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 0x1c394e67516cd69bbdefbf19a63805b426c0ffd645a56e626369235fb5c69730. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f459708-52e8-41bc-9e34-a814aeba4326.json and https://artists.proofprofile.net/proofs/artist/1f459708-52e8-41bc-9e34-a814aeba4326.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rhythmical Jazz for Self-Isolation at Home
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 0x66752c80982658c76e1708d71b18f26e4a617db6266bd773f4a8d7ecf68de5c7. 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/GBSMU7718550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588055495198e0373bd1c1202c5a54869a34daba4b722db325368c086bbd77d9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:47:44Z), 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/GBSMU7718555.
More Rhythmical Jazz for Self-Isolation at Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09ce32d2b14837b76e6de3a09733c4f5f0f2511c96551d3b1e1e65d14f6377. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU7799500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282aba8d15364d3b7b1ba11da6e1bd6745c692039a9e4eefd560d3e2cd496f99. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBSMU7799504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f886c679b5ea6c1f0bf6dedaff473c91937d8f19e62fe5f626c2f12642eb0b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU7799505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df38eae87c93e3e9d3e41f4a8bee831fcff517ff93546a0add7e79e4ba46334. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU7799506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9b3921fab9422a03dc86c9171e3ff93a08ff716b6b9af1b334e0236ae6590e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU7799562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e9fcdf54ac016cae3be2849bafcd76b4fd09cbf54c3e2894402bc0a3fccb95. 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/GBSMU9626164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc434af054f97a446503945dc6d0c9de185e49087d45fc67ab99ffc42eda8df. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBSMU9626166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3860009bb0452dbd3945498bf71d27cddf48d90240e7de3e56d89e0ccfbbb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU9626170.