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 0x0666845f9ec6116bffe6af49e1ec1653c11dfd982053e556821eaddb09203559. 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/2ece9785-342a-44c5-95ab-0a15412ade03.json and https://artists.proofprofile.net/proofs/artist/2ece9785-342a-44c5-95ab-0a15412ade03.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 0x6777dcfac12c7a71acc85afe46a26eab54f9f01fc31746cb55018c194412722b. 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/ESA011931077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf6ce6c39064b1a92cfa90203954c34c7adc333846f4f1314cfbeaa8e4f4a3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ESA011931078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6d08d0b3983790ce1bb965e5a40447ec28e9c57d74698c6b12d6426094ed8e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA011931079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63d7a1402fc812968e35a6eb92dc3ef008f9ea3686fb2db2b87043735cf27b7. 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/ESA011931080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb32ca27c27d0848dd596857a3e94cb6be10725464bef3c70d222aedc05a6a42. 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/ESA011931082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4a489375e7aba877304d4bf394b81c38b229966c68da5e6e8c7ae46265009. 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/ESA011985409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ac42bf60cfa2017780cfd7041f3e475bdae66362c3b60ac805d1fd1f8bd246. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA012124038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b132301f96a2efbb7790fef34a91c6cbf82d74ef5191c316aff28e1136fa5b7. 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/ESA012124040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723c7d8b75f909030904541c709cfd9bacf4e5175b4355d3d092c8e4c620c8d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA012124041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9efef679f14938970fdb3f89e9ae0ef28d8a61e066299a261ed4034d6bc609. 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/ESA012218383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe546d7d42a9ec1bc28973a664526c4d1753f1a624e509857968df59235febe7e. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:33:31Z), 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/ESA012259164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e45fc960da865e71847e7c2c38f7f9d1e7b8ad7e5cd984edad0d4129274c0f. 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/ESA092310677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a0da9650a2a4d26bc2a458840d615c67d2fb9024ef4e72c0d27f9f244ea66. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:47Z), 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/ESA092310678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143a4ef4fc9152d8e1382028cf55e6a8a005438f3e9e8483729ea25954cafb74. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ESA092310681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc3aa3d37bef1070091d320416d089ef747488bfa7ab8a173bc69624d8e8a14. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ESA092310682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528e05400c3f4475e26e998288857f5227e3545f0a2ee43f88993999eb25038. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ESA092332717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b477f953aecca94a7ee0acb822c280c83e3261e2c3502baaec880ab8c57e1. 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/QZNWX2425657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397aec7c38ae5b7aa0c3e0a2f9e8d36e62bb1a9444a8800834ea2d8264dafb47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES68F2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7dd8d285a066c10613a5691aa0c87fadd7039df5a51f3457100a804d14e3cf. 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/ESA012557357.