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 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 0xe47210be9cec865cff1cce06d7b2525435610a109df8e72366f811b9e71ac6b1. 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/d4c43a67-3b34-45eb-b454-f3d79538b1cd.json and https://artists.proofprofile.net/proofs/artist/d4c43a67-3b34-45eb-b454-f3d79538b1cd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
アイラブユー ～オルゴール・J-Popコレクション～
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 0x173b24566b98106836abee826b8db8101f43b061970669df971d9343cb857c6a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350104 — a six-check JSON result.
アルジャーノン ～オルゴール・J-POPコレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f5fefc07d2d9684b72539b76b78e1b5eeb14b76e7ea57b7320eec71075b80f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a7063337affa1253a7a2db788b3e5898752249dde9fcffefaecdff6156985. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350306 — a six-check JSON result.
絆ノ奇跡 ～オルゴール・鬼滅の刃 コレクション～
愛の花 ～オルゴール・J-POPコレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10b153fdc9e7054f4fbf8682d31d72108660c178fcb55dfb1905d2ba7088a9d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8595bb17b24a34ac43e940098f3709647f3cf82711d4aae2b67d7a8027e18. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350502 — a six-check JSON result.
裸の心 ～オルゴール・J-POPコレクション～
生きろ ～オルゴール・Mr.Childrenコレクション～
マリーゴールド ～オルゴール・あいみょん コレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a05baf6fb833ec9bb7e87494f6f74a75dc09eaa60f73c57b6e1dd4247c57e2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350802 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9e70ea1b601999672db46aa46bdce954269dc4f2a3c77733180474e41193da. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350810 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503ed5951c80a513bb363f64bb93d3aeb94f8953740510c1a2d6e6d6d0540c6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362350812 — a six-check JSON result.
明日晴れるかな ～オルゴール・サザンオールスターズ ＆ 桑田佳祐コレクション～
いのちの歌 ～オルゴール・J-POPコレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac91d0b0061a4a75a2e822bb69a0313c6f9b74a8e2506a575b56a58126be2b8b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362451201 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258b71d006192e89598805be677eae3f0759d05c6d8cb76bf1641cd9266729d2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362451207 — a six-check JSON result.
旅立ちの日に ～オルゴール・J-POPコレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003aabde59787b1fd78684490eabbbee51d48ef933447148eca88da4223c4120. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362450102 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeedc17bddafd06a81aeb0e21f4e54d7358aa637cc4c16104cf33a1c828c256. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362450111 — a six-check JSON result.
空も飛べるはず ～オルゴール・スピッツ コレクション～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7bc421327a1d75d99485fe4cf6fa2f2b873c157f046ccc56f9fe4110aec9d8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU362450411 — a six-check JSON result.
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今宵の月のように ～オルゴール・コレクション～