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 0x19852a2884d3384ad574b5278faac75f43240e7bb6b20f62002038bfe63b740a. 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/038e2bfe-1590-4223-9477-431746eab778.json and https://artists.proofprofile.net/proofs/artist/038e2bfe-1590-4223-9477-431746eab778.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 0x8cc9cea872c50041c5f8486827d158d39c53bb61e45de2d52f1a679d5b5940be. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/COC017510500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49fa8ea3b971b0b8b832fd415b2fe401377c56521075b1c6e7c9e61b0711cff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/COC017510503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f7a92abb312ab75940979ed6ce308334173df4bea965f9c22dbd65cd04bba8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COC017510501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa167a95ce88bc13f1d29e10782ae2a47f0f42511beebbfe4a565f7b5a145667c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/COC017510219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dbe5838a26efaca75534a0f8330401d24ff1ef448be2ff3d360014da3be7af. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/COC017510227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00b5713a178ff4ab7259bfa6fc6ce6ce3fa3824adb194438d82cde7d0a427a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/COC017510228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcebed5a3d0162439d22804a98f334aba67ba25a219bc190e5633e5a2bbbc3fb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/COC017510221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a67578ba53706c140bae80d33eda276884775be16c0d0462c86a86237ae88a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COC017510217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dbe6f7a85c083889684fac61e07ea6d41232fc7ae3c5e85650f955c7b542b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/COC017811461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d52d8f09d59822975b8f0202d9d9d155f29a15a755c133a1b9e61126b2305. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COC019522154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaca54fc71e8d2feb9d48d0ef83e2935996c8f8a1b71c35d86b9761abf4f179b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/COC019522156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd22baf65cd587c24738e8ecbdae9e5cd0e9aa61a8540a8930981a5b0454fc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:04Z), 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/COC019522157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3236e298298fa55e5d56b9fc12c9ffc81faaadf1992370ec85fa1ff630b934a2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/COC019622604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43aa856db4f2f5a0e2d457a85e95154d5cd422d5329cb3a99c9312e4f2aecb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/COC019622603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88aa1b3cb1ebf7699f472efc825087e8441f4c62bf6fbd15fe2e5c3f24c318. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/COC019622598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f165cd3b9226ef3759e612fe1b6178f5e63613200c65100bebe05e2af4d85b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/COC019623011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960270bd8cccf38e2761471cd16decc93c5fcb3d8a502e9f32fe607999887446. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/COC019623020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fbb1bcc6c5d020336d00aee9529ce50e33f76f8b20f0a0b3a17c432d827057. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/COC019823377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df632b6fdc1ce59b4d52958808b27839bc31d25a9087da52a89831eb81239cd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COC019823379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0979f47f34285ea8efdb72c05e5ab0ae0d4bd67c8485d82ceab3cc928de8d349. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/COC019823382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785decc3a0680062b32b1418ce1071a5eb2a631df57712aa5685275845883f18. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/COC019823383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff2e1b0badf5f478c451baa5371f4b0af947ae33ba3852b9926ace839fdbcf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/COC019823723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8b4d89da8037543dff73c83a9b39754b47c38787950b10bbef2cdfb2040c8a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/COC010426829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b2c46a9cd0ec664a7f3648d01db0d3f236819b75a2ee057c6633eee7c148ad. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COC010426832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa32c4cc6dfab8058ae11506a35202c06ae61c29a0ce21f58555d201f532f995. 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/COC012237286.