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 0x852f7c06f0989bc0a5531b4e54470cee946399746bcc6c319d060046b5fb8191. 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/de53816e-8e84-46f4-81d0-2a753cb768ab.json and https://artists.proofprofile.net/proofs/artist/de53816e-8e84-46f4-81d0-2a753cb768ab.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 0xf572cb4fbde804ecbdeb1154f862dc492ee36a5d6682b928e90184e90bf2be23. 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/LTL692300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1941d338eb92dd8ad7661e970520b8e610cf25613961ee36011eb86fb905fd4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/LTL692300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d0fe3ab0eed0dee1a5a1087ee7a96e1bdb52cfb1cfc6fb7d87a7f550e62a9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:43:07Z), 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/LTL692300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bfaeea6fbc295cd60426d0896edd42bc0688ca6d4a8d6d4073cddc326d0fde. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:06:28Z), 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/LTL692300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f5a807a45672d414f290d382438a1f508b8391bcbbc05b5ffd32620909461. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/LTL692300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e6e79f1e49035ca3d3e0c770652438147b6ebc76cb0e179940fea2ff4b92c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/LTL692400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbdbdf3df81e38a104c2ea8502627b7b61380f21bf3c831a113769b02406cf3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:14Z), 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/LTL692500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be44072c5310abe5659235f5c9833a8a41679cf3e0c860e7636ef19294a3cb6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/LTL692500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce07440af7d1bfd9d3e6170ce59cc1545fbf3e239f7c5e01d04674891c62d0b4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/LTL692500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae400b55ff8fdb334f7ac769b00710235b158ac369985c506106c5d38d60ada8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:27Z), 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/LTL692500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6997f259f1c383c43bc443836d47f8ca0674fe5d97645eeabd4761d328bbe413. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/LTL692500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177d99faf8736a58f31f25d023a25d5ee0c64ab288822a2054b93efb1b69245. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/LTL692500006.