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 0x3d8854e2f04f72b05f8b0eb672cdf5f8e7558b527c1bc06363fdf021728833a3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63dd822d-7f32-4689-b5ae-1e4dc394e968.json and https://artists.proofprofile.net/proofs/artist/63dd822d-7f32-4689-b5ae-1e4dc394e968.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 0xef7e85cb9d74eef550841555a98badf008fcacf81fa600f3297a285804a7655a. 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/JPB602400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb903394679332397e821a3bb28f7d88ff576366c31166831d939b64ffa33a8ad. 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/JPB602400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63994e16895b2bc6607c8b8999ec5426902de8e3dbb97230ba5798b44eb0519. 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/JPB602400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8192ca7ad650c770a1b21d42ccbdc4735acc64dca25d0245a5ee2876df6b8. 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/JPB602304757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097e0ebcb7eb5617ed4492f9b95b22c5b92075f969996c0ce5f47591186fc69a. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/JPB602400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3571ee0bdab9532a32a2ab771a93a6d8c2017dcda95eaaf1963bc2168d97f30. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPB602400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc45d6df8d14ba03c748b2274a6aa0b820aba7b5cb7d14237f552ecad40137. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPB602400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91810983bf26a2d7c19c4d490fa40743485f50574a8852092a2a220929de23f1. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPB602400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d7a5981b8ad7b2aa6373a6e4dfca529e5cba399dac3748a973f60098db589e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPB602400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98e76db8d4c6803899e6b7b733a0546a6e94c21abfa28cf0c84ab969c0b7d8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPB602400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8192ca7ad650c770a1b21d42ccbdc4735acc64dca25d0245a5ee2876df6b8. 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/JPB602304757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659e07380ca226c9d2443476334f3705a7c7a2c9935ca5009d5ababbab59366a. 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/JPB602301149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c89546f702b7a2361dc9e6ab31128cc28e1d2a53be187bf2e27871287f8968f. 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/JPB602301151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb1553db906a968df3d2ff72da915270f205a6b5b2598b97022bd4400e86a4c. 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/JPB602204294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43749fac1dc88801b2e6c2a9d7f65b5ac0599a20730fda733e972983960260a. 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/JPB602201062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e75d51611224a9afc3f5dfdc9d1af825ab6fe3489e64d13c76ef5dedc6217dc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPB602102275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742bc217222937c4fc0f3bfee9236466b30942edb20e2168140bf3c4a9dfbb0a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPB602104259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffacabf0241e2a6bc8bb1b96254b0c441491a3bb4d9b16734c5a3dee447a4b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPB602102274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b043e4197a69fbc9feb73f5d95480da812d06758e7d86331f5faabb9718790. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPB602102047.