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 0xb6ff9be70179558ed44486b5f35b7d56e936c8d89862590c5706ab68bffbf81a. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71f5d40e-dc83-4827-9fe1-3b2650b91c07.json and https://artists.proofprofile.net/proofs/artist/71f5d40e-dc83-4827-9fe1-3b2650b91c07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best of Clearwater Revival Experience
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 0x58b88ce50810f534134711ae606100ae6d50eb7802633e4c19ec065fc00d3a94. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:44:26Z), 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/DEXO71953174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343ba3e691383ffcfa4c83a0762aa9dff9d51351b79dbb3b60788c4984d2e7ac. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEXO71953175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfe46ef115aebc0ae97cc4101283a9b0fb22ffc1d3ae2eba0d6fce01a0d9d17. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEXO71953176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c6a9e1fdc9be5825f6e28fac8ceeda8aae680532ce1e54f7386114a3f648d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO71953177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d4ea553345c844345729aaadfddbc4316ddda0b03c7689074068209acd1ca3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO71953178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76afe035eb7b6e41b315129b4e8c90417bd752702a1eb22b7282904e7621b60. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEXO71953179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e068fa935f65d332cad96bff963f0885160c90c8014fb133d857e161a727f0f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO71953180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabaabb9612c6423f15d965a111279146568b67b0d7ed9dc9d385f3a7800e555. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:46:46Z), 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/DEXO71953182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c2e7dfa51c921f5ec027a736bea836bfa0efb2d407b1c3bd80bf2b351e5b9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:44:57Z), 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/DEXO71953184.