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 0x3f0fc243c07a632a2b2c2252fabd905bc1f44b63958154e61fae034cdd45acd1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e02e8ad5-90f9-4780-8ba4-d3bcfed00c2a.json and https://artists.proofprofile.net/proofs/artist/e02e8ad5-90f9-4780-8ba4-d3bcfed00c2a.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 0xb5f1c6bc3df9fe4fc8d50c0896fed62142d3888113e82de5aa4fbea1ec3e1d73. 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/JPKI00308870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efdf5b626a012fb41570bd15cddca90ca597929612bda684b2dac53520ae838. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:56Z), 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/JPKI00406303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3be11256df11524bcbe75fdf39cddedc1ae3bd1c79cec2165fe6b6c435a43. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPKI00408702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b566f9b89b8afe1e189844af2ef820030dc6c21c6e2dcc6bc2c5abc0f4c123. 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/JPKI01115406.
椎名佐千子が贈る 昭和歌謡名曲カバー集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf41e71337315c3443fe104e83f0f45963f6f0e1169ee2a47595816153af3a7b. 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/JPKI01313712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0344ff285e8aeadc1c05525e16ad67bc5d209098325fa26d321641cbefc12. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPKI01313713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499c5e4649f00e462ce6b39044154e72e1c0c1c2ab8ff6a38b745cd368751ad2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPKI01313714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8526729e0aa724d22b3d3726ed440ecc6f4ea2d912f19819c62099c6f5b14518. 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/JPKI01416234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4321f006aadbef3b201e3db2a421004a36b58ca2767a1a010a37ebfb22d6d4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:04:00Z), 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/JPKI01610909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361ab1632b5f992d1001fbc7c330883b61f2123b9a1f96b3119a0691dcdf81a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPKI01610910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236074c6efe6ee1d9bb404ece4ae39eca31d815279f2a2584059db78e5cf130c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:28:32Z), 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/JPKI01719846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9022e2287700be6540eb60e212d80e233bc2be4c1897bfaf6e1e0536b100d70. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI01821288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa409a4e3bb1b471a82d6cdfc6784a2b7f7a82d8c45e12257ff9e71190203ff1f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:30Z), 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/JPKI01821287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9685ea06a857ef32769db323f0f39e5bb0a183b39a42aa6b8789a8c3383b5a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPKI02016358.
椎名佐千子20周年コンサート 20年目の一歩～感謝をこめて～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84efb8d54c275fd5215d1d6f56b15f0b8a052a0049e3aa4a371bf6aa65bbd649. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPKI02210982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c0924a5a29e7ef3b0c3b059e4c7f17d78d8d32e965fb3688935c515fb0bea. 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/JPKI02016357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a4895a7919204e507a4c7c9ceacc6ad0118895c5eeaf32da54f428e5efa83e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:36:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI01513643.
いごっそ海流/カサブランカホテル/マイホームタウン
よされ女節/恋に焦がれて 甲州街道/冬来たりなば 春遠からじ