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 0x6086d1def8f701b16ebfa440ad8171c4f496c2043d10dff93c93d5cc356af50f. 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/2bdf0454-288a-4dc4-b09a-091f99b4ff53.json and https://artists.proofprofile.net/proofs/artist/2bdf0454-288a-4dc4-b09a-091f99b4ff53.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 0x4e99931753947782293f6ddafa86e79402fa42dbc43d132e942a87d72fe6fe2b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:00Z), 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/UKR6V2112560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358267f8fe6361e1b474c8e749a1c89a1f3a42297f588ed2aa65df9fa4d55806. 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/UKR6V2116523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef552c713ae61724e172ed11e8a54d10e065604d19f98022dcc418d9605f467. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA62153457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128efb350d99f55de6baded6a37799400fb7956e1179a0929857e3e4b0f62e08. 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/QMDA72189798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6af8ab74f7ac2f59bf79a748f4c8d59b3fb53f19af3dc13d50940b19aec73e6. 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/QM6N22240216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee143a904f309a459266d737850ca7846845a5afcbd21bfbed0546054d21f90. 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/UKR6V2212535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a8a6808b670dfeb3f2c61e54c0a08e4c298ccd49af9642a261ac187db8522d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/AUKDT2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eb62aac38997323ce7fae743c0654cffec6d34c3a50bf5303bebebfe5d72fb. 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/AUKDT2300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda5cc4fa8fcec25f5c18b178e0521df89a16555db39544e5b4fdb0988f2cadd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AUKDT2300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcfc30d4a2578c4d1724db51a7f04b013ebc83cb23ee907728ef2ffe88c503e. 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/AUKDT2300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4879a20b5fdd98a74441e49f4e9c80414e230e825867f04de28abd4c552076f. 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/AUKDT2400627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a27386579dc2fb1a8f911b3fc10aa8e4bae6860fd5b5dd8b1f549be0a5eb18f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTLA2466896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a27386579dc2fb1a8f911b3fc10aa8e4bae6860fd5b5dd8b1f549be0a5eb18f. 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/QZTLA2466896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef187818fe9fe7b7dd6d4662f9a43c46c2b7e5595af0c17082ca21c72932a85. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/UKZGC2410050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72644ebaacdee6d98beadeff539db9c270e7cd17553e87f2680a13e8fcc95d7. 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/USCGH2514409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55d545226067704d3ca38b8c32c5acdd180c4830babbe7be1b13ec0b1b52f3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:22Z), 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/USCGJ2506512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71236d846b1a0c05148de2d8a67e047f3dd32a3e81f9391e1d85b48133433635. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUKDT2502153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453406b1f2e88ecc5ee1aec62d0536bd858c45c015d05346f3932f4833ea6b7c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUKDT2504204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b5a5cbd7e978279ff55af88bacc292da9d1044278344c3bb5f1057d45c396. 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/AUKDT2400626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eb62aac38997323ce7fae743c0654cffec6d34c3a50bf5303bebebfe5d72fb. 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/AUKDT2300165.