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 0x8868514f38bde1291067b628827692cc8c06182709e1eae79fd55aecc7622a71. 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/8a494be3-795c-4e93-99ba-3bca216d400a.json and https://artists.proofprofile.net/proofs/artist/8a494be3-795c-4e93-99ba-3bca216d400a.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 0xccf1a4e08d765e5c79b933e106e0765264b7fdf3f30bec87ecf2ec594c0ddde8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBLFP1889010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ed536b49e4aaf109efeb25cd3ae6909b18341c7aafa2c9c637f685fe11445. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GBLFP1971958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e9d69034b5233b59d0239e9b50eed83a2dd109636519c54e29bd7ad2186f22. 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/GBLFP1971957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b6c59d1965adbaa4ca1bf683a6dcf8b2725d208b063bd93094c609beae4112. 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/GBLFP1971956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a61fd205dd2275e6516c2a42fe51bf347450516bf6c897879758bddf63f1abd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP1971960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069ab44d608b4ac7381a8cd0348a4c07b720009957455bcef2f820b47dcc30d. 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/GBMA22038676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04be6d0b0bf246d2a45f564c80b0eddef4bb6d5f5e944cf87f06e8bd81c9ebba. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBMA22063452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc651726cfd586d7473e8225f23277ba2ed0059ae367645cee7dfdd40f46478. 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/UKXN22065994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9143b35325e43ad5dbbd87d0335e4762ce8159ec91492627914f9ad86c3ef54. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKXN21967108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6610eda6badb51a8b7a2fc3c9c2520caf3e918ee533c0ab3f49a92fce6d773a4. 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/UKXN21967109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb872167dd9927b2924237a6f05b2ec22d71eb960b89a355dc1280c9e1a2004c. 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/UKXN21967136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd163fafdddd76c84b38ff03e5122b25fd9fab75d03ee19d0e6960bf92c3b8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBLFP2149965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9753f702633f37e9b1dd2f35b587ca1784b57b570079da08cd5938aee22c559c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBMA22122828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41ca3f338ac4441b3bc2c5c16cf24dc6dd3c9ecda3b1ccb9ae2335d8e538f01. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:36Z), 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/GX53U2054263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1507860029a3bf4826d8b54b26f1410f1cedb7c1ab685a15aa478b30f35f94. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBLFP2293024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddbda427e383e5672dee9cb7943d037d7b5af4bb065b5ac0ca686d8b2785c04. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKXN22236659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebff97b5cc083d2b6421b8c6a27e343ffa05512509f92884c057523330e98c9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:24Z), 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/GX3Q92318883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544b9ab699c3a418db05cd36f0770877f952a5af599cde0db22ac23f3618bcb2. 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/GX3Q92318894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd411eb6e51c84680664c7d59e49e90815b52e707785f851fc742dd61b98666. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:24:53Z), 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/GX3Q92318893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66123bf7fe57b1838a2e184094b78c2c6920981c29d096f2945d05117e1f3558. 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/GX3Q92318886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1507860029a3bf4826d8b54b26f1410f1cedb7c1ab685a15aa478b30f35f94. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLFP2293024.