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 0x12240ae4bab3ba5a2842dfb5c726772cff265c2cb87b7512e934b1d3837def00. 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/7463748f-7220-49b6-b108-6eebd5898d37.json and https://artists.proofprofile.net/proofs/artist/7463748f-7220-49b6-b108-6eebd5898d37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
無敵ロボ トライダーG7 オリジナルサウンドトラック
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 0xd967d85f8f160e154ac90d16eb92f4c2b810c2cc92c4a3e54dace9b02469308b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:21Z), 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/JPKI07973814.
家族で歌えるファミリー・ソングが大集合! はっぴー・ふぁみそん 50音順(こ～は)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffdcb47dbeacf534d573140a4430e9aaf98f9f619126528388d236669bb1cb8. 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/JPKI00048570.
こどものうた☆ザ・ベスト～とっておきの50のビタミン・ソング～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc672cff8072fd25153d62c301dea999dbc260a9623c1cc61e62866b32818a7. 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/JPCR09504300.
はる なつ あき ふゆ ビュ～ン!季節のヒットソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28a320672f87c48c1d11705e1ead4118f6b6e956334d7ea4b92caf7e76436c7. 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/JPKI00406350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f77b006ae1aee077e2ab3547bc238c90e8b4617088e0a93395f86141f0a0aec. 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/JPKI00406349.
チュンチュンワールド～おげんきたいそう
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286698f7e6fd52e1064ae103d2a35342e986a0a56176283e539f1aea0dfa5861. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPKI09501100.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fbaa61a914e82ea46d86d5b3a5693639e9dc96e0237154cc1d54f80591d2b6. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPKI00401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807650ddb4530ed9049265bf66c0b0faecb0fea5ddc7c283f54464e714b8c8c4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPCR09504320.
101のこどものうた～ずっと聴きたい、もっと歌いたい～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6859a98b0f2df14678c90dd339cf2a271b866376960dd4ec2b660e501b4608. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPCR09504250.
～赤ちゃんもごきげん♪たのしいリズム～ベビー・ヒットソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea084ef09c10f01dfe72f4798f508596355b190e71de3abe062ad1ba66485bd6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPKI00174990.