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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe0727267a57ed55d5995b16a876d293b22a4d51a4976c79c2db7c876b7bd0d. 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/5369495f-7736-4b59-89a3-93e18eda5366.json and https://artists.proofprofile.net/proofs/artist/5369495f-7736-4b59-89a3-93e18eda5366.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742549042086f9ba25f0f50fc23fe46c7ed2c47e6f306c7244378811e6b6a4ac. 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/FRIDO2413051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1e051cd50764f0e97fbfc7719a5042369046ec9b4ffe3a6b0dd7b4ce28457e. 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/FRIDO2313586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462a484922c9907dfff55b2e184ee31112c95a1dad9a2bcd18fb0463f9fd8c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRIDO2310666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e837da4274ff263ea73689e5767edf5b5456d9fb25d0623988e085777ff5645. 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/FRIDO2310667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a9be4ca63bde5350f5fdeddb16f13c5bd05e3f96ade0b751d7449b6aa409a8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRIDO2310668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c654b7112a0ed9d32a53e91dae551cae7b4fd780c6d4c1a6725fb23ccb14bbc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRIDO2310669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059fa1ec3978b7cf967236bcc73b148e28a9a172faf0337ac223cb5844e6440. 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/FRIDO2310670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462a484922c9907dfff55b2e184ee31112c95a1dad9a2bcd18fb0463f9fd8c8. 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/FRIDO2310666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dafc00e256c482146f76d02f475a27ca4697b65c3d740a914651fd5f8bcaf54. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBX722200294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cae4137126b0ffa353a2598f1c3cdb2f442b4d09b92d16cb054eef6f53ce67. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBX722200417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e7e6047a6d8b8ab03f92fc8a6f669e18935d3f1b263a1b1b5becfb2cab0a2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBX722200418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0ad53f78a2d9cc1853d6151eb4eedcf57f593fc25cb513a1108d5b0f53bd51. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBX722200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dafc00e256c482146f76d02f475a27ca4697b65c3d740a914651fd5f8bcaf54. 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/GBX722200294.
Trouble in Mind (Original Music from the Play)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805bd307243dcfc6a1a2c9b73a6fcc06255c981adcdbb8ee97c295db1c804a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMQYB2124602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25e534627aaf5a2545f4fbf26a3954b630eea5fd4ef3f1fd5a992e1a338c01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMQYB2124603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf772fa02ac5ace18b54bf35d0e690e388faeb609665f9836b48d36ad08d7687f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMQYB2124604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93de21394f06e90b0b6ad915f99773e339b2875cdb0af2d93cf3d7553bcbe80b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMQYB2124401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb651fa384a4ea7a62f72e73258ec35d95220db454929636de1271d5d585ef2e3. 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/UKVZP2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e6869b3a72cbc8e9f95816b5dc7b2ae1caac22a815056cf6bfece6f3a7639b. 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/UKVZP2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dca6385a27ba9797aa67c547bf1f4960903b195f446e15f3a8295b77439010. 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/UKVZP2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c113adb1f8734d300c7c495a0f8fa96272ee75935e6c4e941c3d9c5574922c. 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/UKVZP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a9c7f25d868aad9d968bf60cdb55d5fc8e4d318836d0f525d57448cefadbcf. 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/UKVZP2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c113adb1f8734d300c7c495a0f8fa96272ee75935e6c4e941c3d9c5574922c. 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/UKVZP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a86b415e388b7fa85a58804a298efd93114d44b6c7d4cc5e266eafbfab9584. 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/UKY4V2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4185543d9922aa98fe07d277b722585a9bb49d0df691ea81e92ad5ec5f131007. 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/UKY4V2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2657a6b82b3c9e34d872b4e7da673f3babf6b218cf9c5957a7866e2fb6353d60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKY4V2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b11794c254a3aab1426581dbbfddb06acb866ca192a299a8a60317c132c9e2f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/UKY4V2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dfa5665cf24848689b2597578fa4fc13d04431d1db0b408521b8136925ae76. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UKY4V2000001.