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 0x554b3c491c5d4085d8801f29d1af9cdc30302c5c8b5ad2fa900d5b2121a1d532. 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/cea5a269-5bb4-461b-8c40-49634ce151ea.json and https://artists.proofprofile.net/proofs/artist/cea5a269-5bb4-461b-8c40-49634ce151ea.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 0xee10d39adbe692c2980d6adb11f9d548ebde7f70234da81aa516e91b8da90e88. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5161303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b14868c050b440068643e60f9f929a927dc64d235cae93aaa4187ac536c64. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:52:47Z), 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/ES5161201782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0dca848430e2ca305c9aca5e60a204ccdcdd9d46eb2bdda26d71219122e98. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:19:31Z), 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/USCHR1327168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0725ea89432881c290cf26d681c35971e5a57d73b5bf93ec6573c4eb6e362c. 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/USCHR1327169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401544fcd118b541302f433e91f3ffb5a90d9003974b6fc846336d45a52ec1a9. 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/USCHR1327170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf234751f3414de5be8260f8e085bca5e61d1075c5c729b5d9404767f665e6a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:46Z), 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/USCHR1327173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ec5b618e41fbf179feb53a8ea2e11fbec26d67d038d4cd0f8576177caab54a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:36Z), 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/USCHR1327033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba048406d61f0d96459ab1be6bd35132d9bdfab87b07e56baa64a1bf9b76974. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCHR1327036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda8d4ebb396b0c8996db9d49dcf942ffcb44257a73f6a9292cc5ba9cbfbb28d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USCHR1327037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f19f178285557274cadf0bf45c197c6692bd9df49a64e1a5d54da01674e61fc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCHR1327040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f38b6cc936390c20a2bbd968b215f052a003374f30bc5599e0820024faea2. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USCHR1327042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbdf6539903061cd42db1feeb8deb5e7676b36e600f6f521a2b1c4bcb02e121. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USCHR1327057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adfb8d208546ecf5edd9725059f902cd1eddb06d89a695c94be64b0cf426a82. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCHR1327058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881963276bb0ccc2e2e04eeb872ab7fa9be948cea0415bce4643dd7eb6533863. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/USCHR1327059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9655de3bcb1d52075478e792a0c9baf4644828ca56114005f77ba4fc1a7ac569. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USCHR1327062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7756af6506233ecc6e53c92c0b8c335ffd5707ce801dee4ec3d57490e9b9ea. 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/ES6670801341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3b73371663bce92ce152fcddfbf9f03f6ac15d06ef1f8fd80ccb44728cd00. 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/ES6670801343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6910b4de7131a7546eeb7e318fcba905d65d4a247b2c2fd20eda018d1760b5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:59:57Z), 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/ES6670801350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf138af7201ce0befc85d115570f3544c50ff8e283be38382802f1646de4d68. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES6679802055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dee6d104d12133b07c99989166600763766ee1f87c7b272736d75adb0026f6. 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/ES5301252603.
Andalucia Canta y Baila al Son de la Rumba Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a91f9de5644fcbc4929630ced1e72ea9604fb59fcd01d90dcd5c1189f5fc910. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5161604362.