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 0xd190e153803a29a368fee67f9ded0be1ac91e894e8245d26070a7a929f6e50ec. 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/2acc0f83-6fca-40a7-a420-861168b196aa.json and https://artists.proofprofile.net/proofs/artist/2acc0f83-6fca-40a7-a420-861168b196aa.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 0xfdbc848f454d8afe2594e6dee2c9a86c041d6308292f9ca0a752b394671ca2c4. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US39K2104102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc550db5198ade80b4ac8b0418e2f3493d744576ead82e2baf4e1ff743710d659. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US39K2104105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ed23d5e600176536ad734e84216852c81524caf815b0ec6699d8f158a30d8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:23Z), 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/US39K2104107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd007a23efb5d18bea93c346aaee4e771224fb12c942bef6a9b63d83578a9187. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US39K2104110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c450d70f94bd132fb0877bce5789dcbb43dcab1feff83aa4fb7102587d09600. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/US39K2103904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff622f899ae36142fa1e80291fe012796cb6691855d86cc95d7909167e3c3e3e. 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/US39K2103906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49abc59af6c7b7317166e64dbdf735f70b59e943b9ab0abc3560c6cd6388168. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US39K2104004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b96f9bc732cd9a43507ecf2db5822b357389a183dda7e0c34152de2d2aec39. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US39K2104006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8712134087c99d3b2a4068d0c64e34095d5f7e0f097abf7b51bbb3b938817. 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/US39K2104203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a718b5c19ab31063ef9390c6ee83e294a604b7cb2295cf321c58a47a8dea93. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/US39K2104208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ca8d41e9bbfcf443435748231205da81f43fd27a73567092dbbdbf08cde20. 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/US39K2126809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f476765cd2b0d61af9150f4fdd4f7274fe053520ee77543a18abab11f01157. 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/US39K2126811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ba981a67b23995d43c27b1a2db6ac3a0c9a35f704ee33ed6afb9b769ab726. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US39K2126812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ce1219e8bb6c7c9eec8f09f3fc70e129842829271887902d3f9a5374c20477. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US39K2126813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec331f68bf6e34233f07687c1ad321e6d12665e4416d3fe4a15f7988e8ca74bc. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:59Z), 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/US39K2126824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50c77476196beaccf7c9696f5037305913cf2c41a49970ffe24c6b715338e72. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US39K2126704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d45a042b257fedf1a21b6d47c5664cf074893476b2841995e17957eb4bb90a2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:30:32Z), 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/US39K2126710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2e867c1b4f771164727c2fbd9ab5f5aa8675c948a73310348f979fb9dbed31. 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/US39K2127101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ba8352c2460c3e2e8cb156a4c6e38a2877e77d60976e53e809ca3d9e1f51d0. 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/US39K2127105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409ad527e61efc367d7055be6ba9cd48d060921665d6b4c0ff9d15f2c79df68. 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/US39K2127119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b785651e862463a95c4c6f18a7715e5ae63ef921030780127e0ae7248c6b4b. 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/US39K2127124.