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 0x1c33b8ae287a9e5076531f73602a53a18948b0a9ca2b319a8d975ebfd9935c63. 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/d4cf2e32-95be-4b98-8362-72d3b4b0ece3.json and https://artists.proofprofile.net/proofs/artist/d4cf2e32-95be-4b98-8362-72d3b4b0ece3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ロンリー・チャップリン (オリジナル･カラオケ)
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 0xd1c6e0da438378299652e9a0ad51757b060a0124228517d47d14706768415d76. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPTO09429600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc651a8027c234b602607ab1090e013b8b56165fe8a6801c795f42fd7a2cda58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPTE01208940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dad49365097a17ce818f9a5037c10363501e3697d15246b3eb54273d4cc6d4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTE01208950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38d1e0e8b4be38987e1c17985e31c5348056b5d2b8ac938763574bf42641d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPTE01208960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670535c3a50760815bba5924297c80d81f78de87c745d9f9b6bb1b9766eb406. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPTE01208970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83f16ee02b7f61fc52d8c1272151790c9373853c53fd2788f88d467c8244aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPTE01208990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f212afa6615b9d5197fe4bc5bbc403a67d9465ab8639247c63c704aa28acb. 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/JPTE01209020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd187bf41255bf2c8b3c8155571e83f27ca6f76dafdb16a425a1752155aa7fe8a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPTE01209040.
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 0x0c4aee3d3537e7cafb8ba916e9e4bd1b7ace73acd5c928a3da9c7e5cab5151bf. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:45:31Z), 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/JPES08700630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3dee88be909579304d308a74e7f9a0318f9ce69b06088032372750a4a0470. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPES08700640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d400f94627e6e1ee17b9aa2bc64f088955e8bf7e1e5e128a8de4284438b368f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:23Z), 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/JPES08700650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b56b48175f2d79ce5c87bcf9f539f165065603843c0b77026252cf3198df1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPES08700680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa6bfef11b6c37bf14321bca9fc6208b145049a03113bd7db28fa387a92329c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPES08700700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c4f0323f159944676f7492333b87f2f69e3f51a783e91871384faa092d2f37. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPES08700620.
City Hunter Sound Collection Y -Insertion Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd9136177dc614c95cfc648fb72fa1fe41bfccb7c02ad0df2ed8fdcfadfd82. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPES08701370.