1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0a7954db17e308a4955e63d649727d96cbb95fef86da6f181ed264366a41e232. 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/7f79ffd1-b9b2-4c58-be36-fca3fbb749a0.json and https://artists.proofprofile.net/proofs/artist/7f79ffd1-b9b2-4c58-be36-fca3fbb749a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
パーフェクト・ウェザーリポート
ナッシング・バット・ア・ガール
トウキョウ・カウンターポイント
エンジョイ・アワー・フリータイム -ある夜のリグレット-
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 → block OTSBitcoinBlock must exist at that height 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 0x09eaca6f30be7b701190bbc0424cbb58e253d1064c26977770b5e904129297fa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:08Z), 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/JPV501800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdcd80d29c1d0beab815242beaf58050db0251032cb5e177225b3b09cc63fbe. 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/JPV502000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd238a56721e4a7f97d0115c5cc4a3c026b233d2e32b1d7bc9f3278b2b138086. 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/JPV502000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e05c07040ac4512576da31de7e9447d168f0af9dce3141114ec403153bad66. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USYBL2302391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01577478fe77f78bae3c6b3c68fa2e9b6d485b00d24fd4cc0ef35d2880f6dd80. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:50Z), 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/USYBL2302392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424c6f99793ac543e4f440337e080a0d020366388f16d519dc2a8a1591e4973. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:38:26Z), 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/USYBL2302394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4786dcb3e5635067b55fcab80bd303698f80fcafd79a26f140771333710ef9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USYBL2302395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91abc59059010918f1eb7bd4f0cb0fcfc8b8c50255f11bf50c88456286dae5a2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCJPA2488070.