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 0x7e85244b0f9ed4d0862a0e5047a07727eafa73527c6265f2b14f978fe2c6bb03. 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/150dd4b4-0706-4d51-a06e-c156e2d3937b.json and https://artists.proofprofile.net/proofs/artist/150dd4b4-0706-4d51-a06e-c156e2d3937b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
決定盤!!「サム・テイラー 映画音楽」ベスト
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 0xb41947ff857189a9f992b9382102502b37032844e903d4fd87e3895031f54c4e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPPC07250064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfc093892bd5ddfd5a164822e4deb4680f6ef6a3cf2b57000bfdb8f79772b1e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPPC07250078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6441422b1b827208c71e500a75f097acd8801441993559ccca493138e33c6d. 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/JPPC07250065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2546aef58ed4ccfa71007dd6b27a2e8dd2e3394caabf69dc0e4ea23fb3c4c323. 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/JPPC07050035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892be8739c63702e70e0c8fdcfc0b7e3bb1b02dd65c25c237035becb9fe25c5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPPC07250070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c52a88657d48d2620d2fc67acffe74181b3286deeb97a1aa17bdbb267813b6. 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/JPPC07250072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eddeb4a9bc7ef08efb54af54c890c438d98612d27280a83fe0973fcc679eb7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/JPPC00801560.
決定盤!!「サム・テイラー ポピュラー」ベスト (インスト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb218bce247e14c86caf63b67a86f88de0fdce8c82b2923b7969143293870b5d3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPPC07050115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299f9837137edb0a91e3e25c05fc51d9d88c01743bcccefdbc81f88b4a62d599. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPPC07050116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a823acc237400f888b9416160986cc70f723e8756f955abb6b5e4de072b134c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPPC07050119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31092b810b236007f37fbd535665db30a443515b065da53fe69874f625a1e71d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPPC07050123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa23797741f0c35e725709957fe86e77f4fb232e577d1dfced12151331bea3d. 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/JPPC07250148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54abda92ab1cfb1e4832322f259bda17ac1e6ccecccd856733e2ce133302e34. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPPC00801569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfd6bdb6829f9a4a2e15065bfb6224c497b9c803b79ebaf0c95cd7d95a3e58c. 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/JPPC07250074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f12a267e1577b3763f8d7f8f984c4ff22279125b658dd9d29b0088f2dd7bd0. 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/JPPC07950850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c5696c6d7d59913b81b37814ba2298f67f641c5672d2be028d1a0237883371. 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/JPPC07950862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96025b0099d2862ce780cdca9c2c693643cd0606583871cc63521fa3985466a0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPPC07950745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f13b76db88a96a10872dbebae922f9ec2f7290c9cc9737cb3eb3cd3020796d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPPC07950845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875e9b5e85b1f114f7ca881fd3519aaa8dfcb75070a8f103499223fe310eb48. 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/JPPC07150195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0be1367a22ef761bf73e3d7cc3e6aa14ccbf24d69e451bcf70784f191726bc1. 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/JPPC07950736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17cf076dd6527e8df1b5d35d1639e7fb53f0f589e56735fe466fa39ca12136. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPPC07950851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af8011e622257e0227aac723f33a3026650b346d1b58b9a7a8fba39b1b2e099. 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/JPPC07950740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097f541995883a26951430b43c5267fc52e289f9c43c621dc4b779f7022bdf6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA41979367.