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 0x9dfa00323d6b549686ec69ef2423c153ba27940c9ac46af3886fb85bce0c9890. 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/eb9cc21b-72c5-442b-8502-dc6d46b220cf.json and https://artists.proofprofile.net/proofs/artist/eb9cc21b-72c5-442b-8502-dc6d46b220cf.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 0x411f97d779af73cb0a576717c2e9e8ce43421591cf4d0e5469316c7164311faf. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/NLE321801825.
Le Pénitencier - The House of the Rising Sun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd360c6bd677e124d3e744492fef8eb2a9fb28baef2d6fcca53ff411e28c23. 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/FRZ116401680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9ae8769ed4279bcd7326b9ff0af585050d5df6da37649b2ff855acef2f75e1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRZ111000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86a924c524cbf75924043c3fd177a71bc89508291ebdfe0c47c4be8218fe790. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/FRZ116600910.
Concerto de Aranjuez - Aranjuez mon amour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329543b13d3e594bb1f2f761f82d9274a9dffa397a02222d74d35581ec2227ad. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:30Z), 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/FRZ111000283.
ボサ・ノヴァ・ベスト・セレクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac093e138bb7e6d9bbff957a18e77052fc259b774a86324079e9194702c7e21. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:21Z), 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/JPH440700476.
フレールディベール(冬の華)(東映映画「冬の華」より )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c4ba08bdc6137716f2ce1d7f5e47cf169adbac346d557908db5a6454ff4cd8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/JPH440700774.
さすらいの唄(朝日放送「必殺必中・仕事屋家業」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329d6161acc142b898898703b2d098100a276dee0c9d3abd9b7b7bdc1fe38d5. 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/JPH440700723.
戦士の休息(角川映画「人間の証明」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e96728bf2267e4e74f5569adbbe760c17eb4b723b355a439eacdcd2a58fb78. 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/JPH440700776.
だれかが風の中で(フジテレビ系「木枯し紋次郎」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2aa75b1f06dce5e071941b97493572657307bf5e7aedf878849c149a6fe784. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:05Z), 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/JPH440700760.
千の風になって(フジテレビ系「千の風になって ドラマスペシャル」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875910fe3efb22e836ddbf0168bb657a9ddc946a5aac2587fc2a6e13a59d8c9e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPH440900979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696898ea46092cdf94372e47faad2dd673f4dab506d79e8e23a63c9cdcff7abd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPH440900977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ec75792b737dc578944a933461ae15d2bf2ccc92a6a7ff1bef2c53686d3205. 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/JPH440700423.
カヴァティーナ(「ディア・ハンター」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51191150a04ced2113b4cc7e9f2e75da158e060241a73dd2e0247e8cec81b58. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:20Z), 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/JPH440900975.
クロード・チアリ:想い出のJメロディ/京都から博多まで
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07278ec3cae8e82c28e783cdda732350ffa17a7b4b30e2a3b1c19122e3788fc8. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JPH440700721.
クロード・チアリ:想い出のJメロディ/よこはま・たそがれ
クロード・チアリ:想い出のJポップス/ちょっと待って下さい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d6ad36946e1fd14fd4949f3c0c78e5f919b0eb382833f9f0b754856571b8ae. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPH440700751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d3258bd1b7767b2787fe601f2b83ff773b8ea16e57ed8d59519607aea0fa3b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPH440700652.
クロード・チアリ:想い出のJポップス/20歳のめぐり逢い
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc40da154dd307a5307d1c6671f1961d9bcaacd278317089ded33219062a1eb6. 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/JPH440700747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be7e02222ba48ce55b6a0fbfeb33dfb893ab616d7d034b2b25d44e6af453c3. 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/JPH440700744.
クロード・チアリ/雨あがりの恋人たち
クロード・チアリ/ロック・ユア・ベイビー
Oriental Guitar - Turkish & Arabic Instrumental Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f655a114a296149b7ade0c33d4b4ccc8827f06cd621b86f45bad2386e8127d7. 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/GRHR10636613.