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 0x7ac7b9961c82ad8af906c4bb60f2073b5091cdea2711b1e076711ccb7ec29b47. 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/2ec3400c-c263-4fe9-865c-c73b9ee2f125.json and https://artists.proofprofile.net/proofs/artist/2ec3400c-c263-4fe9-865c-c73b9ee2f125.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 0xfc552da5e47a80f1a309043db2d7181ee864f056d04ae42c64113d64789c0663. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDY41553642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085696e9b7c282d6b4f32b995bb9442f01c9823f48edb2ff3325d9613cc2024d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USDY41553643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b50e4ba7b8f199cc2246ed7e3ecd8e2d7dc6d6838558029a290b429f32c54. 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/USDY41553645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44deb59cda3efb8fd957116d4a7f997acb58e1bba1e60ec55484d129a5e12ad3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USDY41553647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dfe2f32835e3569546ae90f7664455b97ccc32a8d6793a4dd38328dd0d69d7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDY41553648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0db677b777e47efbcc784a8f2806921dfaef99ad997587e9dde8f4b75e9c893. 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/USDY41553650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1c4ca5edc45d938852cde8aa9849ea89975ab763b952c70029192ebe81d645. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDY41553651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e5c8dff2c71df85c4d04878bf0419c7eef256261d0b23845ce925630e3faed. 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/USDY41553652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a29f8fcd566168e8324ae5f012e023d8fffd2b60e641932e86b05502566cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDY41553653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d80b0cc6b0d4ab3396be268b1f162140ab7233a08cd8aa0c20bf83fb35a9a. 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/USDY41553655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2348d7660fab5c12f5fda4e422b9d04c543200b9d331192fd8de75b793ec6e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:13Z), 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/USHM81532207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a7343920788a1625aaf8173914a4f9edb5f11e4ca66e2bad16dae4e5d6628. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRCMP1601046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c22744daf68ac3d3e49b2e0750e708cc40c6817d9c8cbf77a35134808b3e1b0. 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/BRPJX1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25b5765c697908089f03752cf6c271dc03507b0863c8b50c32bddaad829ee19. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRPJX1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29857cc611d29d639c2f17cf8acd9860a54eac909ac89f3664169347582e8c30. 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/BRPJX1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58896d6e403db35108d6cbe3df8815b60261688d5f31c8195f41ccd7d88f5b68. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:16Z), 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/BRPJX1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2623c4c18f27474bf0497e30335158b2eb50b94f7b103eb261ace5e805e739f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRPJX1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe886d3a21c53f424fd4c4a5db566ac0be0604647a82036b39919e52b526bbe58. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:45Z), 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/BRPJX1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098248d93588fff255ed3d63c77296a2aab96155246e00acd3e191614179477. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:43:18Z), 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/BRPJX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49334f6bb2cc469f37b0fa594028d2fc7fe520b2dc08a76876544ca3e66085af. 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/BRPJX2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311e5fb47321df98b1619b290e60ab9100179b476926845728fa966fab6b12c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRPJX2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a42dc7ae541744a3170185bdc7fd95421acf4062ea2b54fb3989751100e354. 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/BRPJX2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacae942556a8b2cccf39e89c1b95e10d67ad025096d37bbaf7449d0b70dc7b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRPJX2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed981956aeccd096c9fd418c54017130c3c9e05df9f6213f79c05f81db25215f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRPJX2500009.