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 0xd1c81288c4953299d9f4505fa3f426c85ee7f7fbdc77d04a22e27efd74fa6425. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd4b8767-71ae-4c8b-8f76-e69b27182d07.json and https://artists.proofprofile.net/proofs/artist/cd4b8767-71ae-4c8b-8f76-e69b27182d07.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 0x9dec4c509020a2cceec2a7878409c64777f82f451b3439b3146a1cbb0c4b7515. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/JPCO00843140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215ab5dc75f8724133c1575323ed7b95ecc24a306afc7913f6262e62b1a87cf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPCO00843170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b2438737077b1c3b10d94fc27e9cbdc4ec1d2d934e6066267ffd0dd6d07d48. 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/JPCO00843190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e99746298727896a89a01539b3b3c652785eef0b79c7b61483cd9b14533921. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:45Z), 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/JPCO00843180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86db11bea238eb42e93c50831b443809b02e1ac1e1c110c03bbadd9cb732d51. 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/JPCO00843230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d6f1cea3de3394c8b6717a719d14cf6bf380923cc828a57c85422585d9fe3. 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/JPCO00843150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc066ac30ac6af302013d4cb01b4b66ff2d3b035226287d2acd6b96c7a35aa. 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/JPCO00843240.
ブランデンブルグ協奏曲 第5番 〜第一楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2571259fcddd0da63e94839cfaf73debd9d8de82564d9045886ca6bb28d3d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPCO00843210.
「コラール」 目覚めよと呼ぶ声が聞こえ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb215ee1edb14074027d22df80457c4f0bacd7791eca54b4d6a34f19cd9492782. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPCO00843220.
無伴奏チェロ組曲 第1番よりプレリュード
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17bb2fcaba4abc4b21e4f553e0cef439586f8d8f56b4ac7d192bb51c203f2d2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/JPCO00843200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc578e365392b070b4a47e14fda1cebc9ab1ccada95c5551651f5bc20c6fe8b4c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPCO00843160.
クリスマスJAZZ 〜ピアノ・トリオで聴くJ-POP
〜Angel Jazz〜 クリスマスジャズ スマートパック