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 0x18ac132ed8dcf8cda70d5d4afd7c18c9c77b15f2b60766e3a8d07d49f4313f52. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8548a0b9-0944-4172-b30a-6930b2db64c6.json and https://artists.proofprofile.net/proofs/artist/8548a0b9-0944-4172-b30a-6930b2db64c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
和風のリラックスBGM -箏や尺八、三味線などの生演奏-
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 0x5654d19dfb33ea9ae0ea692dd280e1df13d93873b4877c6b6d57feb9f3caf934. 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/JPW791900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50250c2c9a60c3b5336fa11c9e157e42645eb7d2867d2ece3cdec15499a8347. 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/JPW791900008.
モチベーションが高まるBGM -仕事や勉強に集中、元気が出る生演奏-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc014d1a7600f6de64e893a0f40ae0d447c15f2bfbd1cd5c7c2e527d0945b2. 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/JPW791900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe853f683459d2d502e30cf8021671596d86e6013024b77f127174b06068f1. 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/JPW791900117.
癒し効果のある和風BGM -箏や尺八、三味線などの落ち着いた音楽-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050442f5bedba3d108c4a0f09a394696858cfb73c7edb42c30c1b257d6d16c4. 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/JPW792000009.
仕事が捗るテレワーク用BGMヒッツ -奏-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc014d1a7600f6de64e893a0f40ae0d447c15f2bfbd1cd5c7c2e527d0945b2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW791900115.
モチベーションを高めて仕事に集中 -勉強や作業がはかどるBGM-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2774ab563c429cbf3d0908bc3a6e8fddc1f3b732560857e2a71baf62d6171506. 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/JPW792000566.
雄大な自然を感じるオリエンタルミュージックBGM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050442f5bedba3d108c4a0f09a394696858cfb73c7edb42c30c1b257d6d16c4. 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/JPW792000009.