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 0xe9f409eed15baeb8b22f08be68caef611d6f0eb28bc9637651d5320e15d0020c. 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/117dd592-114d-4e36-874c-d0ff156db56b.json and https://artists.proofprofile.net/proofs/artist/117dd592-114d-4e36-874c-d0ff156db56b.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 0xb076d3a85730649d22e34574b10683aa7c7570cacfadb965c16457ba470a04df. 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/AUUF12301362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb293da5b7259ce852e597dd8c77bb4e595cafaf6bf5059e902722ee449089. 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/AUUF12301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2f52ea4d77ab45df0b063cbad9d16a7bae78ffc539bfff644d3aa99c0ced7. 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/AUUF12301364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b0f5d2e83fcdc1524117c1273e0612c551652a927499081f1cba7f84e556f2. 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/AUUF12301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ecd5531dd298010447e2e134af4cf473b3e651c000a4ad83843fac747673b. 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/AUUF12301366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f6519d64a78918b6fddaa49aaea6d235dddd25ef263677e668ff7b83f515d. 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/AUUF12301367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dde62d77cbc12fc7a7f004c794941055971d518390b6ff474fd7d6b44667b2a. 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/AUUF12301368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a25df96f9a9f0e1636937859fbe32768e9c910482df552c227f5909422969. 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/AUUF12301369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9196ac6bb5814fe66903c5d6f777f90d1133bd3d0744bdaf3f334789daff5c6. 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/AUUF12301370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2862267919e3453f3de5f7981b080a90062e7836d348f735a52df432e8d7e87f. 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/AUUF12301371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b91611dce5485ab9afc8f8386261ab2d6ccc252adf5098f9f8cb9de6546004c. 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/TCAEN1921117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fdb9ea55bd5c41893d22282f2125ae87a2190a68bf0f53098a81b15f63ee0c. 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/TCAET2011221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e92766d03440effd70ad93aeaf8358b4012aa410af0528c8276274b79fd1d. 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/TCAET2011232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a32d77094bd03040ae15f96617cc43e5e7800adc2d91cd6e04eda2d7bfd221f. 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/TCAEQ2009988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9516b7bc17cc907d86e892bb56543aa7613efc0fa4469f107b988d834d139932. 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/TCAES2003391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ab92c4f56bd086ea884626418a153bf0d0d44f29e43bd9b6c86e38831d95a. 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/TCAET2011245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acd73b27424c8bd0238edc92a62b970bf6ceb5f1cad8e223300a451ff9461d5. 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/TCAET2011248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a66e85661ffd89475048fbdeefb753bf777b6fab5103c617568a79a3eed8e. 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/DED832400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2f52ea4d77ab45df0b063cbad9d16a7bae78ffc539bfff644d3aa99c0ced7. 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/AUUF12301364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb293da5b7259ce852e597dd8c77bb4e595cafaf6bf5059e902722ee449089. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUUF12301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb293da5b7259ce852e597dd8c77bb4e595cafaf6bf5059e902722ee449089. 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/AUUF12301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c87601a6d5eb5a7fb2e262ed3e6270a7895db41822e36d75426cb124f89af53. 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/TCAFO2154455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9516b7bc17cc907d86e892bb56543aa7613efc0fa4469f107b988d834d139932. 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/TCAES2003391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a32d77094bd03040ae15f96617cc43e5e7800adc2d91cd6e04eda2d7bfd221f. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TCAEQ2009988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b91611dce5485ab9afc8f8386261ab2d6ccc252adf5098f9f8cb9de6546004c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAEN1921117.