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 0x15614c0b5fe1ce17f696ad2776addea60147e3d87ca3bf42b51e7531e3a2add9. 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/e2aea54b-5ded-4ede-b190-257bb574004f.json and https://artists.proofprofile.net/proofs/artist/e2aea54b-5ded-4ede-b190-257bb574004f.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 0xaa5260b6b84998c9a7ee9eb9f3418241228beb2bcb8cfc5706ccf31ed263108a. 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/SEYIJ1700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab907a8b8adf3e21d2e81c684dd0cdc1313b6ac7e26caec54ff405ca08a305c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:33Z), 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/SEYIJ1700903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932507286318e881942697edb69b01ab1e31cbab6a60dad1580b25e40c460f4b. 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/SEYIJ1700904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4607f49ba6eebe4ce9de1cf1fdea5d012c7b3931ae6a71eaec88dd6d7b15fe2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:02Z), 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/SEYIJ1700906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7546728d377b706b417aa8b9ba241f467b6284ac19c51c779e0faba00d807c78. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:45Z), 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/SEYIJ1900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2af095097843eb9db553fb37494272001a86f51714fe05e23338e7db9af1ec. 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/SEYIJ1900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda01519e62bf2adf38f17016b2f8a0bbf6de8102c6703701c1e631e0109ef0b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SEYIJ1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bcce5160eaba037b6cebfe2f1dd023c89d82c5dc733be6715ae2feacb56afa. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:33Z), 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/SEYIJ1900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf4f32ce4dc951f1b9eb1616c3e23b3483c0a1419831097b22bbac305896850. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEYIJ1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82190a0b53340a0b84c6ee48472648b385c18d71dc2973ff03549d3bae09a4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SEYIJ1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ba667ba245dde5cffb82cac45b50073e7772dc4ba9710d6d2b0b057afe2c2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SEYIJ2100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2f5296e103821b2acaea146cd3b4d726f08d3bf14c071ce0f4e54620c79ac4. 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/SEYIJ2100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8fc8fcad9b83e279475c11a6b570acd253c851ae0a617b587ec7b0a14bea6b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYIJ2400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0304a19cae5bd7dab27dd5547d89adb7e214b615d4faab2be866af12b9d2b84d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:31Z), 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/SEYIJ2400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4461fe059123b3f688e2a5c1fd9b461877a136c16bedfbf21250cef3471703ba. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SEYIJ2400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a3515d7011f1e8861aec50271e5d043b8ea9d839e2773df8e45434ee551655. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYIJ2400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f9debefff61ca9c3bcb01e7efc58bcec2be9f082d0bfb488da0a8099521c3b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYIJ2400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c932cd579ebdb285de8008b96d3dbc9a34158339baf01a7b985f6f7e7747e8b. 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/SEYIJ2400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271404a9300d824053c6199172f79091bdeef01e97a4b23d01e517ad1910d35a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SEYIJ2400709.