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 0x4606dac0626df2abfd777d3903353e55ff47791d8fc379858ee32ae78c659a1c. 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/568f7fbe-2eea-4be0-9bdf-c3fcb69472b3.json and https://artists.proofprofile.net/proofs/artist/568f7fbe-2eea-4be0-9bdf-c3fcb69472b3.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 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 0x591a2909dfb4fbd84ad20d9947e8aadbd3efd91d3a3decb267a93fefedeabfa1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:22Z), 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/JPES09804325.
ビフォー・アフター コンプリート
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a2909dfb4fbd84ad20d9947e8aadbd3efd91d3a3decb267a93fefedeabfa1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPES09804325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef16dd4be0eb67d85aec22d6307962ef0b5eaf74fc6e0c974fde58291d94d1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES00500307.
アニメ「のだめカンタービレ」オリジナル・サウンドトラック
エカテリーナのための協奏曲・ピアノソロヴァージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55031ac974114be83c44aa9d15cd57c91ad30506b5667bc0e5303c5c646f7821. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/JPES00700941.
のだめカンタービレ フィナーレ オールシーズンズ ベスト
アニメ「のだめカンタービレ」巴里編サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69d908cb009940c7802217009ee91d33eed082a6e7bfdb3e83b29f1bdf4b653. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPES00800844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08f6e8f9190ba481f376912bbe4ae8f7ef40dbdc3f07adafe4d25b3eb5cce1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPES00800854.
「ぼくは明日､昨日のきみとデートする」オリジナル･サウンドトラック
映画「君の膵臓をたべたい」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f29d942dc0bf73715880cff7e5391bace415da75b8df3eb464fa953b739fdf. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPWP01771284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b671cd3849ff0ee6b1be37598f73e114a517b3f7cf36ac321ad508e402a4550. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPWP01771286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa462fe2cd36a071c5c921c542a8c6db114e2f6ca068f800e8c5665f46397a6f3. 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/JPWP01771287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299858a22309048659e6a4c4f0eb722c4a99f87f1e90c5c32f3c4c455e7ddc52. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/JPWP01771289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4db821b8ffb181459b12f965e1e36db2c5af7f097824ef1f8630f277103d442. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:20Z), 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/JPWP01771291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8234fd2dbd55e9ae5d722280b9b01c33a1f62087c055ede369f477856fd705. 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/JPWP01771292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade73a72b3ce13cee9672050f828d244e663e9fdffadfede5e25543b7b6d567c. 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/JPWP01771293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06826e5f125c74fb9bc7eecb8936d4354ed134daeb04284ef9e187f768cd7054. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPWP01771294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d28e8fd8b8f5fef19829b9c00fe118a519f509c85d8556516cee95b3f40b0a1. 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/JPWP01771296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0fd3a4a00179a1774487030e39f2d951658746cacd491cb7afc3bbf89f08d5. 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/JPWP01771297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa468711298dd2890a534081871256daeb2e1f3d77f4f37909e48aaede85dc2. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPWP01771301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe869da66c76e36c39647ff186b2af3507600b744986080272eb8c269e4b65018. 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/JPWP01771302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60a6ac7a8a63f14490d29d48204f3a531db2421824d751f906ca72b7da5290. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPWP01771303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfc29df3b1e96a826b095d126eb7bc0715034670abd172ab5b0ec7370e80e64. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPWP01771304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b6487f6b8ec6f6d10ba2d78f13334c049bd765617b5586b13dec01cd4eb0a. 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/JPWP01771305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787df0be136ff3a4562733faa2dcc092bdf42f9cd272f71ff995d59f571288d5. 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/JPWP01771307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69272a0d48591c93b76f83ceeedc4efc67d566163da6965bbb36c87094eebbff. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/JPWP01771308.
「君が心をくれたから」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb22acb3bda90a3c5279ab47012fab4d57a5de74c0c377b3301184cea0ecf15. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPT592410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9821951c31b3766f3afbefaf91c62fd40c5e7c68273d637dfe665850e05a3e64. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:25Z), 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/JPT592410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c04eaf06fa8b734ceb27006edfaab557ea813510e90b8dede1b1ba7023e4bf. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JPT592410022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd66d14aaf89c4c7a3c79a852eef48cfc3207fecb0957b3ac6305bfe072f6b. 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/JPT592410025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da5ea0e0f1768e702d8364ffa1cc8a01122922bde2db5c9b56fd6be8141e9b. 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/JPT592410027.