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 0xc820b3534b15c24b357d47f599e1ad262466be856d97a3ec5427d944de117aa9. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e442db8f-2bb7-4a06-af17-5fd03fea3182.json and https://artists.proofprofile.net/proofs/artist/e442db8f-2bb7-4a06-af17-5fd03fea3182.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 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 0x00201269b8d9eeda9f532cfffc86d61cacf86ee8d19c6ae6243491d90dade737. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPZ921911853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae88e20d3d15ce1355cc178c4ee43490d3c914ab1a2644a7357bc2e94975196. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPZ921911854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b3566da09409c9700838f78a2754758c806e7763744532819dd44df069a67. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPZ921911855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6067e09ed537085b3f30b44ebc7bab79125f0afa74e58f9e67fe5a82084084. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPZ921911856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042dc4cf0bf83b172be34cf3c87a3dc12b182519c44d343fe5642dbc8bb8b8c. 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/JPZ921911857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61987e1e00ad07be4ce1272d10b8a146439d138fe2eec84f6ad0754f0be1d8d0. 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/JPZ921911858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72429d9cc67f9ab03570f31ed6fcbdc0b7942227788a87237c43c4f5c295fd80. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPS801851067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a0c4bb0da0f0d8912429764fbfaf7dd976778588706ab6c9c4197540d2cea. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/JPS801851068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f095f1a40542524bff8059eb77e0ccf487a3f99cc593d1637d63bb8369960fd. 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/JPS801851069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb33df4a68229023605aab2a7a848f26dae833569194b6d1d7c93cee3d923636. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/JPS801851070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eea7ac1adf45340a85c928c5e4c29f715dcb6a53e59926eb9c4d8da2d064d5. 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/JPS801851071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f1d9c183a912c7fd9b1c6255a2b3507ab7a4c84ece02bd867b9053c490ccf. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPS801851072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19cf05f03dcc259d6ecad3cc172a54003aba65a55d0df62c45d894610733d82. 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/JPS801851073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f4d1eb00be083d342d4e95bde820d2b339c34736c0576b3fab7a175433752. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPS801851074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56570b58eb68242abbb23390216115ecd917e9b711507dcd6680098e641d7de9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPN2157559.
ロケットボーイズラストスタンド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2a051b22b1cc8bfd63d188d697ca910c67e5dea10470a7af0f65c8d11a247f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPS801856537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8e1b1ac87c95e61c50e98e1c49048922cea1e754e1a2dfb7684522c9eb81e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPS801856531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867958f79bef3b34f1b2cc972224c8bb8843639c858fc264522bed7060f7294. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPS801856524.