1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x10390fefce2e54e454492ac0209d5e93aeb616a22fbd17d69b466156962b87f2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9f2eb97-d99e-48fc-82a8-391e7c48c8c9.json and https://artists.proofprofile.net/proofs/artist/b9f2eb97-d99e-48fc-82a8-391e7c48c8c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martinů: What Men Live By, Symphony No. 1
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 → block OTSBitcoinBlock must exist at that height 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 0xc4f0f8e3e5f19c4d0ef8caf8cdfe7600fcf45011ad610192d2ddfa41d4bee10a. 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/CZB871802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec113d6c97a1921c3f0c939175d77b3b843c01c2c4b1da54167c857d4cc0a42. 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/CZB871802003.
Civilization VI: New Frontier Pass, Vol. 1 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df21379b74eec333b3817b6f3abed033d18b99f001c580d34d74e92e36f55b0. 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/TCAFE2064426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b61ea5f41bf644da69ee1ac5de8d4585f35759bc58ce61fdd63929054349fdf. 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/TCAFE2064441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38f07b70ea931c82fef13136880d7e5bc993d853ed324fe7b25acee21e51579. 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/TCAFE2064464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29e61c186bc8c5e42590ef31913755cde3a5d2a0dd3367811b4a699a5a82e7e. 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/TCAFE2064466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eeb12129bf9673c468e2c9464a12c3db754d1a0334de95585603427d9d4ade. 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/TCAFF2001742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4575b002ec7e68b4cb679f6542b9d73f3b3007f6a7bf11f921518ab4659184bf. 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/TCAFF2003753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103107eae448bdfd6cf2cd904d14658266da8970446b9ca1e3a592fd8e73931d. 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/TCAFF2003758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5187180ee8c2ceca88db0f3cabda9c4a4bf66e2522cf93e21d04c70ad20f932. 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/TCAFF2003766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04370ec84565a99aa3a4372563374444820d636061514779f01dc56d91a5486a. 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/TCAFF2004589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63023ec9641386d17b91ca85957c0787ec97b503cff889f51e2ddde50cd1d6e. 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/TCAFF2004590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4343beb202ca8476b339e44058a2f9476158d4893de613c95cca8c393a58dc86. 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/TCAFF2004594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4a3e14e0477c8bb40cb2b6340a526b1132e1d63053ade303117de912a2619d. 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/TCAFF2004599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65825120535f82b60ccf187a07aa79cbc741c816655493da537e271ad52dc928. 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/TCAFF2004607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09846992f2cc6099c9b01f43c0723ab59d0a85ad3f4967b31407392126314e4d. 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/TCAFF2004613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa3b90da7e1847eb941ac1c11932a2125320edb701c0f8997af459d24d1b9b. 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/TCAFF2004620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e341dc3eb5000056f4626738a28142e0e6f48540dd17e3f3b3958792c0ba8e. 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/TCAFF2004624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0b5550afe7be643461b41fd9060ba49554f14131efacf9c2fed3b45ff6ac8. 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/TCAFF2004626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8770137418b9d7ab9ca564b4586fc6ed4273bf31a640168ef4fe8780e1aca. 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/TCAFF2004629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376ed8ae089e75efef3262d4ed2524a221fc66c90331c5681ed6ae2a2dde2b8. 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/TCAFF2004634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ac335895ad3b4467e04a21813640d863b9920393448f835b7821b887747af0. 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/TCAFF2004652.