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 0x3adca34f5b4982401a0dca512f66e5d0a9c99a2712579550385ae22c9377b5fa. 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/9a10a0bd-21d1-47ff-ad59-37c95526569c.json and https://artists.proofprofile.net/proofs/artist/9a10a0bd-21d1-47ff-ad59-37c95526569c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Civilization VI: Gathering Storm (Original Game Soundtrack)
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 0x97035bd28840c76ed7c474db34fe3b774ec8b0e16aaa687bd8994fbab4db70b4. 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/TCAEC1918514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820a27e3fc565a749f273c7b3c00e5971fe9eecc50988d48bc84ad596a74c59e. 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/TCAEC1918504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb7c25a2ec7a28b08ef44e4dcc98d3b17dcf1b570f42412ac4c3f0fd733211. 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/TCAEC1918507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05a761de425b3124c160dcfeece06fb682fb324239342ef96c3ba6ff1ded47. 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/TCAEC1918940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835f2683406bf74db519534db4fb5dd8cf52bd134821aa746fe92fa8cc891bf. 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/TCAEC1918528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482adcb2b7da1ab395baebc628e43e70cda9188237b51b7033231a7ffc81c34a. 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/TCAEC1918941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cc54394432cc360b791da9a8399eacc24978baf80032dd303a1dd2f413038b. 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/TCAEC1918531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692fb89d6166b2e5c162bb6065d924ff20876d9e09589fe4bdaee33b2b2123ac. 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/TCAEC1918529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d2f1d98ab5b57ff64f9cd55810595ad83adaaff3dc63de17b78552628e6f1. 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/TCAEC1918943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f155ec5b9e2f694c309f1626daf324f943f945d6826e740ab2d947ff052118. 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/TCAEC1918942.