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 0x1ad0b37e117d1b32f9e5d38bd1f2f82ab1a107027cdfa4966d19541fdefca559. 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/2336ea71-e4da-4c3c-87da-c5e9f4aed916.json and https://artists.proofprofile.net/proofs/artist/2336ea71-e4da-4c3c-87da-c5e9f4aed916.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 0x5c0e1fd3ea13cb51d8d1963a44fdad9ec3d7eefe14ce811bc29efad5925882b0. 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/SE39E1300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963c6de54a941e013e0c5bcb71b1679ba0888742ba71a8738086ac62c5ed37b. 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/SE39E1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708db91d01b15af1a697931aade7d9aa44aaab4e1bf236fb52b18fd6e00c612. 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/SE39E1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b51a62d3229023fb83fb2a2926cf3f777d368d70e012a9f47a4d2f91cae97b7. 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/SE39E1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee49a0a13be25ed5ba05ac157b1914d12284c8dd51e0e81d45639e99edf104f3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SE39E1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fdf5406438ef213562ad7e47d1bcd1d73744c197d5933127bff04a1d30a9c7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE39E1300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ceb172580d4540d8d90ca57cfb116aeb989d32865a1a2bf094f0a66755b215. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE39E1300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4799818b8ece804ad28ac65fa749a10c90db9fbde92b97ad793ee7183a01c2a5. 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/SE39E1300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc4c912de0069dc606fc75e1392cafe57c700a17782bf3986777c66fe1c7473. 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/SE39E1300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c53aff5f66c9cf46442fe79e749eff96cd3b1716d11c7fbefae3d98879bbe6c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SE39E1300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1442384f67a54c380f68f98250b0d3677b98def35dfb0923bde2fc216fa5813d. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/SE39E1300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b941e4ca610db125e6d8bd3ad9ca57358178bd95d7903942da8c05ebf43c368. 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/SE39E1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e85f5d8fcc51e3ba9c41541bc333192e3fba0c3cd5aa9568ee40ad3d9b0be15. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/SE39E1400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b6444cf3ee61a74f7bd4ee152e11ce5ece1847f45c0e9c67860e6e15f72af7. 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/SE39E1400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8e48292aa8a8e1db91f9de48a4725168cdd3a4b6d57d1507d78b5d6ebd4ee3. 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/SE39E1400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28be6b7af9201991d77958129bb7bf0abac59dcfb628a2eab4d96bc7d931bb6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE39E2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d37196c9691f6d061a7716b593235d8d1016f1f5b29fbf765287811043fe18. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/SE39E2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f21412158b2e09256b3b65f87492711523d674c242b1be97a0dd59be2cec65. 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/SE39E2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1b80477989b73f9a86be826153cd88fff24a938b5da8607ddd7c910a6a57b. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/SE39E2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dec2d3f14dfb9ac67248ffa44dbc64b3440f4bba323bfa4b6b72f2eaa27a611. 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/SE39E2200106.
En Trumpet, En Klarinett & En Gammaldags Bas (Jazz Me Blues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727542ac29da4bbc7a6554799f42a0dabc3f633d25f69a30ac27395a8eac4fe7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE39E2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf550012d8c9746c1dc619f1f3a00583722600be47d4a1df676809146e478688d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SE39E2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc9a48763501f9504207488575c8909717ffed17df18be2742a7d99d4fb475. 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/SE39E2200110.
You'll Never Walk Alone/Climb Every Mountain Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4963fe1a2e01de50631cef4deb143c3984f52f3a860159608d13a5fbbfe87. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE39E2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e65fb26353302fee5b69cdf3aeb2ce3980c05f7b5f60a59240b318262f5b7b. 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/US29H1100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e94d54528e30d1631108bbb88cf1bb2ea76c7eceefa81a144e697de4390b0f3. 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/QZ7WF1900007.