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 0xae1d83c71c8fbd4228fe4f50e26952782dc6fa9a744935cc757b05a0b3eb25a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/424b687b-0a95-499e-9eb9-9520658631ba.json and https://artists.proofprofile.net/proofs/artist/424b687b-0a95-499e-9eb9-9520658631ba.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 0x23a314ce71f4cd5f3904b01df150da7c670f8972ba43cbfc8d0e9e6caa3d8934. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/USCGJ1314058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05f894215444f5bb009c111a9ea3f1ba14b026d4bb753bc492c985636baf41. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USCGJ1314059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474caada951a2c5e496336365eb5e3498cc374f20cfc0237d7679c8e3b1b53a0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USCGJ1314076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d88cd41b6a9d8668e5d9304d80e7e5ace65b18f5a650ac3b3e9781b71d26163. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USE830909421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53d024bac1579dc709ba130f2b8423ad2cf900906c7356a2838c826965b93c. 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/QZPJ32362213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6dc95f79e6b995a5a158447aeceb66f9290c2bf87320c34d58f305f3c57f7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPJ32362214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d669db9b45526c54264940a16ded317ad53e47915aebc86ea76f2bb375273f9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZPJ32362215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ee54305c583ee1250f3f12e116186e14d1d61451a034245dcc175c56c8ca4a. 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/QZPJ32362216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f7210fd120a54aa24a9e1bf440baf531c312608e2a325cbd3306396aeade0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPJ32362217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204b527d4b33161f4db68deac56c28e7fff64d2f94daf1b36627db0bf2f9e59. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPJ32362218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b6eae9de231f52fbef2b6e3d93cd3d54ab5423d146ae1fcee1af2ba673ef87. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPJ32362219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107978aae8cb22e61db33909059bb4663d84b7538bc1771feccc5a1f156ab34e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPJ32362220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cfba334847cfd3f6e652d1a533944d50fa55992bcf9efdea1bce90630d340e. 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/QZPJ32362221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77de03aa0a74f27f55c476ea7f9554723244904a0ae940e0678cc373428df31. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:43Z), 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/QZPJ32362222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ff87d907f622fda35d3bf87da1c7ee3b3b7c85271ea9d4304004a5d106a0ff. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:34:35Z), 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/QZPJ32362223.
The Tale of the Baroness and the Treasure Hunter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c93d92040e72660e5819403b723ebe977199a64172e5d2bad41f1fbc84c78b. 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/QZPJ32362224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b9fed5304622e7fc80e5b08bcd345c19cbe59fb52f44373e8277e71b3d22a1. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZPJ32362225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee34a78127a140abb52272d9ba1ef9b686def8625a6a0f920fc2045c62512007. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:53Z), 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/QZPJ32362226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6584124309f7005008a808d3ae3ab51c3e972b259de6387f9d3fc934180702a. 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/QZPJ32362228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e1710021b53f5079902438eac6839c37f531755a5d7095157c6f7710183210. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZPJ32362229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3abb7e1dcca6208d70d5b1e07fe25ff71ad2fe405fc70518d98b1f9500cdca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32362230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b073feacb70290ea68cbc9441dfc9907bcf0c30e2f2ebeeaa73a431912bea7. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:49:02Z), 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/QZPJ32362231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb878b82faadeb992487f4ac655586e2b23889960e5bd91d83991126c099845. 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/QZPJ32362235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2ddf98326b4a43117960fb933a4b5b372bec8563f6832181522bef6ad80ed0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZPJ32362236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567f041d7b53623f55985355fa777efcbacca2f4e9ee6c6c4c766305ae63f966. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPJ32362695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459219baca2659f1b9312dc0044a3c391a65dc2e64b41d4fd4d120672e199037. 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/QZPJ32362698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85ea918edc5cbba96ae444014360193bb8587c9ca2b523f15560cfa648b4f7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:24Z), 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/QZPJ32362701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f19ac6df05c9fe5222458951eed0cc3a81a5603a839684db6b7695aebe508c3. 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/QZPJ32362702.