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 0xa99df787ff354101bc9c7e8642443a7996d45ab04d201beed0b4eb8135d5aef5. 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/1b8071d7-fca2-4b2a-b1fa-d4b71410517b.json and https://artists.proofprofile.net/proofs/artist/1b8071d7-fca2-4b2a-b1fa-d4b71410517b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd75c62e5354df5643319c3f2b6056f95c52ef3f9a6d8538e019cd4cc27df6b4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:53Z), 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/TCJPJ1909936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc95a9c74847267b606c87ee6245181a8c3194c39884bf9cb09a0a8cb9ea21db. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPP701303297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28386d6a02b25ca9df26cb878b213b5cc40485763c6ea3fe7b989ecff7549b1b. 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/JPP701303299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27558fb0a9d0c4e509a570f6d6ca0242765e47d4edf1eeb335226ecb256ab802. 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/JPP701303304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268c468bdd7f3a36b458ea1df31c49644f41d92ed074d1b637c8475e1c4e3715. 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/JPP701504360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdbc03b0210daaae330d31010c6b3c7a2e9d6df96745f8cf387b160677490ab. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:50:54Z), 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/JPP701504367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335909c94493b5f743ab48b302d814b24f6c11fb1293e505c046fdafc4371ed9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPJ901612170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa3b41d7b5fee181b8debc36ac5c5fea65aa20fefdde79949c9782756fb41db. 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/JPJ901612200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd872abd38d76d6307dcdd74f4ba1a0af34566846b9bf4f093340aa26e85a3f. 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/JPJ901617260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed66fb4dc95f80d65eade29e5bfa3c633f006f815e8267e191f562564fee25bf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPJ1914983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b49911f41b5e537046567130213ef89491599757526f28890845163b5396a1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPZ921906674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163dc338bebb60a56f5c673ce7251c874f180bd68626154ea300cb0887c5928. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPZ921906675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780267221f37956367b88940fc8e48d593b030b215dee8f7ad1ac75546d1abc6. 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/JPZ921906677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a9e44fbb2ebbf01de0b9186302482f488899d035e674cc014a97aa211e92c1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPZ921906683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b49911f41b5e537046567130213ef89491599757526f28890845163b5396a1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPZ921906674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163dc338bebb60a56f5c673ce7251c874f180bd68626154ea300cb0887c5928. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPZ921906675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4213ed4c99d884303297065140fff649e8d47a8a449abd141ec9cf3bb1321d71. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPZ921906681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a9e44fbb2ebbf01de0b9186302482f488899d035e674cc014a97aa211e92c1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPZ921906683.
いのち（TOSHIKI HAYASHI (%C) remix） [feat. ラブリーサマーちゃん]
LIFE (TOSHIKI HAYASHI (%C) remix) [feat. LOVELYSUMMERCHAN]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e3ee46d30306e367d510b62affc23add4d9a1b1762da435db3a8bb49f009a. 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/JPS802351842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897ed3480069102a470b6a9849c98bc0c1a1fe818359ddd3cdd73e16e0ea0ac5. 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/JPB602000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4fd98dc520e355d3328f6756c86e966d5ec968a98803c7aa2c8f202d03644. 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/TCJPG1735195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5237d90224a6d1fc10c37206f9700756a0e4e7159190e9e30fb072ffce6c47ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI01404940.