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 0x3689bfab2ff24316d27be521213aabda61737d7bb94c3424f842cf7dad45b2a0. 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/72a34e8e-35f4-42b2-b94e-ded981adeac9.json and https://artists.proofprofile.net/proofs/artist/72a34e8e-35f4-42b2-b94e-ded981adeac9.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 0x65d39abf0c9aa2030a6e770bacd5f085d647931b1cb2ab10f769e0afbfaba488. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:37Z), 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/QZ5FN1729363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3f8b76c57822fb709e251a85468db736531de914384f1d7c419e2630932289. 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/QZ5FN1729405.
Shake It Sporty (feat. Sporty-O) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff9143473b37ed2e803b5201c33cdcca5e8d7687f45ea06c883c8102a344d30. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:29:37Z), 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/USLZJ1395723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d77d5c94cb73584727744e7680c54ad9a83b0067983205c9574590ac1ebd65. 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/USPUX1200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ba5380859a9db0340f54a525195bbad9a0d2b7a89c54ee6c9d8acdddfbec42. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USPUX1201091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fc7c39abdb4bc7643f88831fb0726e8c92ddeb870f60950f5cc8ce9f89bfc5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:32Z), 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/GBFG91512621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28605f2ec9c71bf467b4763e92cf45fb45098e749d608275ebbf89cd5e538276. 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/USPUX1201311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51153d85cba9720ab9d01db311c9896de9d4fa9d48f7f991a7a1d8d88bb3673d. 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/US3GD3519081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e40ef4822814f7f4ba72fb3acbf3ff4ef54309fc86f8ac17c73ab5fc05ae6c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US3GD3695589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4d87cd897d513b526bb22baedae35cf102a3c9de00b5aac40ec1ebcb1dcf4c. 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/US3GD3930727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043b93b83a1e3d01ed2017a24382f98353c219b77d0846b95cc7ec587016435b. 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/US3GD4408069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c7ba9c4b020dd5e8cd9d7e3787e6c8d89ed922f5a282086b847502dfe09ebc. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/US3GD4441673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252333326228217fbeca9d77a7ada6bd046fc2fd5e173da5bc271c65239d39c6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:37Z), 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/US3GD4453377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9109a150ae7c6f4678510cd29e2052d1ae80390960d391ba00ef7cd8c029526. 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/US3GD4508268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225428cad3274aa633e8c84e0da37d57988a0168b4f3c735652c19690cabcef5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBRKQ2592398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2701bbb119769f17006205e4d0cccdf67170bacd1784a299b2d186e598aaa174. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBRKQ2592422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc255e4093abea654e890bd8e39b07ffc703e786524c36c5cf0e0a6f3e66d1c. 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/QZWV32552863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedcf01bcbb798626ee1a207de103e303929a9e65c4e4fda773344af8c8984f6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBFG91512626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1474a45b18385c8d784949e4559d33c3494baea50ca3119aa3b165b97f3818f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBFG91512627.
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 0xb22b8068c68dbc65b457c0172901ac8eb4237babd7ea5348d01898a241c97ffa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBFG91512628.