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 0x5f2a8e672f0854910e1ed35ec1e929e038488a7aaf0bcffd36277c16820f8ef3. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64460c82-1826-47f5-9a7e-157188cad0f5.json and https://artists.proofprofile.net/proofs/artist/64460c82-1826-47f5-9a7e-157188cad0f5.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 0x140650e42ca48aa09fc2d2b2cc4e9ed90464b60a4ef8cd033b3e83364c6c98cc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USDY42218592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe084aca4a0ec73a680a571cc729e0bf5d23036f5cce0888d09a672310c02c118. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:09Z), 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/USDY42218594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe084aca4a0ec73a680a571cc729e0bf5d23036f5cce0888d09a672310c02c118. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:18:54Z), 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/USDY42218594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c5498350491d7ddca43b2b505f2a53ca72b78201282ecbe68befb6f08a72a0. 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/USDY42218596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe084aca4a0ec73a680a571cc729e0bf5d23036f5cce0888d09a672310c02c118. 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/USDY42218594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c5498350491d7ddca43b2b505f2a53ca72b78201282ecbe68befb6f08a72a0. 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/USDY42218596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d4afce58f02961b7c85ce9821ea59e4ff9116b97cd38683c58d44540dd165. 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/USDY42493673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31178d5db9397c4bbba1e311d9bc41f1d9ffe48630096773dab3af0358f542cd. 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/USHM22439547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3db44c95a8ad9bd89b9d986194f416b5272455bb7c1d3f9965de1531c6d64c. 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/USHM22439548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422bd3e0eef3508e681637107eb700516cdbbc93d16f7062a88a082ec9f5ee1e. 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/USHM22426880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642969521c4579558061f7f7c49713898c249f7837879146c3b93649db22c2db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM22439549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17b9fdab0a8f80d206fc2663ffe2b8751041f471a446da156a6da4aa4f6e9a5. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USHM22439551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02a02b725937ce2be530c85a9f6b80a14b28506de718617c83c1d3127fc237. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM22439552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e452ebbb604488ce61c6edc05da1171d1e6c38f06dc7f7f17ff5008d0cdaff3. 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/USHM22439554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a075159694d79c603cbcbcaeedb193ce37873f4a2752e322c9a901ce2112cc. 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/USHM22439555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d4afce58f02961b7c85ce9821ea59e4ff9116b97cd38683c58d44540dd165. 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/USDY42493673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31178d5db9397c4bbba1e311d9bc41f1d9ffe48630096773dab3af0358f542cd. 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/USHM22439547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3db44c95a8ad9bd89b9d986194f416b5272455bb7c1d3f9965de1531c6d64c. 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/USHM22439548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422bd3e0eef3508e681637107eb700516cdbbc93d16f7062a88a082ec9f5ee1e. 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/USHM22426880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02a02b725937ce2be530c85a9f6b80a14b28506de718617c83c1d3127fc237. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM22439552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e452ebbb604488ce61c6edc05da1171d1e6c38f06dc7f7f17ff5008d0cdaff3. 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/USHM22439554.