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 0xa7640069093ac3617e5fc5bd72195d510328aa06913cadcf89163a894dc3c1aa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b306702f-a5f4-4307-bdc7-feabcdfb5dd6.json and https://artists.proofprofile.net/proofs/artist/b306702f-a5f4-4307-bdc7-feabcdfb5dd6.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 0x3e722e2b315c86c1713bae8bb4cdd1fbf520d00daa6698f26ed7ee4eb24b17d2. 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/QZLBC2309365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6dbf652b13338ce4918fa74876d141a2ab78a75355a1392918162a44bd58ff. 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/QZLBC2309366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15aa60d40292a769c1d502aa9b517392a620291fb371b0c19145be771f6b2d1. 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/QZLBC2306274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7355cd32cf8924afad0e55a756a867323600a64218563471f52b9175ce74ed0. 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/QZLBC2309362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5b0e9b59a1cb954c7bb4662abcb8c55f608a966ee05b5d06a9035581203a3. 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/QZLBC2309364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878e0d83a1e47add4eaacec8f39f94ce178145c587b159150b951555fd815c6. 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/QZLBC2309352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a41b0782342af0f25b1b182cc931769b887fe18ff52ae6f430a0dd6477ff4f. 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/QZLBC2309101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd23754ffe19bd4a3078e509d1efbf9cc19fdb506e410866c05358ca936d594. 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/QZLBC2309367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bddb003075051dffc2de9268d1b5bb4813d5c47f3f8eda29afb4060861c24ab. 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/QZLBC2309368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3949b78a74bea79d45303c0d522928465e21d8356b5679022a72856abc4e76. 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/QZLBC2309369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3b9d9e935d863949fb3d75dad9aba632207073b3149f20a88d7aa97ab16c4. 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/QZLBC2309363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468f299abc6363b7635a7951016c631b73e10b006d0c72f3b83ad804603f9a9. 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/QZLBC2323577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a74f9a03a36bc5b5532b0bcd9f3d85198f72e2f3ec3e284df51d481bd3f8f0c. 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/QZLBC2323578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3158f0f2b144bda27deb36b819fc44e71e0beb8b439849c1534c105d01c36c29. 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/QZLBC2323569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7b2c8c97c8a5cfda6333f6c67f056b6f6f161f7d8e6f1651c9f68afc8a3d8. 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/QZLBC2323570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771e688decf88564b55b11aa50ecb1ab66e2eb574d617b3d523bafef72eff57. 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/QZLBC2323571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ecb3f4f8e7c35b09e15d2ccc43be9b3988da447adad453c2876363c5db250e. 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/QZLBC2323572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58271ee49b8864c1c5673fdec6e1721b8250fc8fc0019f105957a44d9cc21323. 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/QZLBC2323568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689ba7878d08f99bdafe246c4ea581c4316720d178d0432f5674b10064dde6b. 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/QZLBC2323573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df3b5d4f25cc1610ed1baf0f0dedb4b29ddbbd4378104b8b1cf922e4368a72. 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/QZLBC2323574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25133032d78dfe9e3aa62bf89903f224dc3b29fd1bb24c94f4ba8bba906085c5. 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/QZLBC2323575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f6cefa48128249e42957132a082101deb9c3354c26c3db581bfc59c4f159a. 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/QZLBC2323576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878e0d83a1e47add4eaacec8f39f94ce178145c587b159150b951555fd815c6. 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/QZLBC2309352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468f299abc6363b7635a7951016c631b73e10b006d0c72f3b83ad804603f9a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZLBC2323577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a74f9a03a36bc5b5532b0bcd9f3d85198f72e2f3ec3e284df51d481bd3f8f0c. 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/QZLBC2323578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3158f0f2b144bda27deb36b819fc44e71e0beb8b439849c1534c105d01c36c29. 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/QZLBC2323569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7b2c8c97c8a5cfda6333f6c67f056b6f6f161f7d8e6f1651c9f68afc8a3d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:26:53Z), 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/QZLBC2323570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771e688decf88564b55b11aa50ecb1ab66e2eb574d617b3d523bafef72eff57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZLBC2323571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ecb3f4f8e7c35b09e15d2ccc43be9b3988da447adad453c2876363c5db250e. 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/QZLBC2323572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58271ee49b8864c1c5673fdec6e1721b8250fc8fc0019f105957a44d9cc21323. 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/QZLBC2323568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689ba7878d08f99bdafe246c4ea581c4316720d178d0432f5674b10064dde6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZLBC2323573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df3b5d4f25cc1610ed1baf0f0dedb4b29ddbbd4378104b8b1cf922e4368a72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZLBC2323574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25133032d78dfe9e3aa62bf89903f224dc3b29fd1bb24c94f4ba8bba906085c5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZLBC2323575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f6cefa48128249e42957132a082101deb9c3354c26c3db581bfc59c4f159a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZLBC2323576.