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 0x0314b5320a5886bc1788396f3c24df61a3e59333330a082bc26293f2684c6528. 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/0b483c07-dc85-4c25-b84d-4ea06959518b.json and https://artists.proofprofile.net/proofs/artist/0b483c07-dc85-4c25-b84d-4ea06959518b.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 0x2159709d6e31a0edab66168a705b38e93015865adc7ff2e526e271200a5a972f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCACH1561702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d793d964ef29b54f018e7a499d77377b60d7d050f9de835c6f0d042139f59e. 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/TCACH1561704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23144cd411d0c885e142d9be419a2a9e4f51eac41bb71e6608dcf284e50e6dcc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:53Z), 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/TCACH1561706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5ad0ce2bc81b5caf9d965353b74bfee85ecf47f15c597c443a410107a2295. 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/TCACH1561707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac30648b3f93cfe247ec936c6246990922efd243283d3a4d0063c322fb2e307. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCACH1561709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4cd1156c81acf68bedb7b6205d2289a53bf5ece4bf7e645ded50cffb575d7. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAEF1929704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ae9f04627d138c178e347c346fa61de1e2602ce068444071391c561414714. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAEF1929711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ede6477e864e86665badf9143ac7e4ded1f095cfd661992f9b308d49a09810. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAEF1929712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5971f7b17b659c130950534ffe1349a7a79ba37fb1815d85817ad07d4071b04d. 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/TCAEF1929700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21750ec5b5b93502e0a4a1560eab03e0792755123b13816099d48c1b9f0015da. 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/TCAEF1929702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4cd1156c81acf68bedb7b6205d2289a53bf5ece4bf7e645ded50cffb575d7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCAEF1929704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02945c532466149038730982e8aaebdc54f19ac998d552498da962d4c46d1ad. 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/TCAEF1929705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ae9f04627d138c178e347c346fa61de1e2602ce068444071391c561414714. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAEF1929711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ede6477e864e86665badf9143ac7e4ded1f095cfd661992f9b308d49a09810. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:46Z), 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/TCAEF1929712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fdbf7875979dd0a58d258d6c0e29063969813d7596905db44d8397f012596c. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAEF1929714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbe69b8d45bc10cf2e6b22fb0d38fa0baf0ac634593d9a67aee7803041fa04c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCACH1561701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159709d6e31a0edab66168a705b38e93015865adc7ff2e526e271200a5a972f. 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/TCACH1561702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d793d964ef29b54f018e7a499d77377b60d7d050f9de835c6f0d042139f59e. 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/TCACH1561704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50d89dedff71639b1fed1a9988afef5b4413cfd3bfef1d7397036628874f49a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCACH1561705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23144cd411d0c885e142d9be419a2a9e4f51eac41bb71e6608dcf284e50e6dcc. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:14:41Z), 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/TCACH1561706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5ad0ce2bc81b5caf9d965353b74bfee85ecf47f15c597c443a410107a2295. 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/TCACH1561707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac30648b3f93cfe247ec936c6246990922efd243283d3a4d0063c322fb2e307. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCACH1561709.