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 0x45dd75918022f69516d8362b1707f79a728fe640e14af314688cbb36c967b48f. 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/0512ec18-635d-4a03-8891-a2aa7c54a2b4.json and https://artists.proofprofile.net/proofs/artist/0512ec18-635d-4a03-8891-a2aa7c54a2b4.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 0x001823ca46f506ceb6df3233133ede2a80993bda3f990e19e739cc59310950bb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/MX5051501470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8894271ed5c8b243bd102d9d656feff90ac225b14ad205e0d5dc7424f0c93061. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MX5051501472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564bd7b7abde9a6ed2aead189690bcf39c5f998658bedee133515e5cced37dde. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MX5051501473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578a755a059b6bdcf76171f5e8044f91afb9ef4fa22c72c4a84ba8e5e1c96398. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/MX5051501474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3361569cb13c6239474c3ae7a384f5db193acb6bff71e4547f528d78989a4. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/MX5051501476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eaaa885f7991a9f21e5ccd694baa35c000db024c168dfd4f68125915380bf8. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/MX5051501477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030abcfc533111b2afec8e13cf41437d3f958d278d1b505e242403b1ecf6834d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MX5051501479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025437d0571049490752a5f8c9508faf49cc7347b70f8749641b2b48c0e7e83c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/MX5051501480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d5409c35d35815b70b650eb7ccbeb7051b432d0f8fa65df908748fe51170ed. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:11Z), 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/MXG701900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa656df45fa363f1d7a5bdca116d1e379b7014ce133d9271e1fe5ddeb509ec3a. 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/MXG701900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd02ff2cf918b33b28fb0dd9162ee03d670fd0121f3331c2762a4814a58657. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/MXG701900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf885c35302c825ed47e30765d3a268da2f12f88fd4052cda5b5659c9110222b8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:11Z), 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/MXG701900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7375e916d5e71ded44b72dafef0350cfa0a80f4496ae54e17da0e5c60802e6e9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/MXG701900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20045bfc19eec03419ff632ae21f143c964cf154714b263d79278786e1bc10b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXG702000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8644303bf18e0fd101f31ea6aa3821019054eb67d0ec4308de97bec3b1010. 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/MXG702000553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661d74748aeea141d5a39883cb2065e6559420f1a56a317c59f56dc04b027543. 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/MXG702400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db783917f7ef26524de77145dadf1b42a70f66081e9b43774a23905b117b45. 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/QZGLS2393689.