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 0x6eb508cdc16e36b46bfe790cb7a920776cec21ec8da675936151ddbbcf551b54. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b3562c-0c02-4a23-b840-a54ea9ef4dea.json and https://artists.proofprofile.net/proofs/artist/65b3562c-0c02-4a23-b840-a54ea9ef4dea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
『ティファニーで朝食を』より ムーンリバー
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 0xaa60076ba1f6839c7399a434319e8e9305556a2c1e145d30f3b8b7f070483018. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM7282398560.
ニュー・シネマ・パラダイス (2023年改訂版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c70f2d9f52da022ade1be5d30e72e0645e2d75787121c43cf35f05ba587a9f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM7282398561.
花のワルツ バレエ組曲「くるみ割り人形」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d671e398e2ac2fc04d312c3fa115d2ba9c800e79c5ce08754ca3ffff2a44155. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:38Z), 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/QM7282450293.
インテルメッツォ Op.118-2 イ長調 「6つの小品」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5692b03b0a0673d4a9b1bc5119e6a2a1cac3255c815a8154c03d0530b866d1e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM7282450507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6627529efc07f8924d1223a9cc5f8a7e6626f0371119d090b494027384e0dac. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:44Z), 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/QM7282450508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f58daf498b814815f308e5626fc106b6d7ce5f26cf5cf5f98c18dc8eec35024. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QM7282450571.
チム・チム・チェリー ミュージカル「メリー・ポピンズ」より
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277465ca6d2d4d8fec485f674050adddbed19301d2b1f76ed2e32397441a35e. 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/QM7282450605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089453e999e1e619726741b15dad23ff75b2316ccabcd40a66ba28f590027770. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:27:18Z), 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/QM7282450602.