d039824fda4612eeb8c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPKI01713006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cefbc19f58377ce42daff9863fbcfac955edd24966dbd11094e0531325e8378. 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/JPKI01617485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5051bada02b169eea92b1f6018c4bed40c19cb9d77c93fb7b2ec8f4c6486d01. 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/JPKI01713011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387f92ef8551576dbd632904e23d46b5a1e076b414b78967eba4dc9e80cfc9b. 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/JPKI01911310.
はじめての音楽会～うたとクラシック～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64505f2134c1c52c9d9d17470aecaf52760a611fccdfce9cae6688336730b80e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPKI01116474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fa5164b6351a3c519105308df1f97d3c6f375c39ea8926cb410891147a701a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPKI08589438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d6ca5af9494506ae52257654779b3e61401b0ab6193e431e883ba5aeb3beca. 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/JPKI00506964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e3d2704ee188d6f5d952d7dc931f0b9f69e71e8e3cd1c9742b8d7e6c52d362. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPKI00048500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea32b0dffe9111551370158cd7091de694efa1d963f414b3349ce76c812aa6e. 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/JPKI00813709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6449ef69fe81e0b69cde7758260bb41d0ad5a36e6dcbf4677c7387d2592514. 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/JPKI09423502.
レディス・オーケストラ・ジャパン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89c5d0c1e0dcea02747b852d209f1aa1f86ec9b1e92fb8d04797119a4a16b17. 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/JPKI08897476.
いっしょにうたお!おやこでホッと♡こどもうた～保育園・幼稚園・こども園で人気のメッセージ・ソング～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059aeff897498575cbe6407de37606961386d70599c5662301b9f8b8c9050ef. 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/JPKI02215964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b78d32d8b4981eace25c43291c12debd2e5af74eadba7507f6b4aa40f7519f. 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/JPKI02215968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ff8f51098b45b62f4e7a03a1002f74972e2a84e9277a847095692b009bb074. 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/JPKI00602618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0072fca6be66aa16651a85b62e69341da7a393a7d560c208b4c2ea6616be5. 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/JPKI01819030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996191d0609ae03276047806d7c461a9489822c25fdafe84f99d8957788ae1ae. 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/JPKI01312528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d5ad65d6f8bf81e7113f8a87cc50b2a69f3ba66f4189c7ccc9765745021fe6. 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/JPKI01813950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67408f2a843519f8ba13d3c92b1d30f9f8d4146360313e1c078c8fe6ab9e4979. 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/JPKI01014775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316246cf0e568cd71487efe3019efdb251005e657de376fa11cef808bafb352e. 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/JPKI00707830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6808fcbbc67be59bbbf8fb12b5bc1c2c9bded789d213140f77822eac23294d71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPKI00812076.
きっと明日はいい天気～中川ひろたか こども名曲集～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ca48e4eb1a3c4ab1aa08f5bd83c5d09a1cadc443e2d3d8267fbe5e39ef149d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPKI02310351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc161ad774aa045809de3956a8a2c9af5ab6f42ffeb6df25e1f923b69a00559. 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/JPKI00815135.
～子どもコーラスと生バンドで歌う～新沢としひこ&中川ひろたかソング〈カラオケつき〉