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 0x5a3c3f8383477593e1af83de7f6775b4c34af608b8a005bb3dc74d78d44ac3c4. 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/deb40d0e-2ba4-43bd-aad5-60ee77045c12.json and https://artists.proofprofile.net/proofs/artist/deb40d0e-2ba4-43bd-aad5-60ee77045c12.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 0xd79142b4c07b1f565f5528ee98e6263b4517f7063f2312e325530f8340512a43. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPAL00600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e6d87861a38c38d80f63eeb4a14869586bcc197cdeae695d655db3445b3a7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:23Z), 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/JPAL00600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a350b4e0b4c8113fa038f567c15921cee6101d0c6ebd0e95dbdfa9c889c4f9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPAL00600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc967e6608026dadf90145b2def97bf6e1ac853aebf1fbb5a693705640148bcc1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPAL00600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d89f672096f8e0c65146e4bca11bfd329b2bf6c4cdcb95ba525f7ae03a254da. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:15Z), 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/JPAL00600520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086eaba11ecbf749467a29d10f91900d45faa696b1de7d6fbae09524d1814fef. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:00Z), 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/JPAL00600430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d787ca7725072edffa1f8053223127c2979c72a6e31f201cb71f423fe7ff2af. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPAL00600690.
フォーク歌年鑑1972Vol.2-フォーク＆ニューミュージック大全集⑨-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05029d7e902cfb1bdcd179d39becb94674d2aac1c7efbaec2674e7a2dedf3f39. 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/JPAL00600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6c794224a3b405d5ced8b5c91e52636b4a44730da9d8ec5b3cc824ffa66957. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:25Z), 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/JPAL00600170.