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 0x3bd95edf652824dda408c964fb5e34907b95963771677f27fab40e0a35067c85. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02a714f7-b431-48f9-9d18-e675798b661c.json and https://artists.proofprofile.net/proofs/artist/02a714f7-b431-48f9-9d18-e675798b661c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
リラックス・カフェ～ナチュラル・ギター・コレクション
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 0x65f852dc8d9ffd605c4223b5fe16c60cf2f567fbfae622e2a11d6c2676b7107f. 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/JPQ701400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bba83f3037e9d2e13712fa7ca23a13bdb7c6d17d6f406d5c222ff4ef82914d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPQ701400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210675a958734c980874a886382f16b22f9f8e673dc4ad035f85156f4e2b0602. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:20:51Z), 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/JPQ701400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24404a06c9a7856aae4ebb98647cc06206e862dc54272734a5b899f4859fb8a. 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/JPQ701400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaa7dd8a0feef7fb1c002d309ab04d9cbe04182e63cbd97f325307477b4984d. 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/JPQ701400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a2a4373342e1fc693c222149f7c64d70173a664a342f94f82da96801b05239. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPQ701400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf823fa40e01fc63e85999aa90aad32f92f35c7b04ed627be7253958abda77410. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPQ701400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c41a3031ea8c176acd5f81e108ca616dd8edaf022580047756c31ab7a15741. 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/JPQ701400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588964c287fe9ffbe1eb57df3069483f9555d18c1c6b601826cdf8de98b58f31. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPQ701400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5203e7b28aaab54803af2d5ee8ad2b7ac594efaaf9fc2f54cc3c134b80c3ecf5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPQ701400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa14bff2103f75ca3a48ee660e06ff93d43d299d5b8ced6138ac65e10fe09c14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPQ701400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ef0fb7736049413c42072849148092898b0df888ca3161526925d9c5be30f. 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/JPQ701400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ad3e6d9cad1798f05cf0c567847ce4f1358275df1f02b54d14559c0d32f3a0. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/JPQ701400048.
ウィル・ユー・ラヴ・ミー・トゥモロー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6320077214e7c5ead56f949f30c0f3bb249686103a331039be02e79eb706d8b2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPQ701400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4be9d91ded27d7b5fdc462d6c50c6b9ab8a5572b778a81f0e69873d807c020. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPQ701400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba207ee97ebc086e54d2226cb39ac40e67ea711cde4ec31aa87d4c43140109. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPQ701400061.
ニューヨーク・シティ・セレナーデ～「ミスター・アーサー」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89348d10271e6b46e2b96d907f9c2a2bc625b4488a42fb3035d1fb7a78bb679d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPQ701400064.
ステイ・ゴールド～「アウトサイダー」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa321f4522a18611a9c3e4e12502dda36326e18102db03a0bb1466435485d63ed. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:00:57Z), 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/JPQ701400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a0a65d9faa06231c95c1bc9c6091693582772f3544103e4910d6e8a0acae0f. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:32Z), 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/JPQ701400069.
オールウェイズ・ラヴ・ユー～「ボディガード」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c911de6c3a5af9aaced62c5421f699035cee62ee76f4c1389aed6ae1090cf6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPQ701400073.
ミス・ア・シング～「アルマゲドン」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50c2b6378ef665ba2a6ca317500b48f1bf10a409d6e966561a18a1914646ad2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPQ701400076.