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 0x73d361bfa23e556e8183f5f39d26b98b039b7d2013f6c813b1caddbf0c5daad9. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40062051-42e6-4183-a4b7-8664a7e3b522.json and https://artists.proofprofile.net/proofs/artist/40062051-42e6-4183-a4b7-8664a7e3b522.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 0xe647954c343f605c70302b77f3c37b2ae0478504fc9768345ba2ae9681a508be. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS307300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97f266c178cb59469423ddcf27b2cebb5aa8a92f9322d114602636f2f92b541. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPS307300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8006d110cbabb6c148b36fc08c3f8ce2f38716f73723d446f6b12c82ceb3b44e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPS307300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70e2dcaa8454c4f813a555c119e89ca22f7025bedcfe2e4c1979a66e3431640. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPS307300026.
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 0x9040b7a826dda64cb1408f9ec880589b9778fbeaacdf7fb9e3cf4d2edbadfeb5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPS307300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09effafb04ebdc33604718ce87d1c186b40e3c26a89a271e62c735b1cb4f4c20. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPS307300029.
トーキング自動車レースブルース
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55d78049a2e6ed5d86fe1d82edbd465863fb6fd4549220a32167dc9c064b6a4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPS307300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd862c19072f4d8436e51b75a9ba5b7e390e8f71ccef557eb465c8824a180aa05. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPS307300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08349cc9ecef7d03626c6daed775822346c13cce5f49b1c4272a0ef3a27ba4c. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/JPS307300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03332019c2630b6f33984d9db9fd0b36f1106d103a16836ccab9c97ff1056b95. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPS307300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422803d79dae6c7c1e721a3b4bd79ff6b4ac4970fb65f0d25dd96ea6cb2d51ad. 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/JPS307200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13979931ccdabaf30d387242b0ee0c68d08b4d7bf73361e2d0f710c3baebe1d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPS307200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd6fedf1e59df2cd2728e58ad0ab021ee1ff02443710bab0856a405632a6e86. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPS307200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78ac16bfc149845f5d42fcffdbf119c33c5b6ceb4d678b559805b122c65af5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPS307200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b269ef5bb3bae8bb49bc464032eba3f2311a3b1d49bb56ca0d467c2f6e7abf5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPS307200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592ee26b270e3bc23a8c093f82a79466de86ae71edc759ab20e6273c17a97a74. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPS307200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6740eafef28d3e54cbbedc45ebb2c5ba5066d15f12020f0eb7d1e7457b79b61. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPS307200067.