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 0x45aee87e5b12345150abb3cf7f150957fb8e940edc8177a7fb9a37e0c47fc8a1. 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/b50e63b0-6e2b-43ca-83c7-652fca93b2f1.json and https://artists.proofprofile.net/proofs/artist/b50e63b0-6e2b-43ca-83c7-652fca93b2f1.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 0x0317db6079e3456fe9f63d1168259e5d28a490b525967df2710d9a7929247b8a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZA56E2100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7af3afae3d3244b3abf591774faf01327ca9764bb693181a06a4a2ae4d4559d. 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/TCAEG1963401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9f5e1342b802c616dcab9d3d03efdbe85a8feb0722c4a20a851c3bc871c12. 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/ZA56E2100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9e7c57d53726979800e1e324aafcb95981f637a66344a4ba04a405035bdb72. 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/ZA56E2100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1d2b5342237289aba47351e04cd240cca87c54661e32a3ce2516d3cd865821. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US23A1569186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c5b1745a4f32048e03dd8babf27a3215c46a48cc790a8998faf15cb806320. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US23A1569181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3055a110819ab0f7b57e7b38fb17129ce3e003aa0d9e9ec8cbe97462f2e4e665. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:58:55Z), 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/TCAGW2306303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e49a0b8746fe01ed2d2a27837b0916bd6cf90616da3a891a3dd97e1f312adf. 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/US23A1569183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4964c35a06c7abcf6b936bc1b36b084a58418723e5408cdfa2e26b291354dc. 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/US23A1569185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bf3664b2ba541ded8852441c3a2cf1f6d726f9cc8d6b22a0d70a614b3c625c. 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/TCAJE2576902.
There's a Burning Sensation Where My Heart Used to Be
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66956b79077da0ad802f374311f586fa8d6b08d7b2f91697225ea572d75c56e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJJ2589663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3dd5ec26cb7de5e84dadf710670e5f51a66a8b0a0273da220ca22817b9848. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:40:35Z), 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/TCAJJ2589796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166dda535e725708b3906f4dbc8964b8573aeb04ed2514973ff7d508b5fb0b26. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJJ2589990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84860df55b97337b7984676dbc02c93fd97f5dd639d70b982899b60924a0c9aa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJJ2589943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d47121fd1e76d5e0530848a20a8bec206eb21a3b206aec9a2a92533ac3615. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJJ2590050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a01273547991ad5d06eeb4df8890271854c0ee9ee1aa6ac3d0073ae1934275. 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/ZMA0J2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1842686544c7a8c2cfcb41d2ab73ca62185289aacb4986612ff704e6882f181. 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/ZMA0J2400055.