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 0x3e2f1d60bca19b14a8dd2217f1a9135c895caa5c328f4ca9d2c23b19b9ae6caa. 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/b04f3a9c-d0e4-466f-930d-97a210d2c817.json and https://artists.proofprofile.net/proofs/artist/b04f3a9c-d0e4-466f-930d-97a210d2c817.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 0x609d1fd37b192c5d66ed99ce6f4272b4ff3bbfcfbb2c55525607acbff42191f2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MXUM62400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b338401d934a19594e5aa2439aeba6844637823d59fd99be34f3035de9a3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF112200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b338401d934a19594e5aa2439aeba6844637823d59fd99be34f3035de9a3. 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/ARF112200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ecc80f3b435e124a1b71692ad619844e0c83dcb408460feaf69e87b516d876. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2410412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5f271961ab3c740aba48c2600ddea228318763b81b27fed8fb343ca347f34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXH612100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f14852facd428e8c95b2329e57f9824e008685caa973aa64dcf0e9598ac6a34. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc330dbe6b684e6794b62dfde1b51ac9f1134da79807690a11382e524eff67d4e. 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/USA2P2345424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2310d0467eb1362c04e9a62ea3713942b14f8df41c4016d94ae4ec22e42f547e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2345425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f0b9640a1c12ef7e259e1300bb92a0118a938162a7f9a4a14f0061839f8f8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2345426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc33d337cd5c1f0a232146da891b86f6c5e82083b71161a86044af105721a6. 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/USA2P2345427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc6b75a0ed33eda70453e903b93484582ec8a6fde7abbf38acfcc08b0b9997. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2345428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb51294d1291b77e764c71ff85c41d1c8bafce0c1a7aa8e608118c72a5981a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22566906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe370ea408476e851ac6c427f2c32fa08f32c516e71fc50803a1492f80f410e15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM62400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830367b80f87dbdf0cdc871ab54dc9f105f0ccc522ce48c99839cbd7abf4b856. 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/SE6HN2485849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032d6f7400b0df32da971ee92b9a5acad0cf5f610f08d9e9e1ebc7ecf24ecc88. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2202802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3314f874f787f9c80b55c3059db11973feb9493c30e622a89998e1292cee0ec. 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/USA2P2471464.