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 0xf86d99a029daa7151cea98a841df864c5f1c3cd7bb50fecd682fab8b1c05088b. 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/e65df669-2e67-46ae-a68a-76a122cf40e8.json and https://artists.proofprofile.net/proofs/artist/e65df669-2e67-46ae-a68a-76a122cf40e8.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 0xad1d63bf6c76008832bb18d2bbccda118f52ada7f26ed3e297ca24316e549dc8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72301310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c24a6509e7976190616d2e8575fca7c1d5d790494d0ce790bd19e3d2026fbe7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6XW2366789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0eb192052fc59931445d8081c1be2decd4468e280c9a390e702761883a4e3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6QE2365007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dcdcea92c5c9af65ce3bf61a0b6da9414d6d0c32db37a08250b978e3c576e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEPQA2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888e7eed14bfe4fc7acb799570e5fdf76fb6fd61f7d3c128b5bfe28e8ebd7377. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6HN2322355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670cbb69391c529d44b3d0dbe72b1e83e73ae744f05c66183e78ec7c86d2d95. 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/SE5752332796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d5edf9794bb3d07c893aec4b01c2c09d2b7c7c8ef3ecbc2381344b5f8a3576. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6QE2274321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3040520ff3d3f4a5bbaf1f8b3edcd99c54abf2e57ad59619a5be24291b87319. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEBGA2100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2506a3a6f36bad4fed815b0abd73e9777ed34faa06347412dcc4911a2a4af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6A92053052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbf1a1e8ab6c7f63f8955075f08e667b34005eaafa593f08b8504c5cb0eeb26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6A92072678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7459a0cf3073885cbb12cb8dadb3a60628f26a324e786894a807a0790d46d024. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE5BU2097541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8efcd6ea0f8ffefee7780440877a70f243e8655b36e5aa3a17c4696fcae358. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEUM72000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbee602890fb5b6a40af57300b44907ec41e5693cb70430f19750a537ed02b1. 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/SE5BU1971146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a44cda7b9316960451642289fa68d0570899e3ba03b0bb6cd8207e0017536f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I31957653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333ca9ce33dd9c48f3418662938c3779430a82894ebec6aafcc8903aebb7fbb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5BU1971141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b5292bc157dbe40c637841d450555e860d35e1a7054fc7179f55c1f6bb2ffb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5BU1971140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e248fc602246ac581562e2ef035b864a43122ac0c991c2185c56a2bd67750. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5BU1971137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f842704987c61925cd36e2147099f1882c6e746554cffd35ade22a28714abe9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOUM72400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464b757d6d1ade3e63cb9640bb01c576353948deb34d49eff9b2e77d33506ab0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29437c632124aa5a398b0fc4b69f7a8066ae3b20d08edbbe020b1726603ccd74. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEUM72400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3987dd118e342dd1dc518bce0f688fd8621610343912bc25fe28c3c83f3ca5fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4bc1f811cba16a487f938fed990f2c3908ae287e4119891c4bc163817d7676. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c396c7684c55183d4cf062fafb063135933a9fd002f8d12534a03aeb13fdaf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72301464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2526f832c7c085db34d99241d968f2bfb3429c7b10db6d24a59680d066431cb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc079cc5a66fe17edcb793afc1e087eeef2a72763b2c9b41abea2398ff552e1ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3011d9d601c8f44b0da6b8c1d2399878ad34e5fa3fb1514f57f2a8470d078fa5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb73d054776d9fba91264a439196fe4afe27187d58c4619101a1777086baf28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fb0915c9bae3c1dd3a96e47ad4a09c2869fca798c11f071c8f81769b713266. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b3a80dce7df7e2fb5c274f3bdae46c46a52c4344fe3c36f7310b2a449ff4e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77998cdf64d8d7b449b3f96c05d3355156c5ff566b8fc5df68e1c5cee46d4f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEUM72301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb006928e7b62edddc756af76dbbdcead046925e48355b5068d98d0c967afb640. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5752492132.