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 0xd7a9b55179957c232437d4744bd3c2da8f8f6af15f9864035f332ed623aeb379. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe59abc3-762a-43f5-9810-799834b03e34.json and https://artists.proofprofile.net/proofs/artist/fe59abc3-762a-43f5-9810-799834b03e34.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 0x0c67b86efec6ccefbe43bfa615c9bc14a0de00d5a7ecd4722d8889099cfa1b87. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:20:23Z), 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/RUA1D2383598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fce20fa2fd563811c6949f9c1abde53908bdf288c79e45d759e5d4e0633176. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/RUAGT2332486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c7885a1821aa293301ba70d77259a25c9e453a1e9bcc4d29399a53101e787c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052432834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b39ea7382610bab88c0f94881a8efd0be781189dd855be125c1c29eb47408. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:05Z), 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/DGA0Q2429568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97728bb213afbb3d98696ad096f5ba5ffe531a296b72bf624117e4132f305686. 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/FR2X42587246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd27b0dfe2dc7ba9012430c4d86b92e6b49f41e8f3451ecb3455c9d568f950cb. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/RUAGT2530357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d010a16a32304bd2182c772beae8d8213f5f0a8886e609e903b7a9bb43f44a6. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:12Z), 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/RUAGW2507560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d3a0cabea299db9166f037b75207cff14a240abf68e8b8993c50716cc51e5d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUAGW2508459.