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 0x76f2c847baa1fc80e89f1a7fa2ce24fc58074dda51be1a9e1e2e56e4a5471510. 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/645c6016-5952-4a54-aae0-aed6c2e7b944.json and https://artists.proofprofile.net/proofs/artist/645c6016-5952-4a54-aae0-aed6c2e7b944.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
レム睡眠 - リラクゼーション, 自然, 抗 ストレス, 瞑想, 眠れる曲, 静けさ, ベビー ミュージック
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 0x74c2c0d37a9e30f2f5cbb8842ec990978080a5993a0ad782ed01ca96dd778257. 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/PL0651703324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f77cdf1eda6e54116e44f20eaf99a0279d86b35192f21d941e2de5887f117. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PL0651703327.
周波数 せせらぎと野鳥のさえずり 海と波の音
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa26450f1c1245357257ec4ac1b4b07413070402af2ecd4b80fb57211793c66. 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/DKD3Z0001600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd512d1545ee36f86da8eb6e49c2213910913604c8a1132e0d5055d365128ed8. 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/DKD3Z0001601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fda49071f87cb5b2af7ced3fe77cc41c7a5adbdd4d75ccbb586de933be0a03d. 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/DKD3Z0001602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2655cf27fb30fdec830cc16614a2056282f60774210eb50092337c48dbd676. 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/DKD3Z0001603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632debc30125690b6726bd5b31b7dfebbcc5a8f19d898f5f0729b2605345629f. 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/DKD3Z0001604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b42d7c7baacd3192f4e80be27913696f8e789e81f85e7fea659b7596ebf9ea9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DKD3Z0001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca72366de498d6d8a2f7f65b9c737525b263522f5c63645bbc1e40321cd4837. 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/DKD3Z0001618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927fb401ff0a1e230c37a2819b36d64fd129121de42eec6e94541d0c7fc0bad8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DKD3Z0001619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aadabfd368e3b7cb5aa6d94143f1f5c4e8d9c658fefcf40b2bd1cf903ff052. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/DKD3Z0001624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0571615f49a2e1e593f446ff004b8bed2f10bba0ed2e34c3b00eb9072ff4c9. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZRP42356755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e409515c7c5d5326c65e46b10203267e0a0319f54f3e2121813cd3fa3408820. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZRP42356756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8c102532f106b3eb946d8466ba3ba02b501ed8edd978913670dbf2d958d68c. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZRP42356757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613261b3eb36650f03cf08b515bedd4fae2e2f465c18e1dbcdb21dc03eb2431. 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/QZRP42356758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2de32935738177a3de97a6f48f08c902be4751b0733ca9f913f279f6ed4ef3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFM2351125.