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 0x1c956692c9cdd712faec0c3a281a361369e9ee72ad0e60d68eb883032ff66883. 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/cf2ffe9b-7798-48fe-b1c3-11145b6ccd42.json and https://artists.proofprofile.net/proofs/artist/cf2ffe9b-7798-48fe-b1c3-11145b6ccd42.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 0x2499e259f613b9c5d3e99c91b25fd67de613e1a1613a66e90c386a68271d65c4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPG101102107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8851c3875869c71640af0ffefa11c6fec0d9386cfefc8d740f43ba23c8873475. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPG101102108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e5ca79b62bee35a166be1143a265926c9b6b67b9df86f2031fa54740f615db. 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/JPG101102109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56eabf2a2473eb0fd0c48c68c55bec7b1ae39b78c0447e614ca2d6845cc72a. 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/JPB641500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbedc66d87fcf0dbb42b4b29e68c947fbc654c5cb00f494406efa012cac5a22f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPB641500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edfcc1e65ce8a2f742ec62b3fed113afa8cae1f24d8224d86e4ed32663bc846. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPB641500300.
映画「ナミヤ雑貨店の奇蹟」 (オリジナル・サウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fcc96045ea967917c8ad31a23560e528e8edece5b59875e220716e430985e0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QM6MZ1913045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78564d98cd8b5237c413d2a5f289b542d50c93938b8c5818f602baedf860847a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1913046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25976d217a8f43e6caeea1bfc983048e78ec50630b4a4b4b08a6cd0f238601a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ1913048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174c6b2d3e0574a346b43b65b79f1c14c5c85439ef1545dc2afb9aaaf17ac77. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6MZ1913052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb166168fac9b124ce0ac4e6f7b090424b720bc766dec4fafd1fbb849395e0f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM6MZ1913055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8bf8d598e4d061388cd2ccf2f348b2e843a4adfd774615942f13d9f8bb27e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6MZ1913067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb1991928565098f0c5b29a794eec8e9642a174f9df602ac8dc6ef449a793c0. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QM6MZ1913070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c783531b87da60a7b5df41411407b88a70b4b1305053b139619c322d95e06e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:39:50Z), 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/QM4TX2310648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb364ea82a1dc791b1f21cb722c03a30dacdb7ee9822794c58b7d2c88f6f0d26c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7282305591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ed459f4e8a7fe159d8bfe17075a8e93e3da1c84dde56a711faafbe7392c798. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA72393862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16513b23be344c0822b43dc1e59c52fc0a215ae940218caf157208cab7fbdb53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB641800096.