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 0x2847ac057453c5346a2420cdde95cf9e56fcfae8093309d0e01ab1cce5d4496f. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5abbbb7-0c7d-4df8-b3d9-3a5ba1a67841.json and https://artists.proofprofile.net/proofs/artist/c5abbbb7-0c7d-4df8-b3d9-3a5ba1a67841.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
自然音マスキング効果: 周りの雑音を消して作業に集中する音楽
周りの雑音を消す自然音: 騒音対策ホワイトノイズ環境音, 集中力持続
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 0x7e6f648dc364013752f34b5e2ca8768cbf9238dfd691dbab27b6d54bf936b5c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITO102201898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b03ac6fcc1a6c9547d4d68e167159c7a61eb1f038636fbcd5c226f0cd422b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO102201899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1b3348c1363f54b3c299b8915b385578cd73ff6ac44b0996eb8dbc47e07181. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITO102201900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90597d433e5c063948eff1096e03e11682b4472249d5933a97963b9cb5844c48. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITO102201902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923d57d3df92ad46f4a1cfc3d5582a19206fb05701605dd94f3ffdbb5aefb4dd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITO102201903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551ffd35e973edf8efb746aad3368bebaa4f5de9e99a892d87e16523dad2c31b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO102201904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fde8bf5a27be1a3faa977704d926f1071b8e02d6d55a2ec349a7e0cc72040. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITO102201905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddad82088343450bfdbe4d86be4688be52ab2b6d38d92ccd2c9061eb69e9f84. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITO102201906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e605e084bf8fdac5f65d4661bcc7488298ef374b9e3ecf8b15e1de03dcc6e8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ITO102201907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae942ec33b3b1fd84bba4de6fd034d339b9a992c375c1f50f08b470b018764e0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ITO102201908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976135e0147b03223790c98ddf78a875d3cf4d6234e25dc522e9b29cfbd390db. 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/ITO102201909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2465ea6bee3a67720c4d036caf925b8d69d06f2dfd040a59b88a168cdd8f021. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITO102201910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe929cfea3772ce1b42d963c18dc307912e4797c2f1393a222fa566307f84842. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITO102201911.
マスキング集中自然音: 周りの雑音を消して集中する環境音, 音をシャットアウトする
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104d2def8928cfe22bea5dc89142e178711ba6f79bbbb140c6ada766276e49cd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITO102213424.
雑音マスキング自然音：集中力高める学習サウンド・騒音除去勉強作業用