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 0xf7ed293414ef7880562df54d232b666bffc569fabd531fcd644a8316d6ac9652. 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/a240d00e-ce21-4e17-8958-d54075d62d70.json and https://artists.proofprofile.net/proofs/artist/a240d00e-ce21-4e17-8958-d54075d62d70.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 0x20fbaebe69237c53fbea481d6c53c0c9ba3057849ccfcaf754a7d918a84a6b57. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFH2035701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9f38531d68dfbee561ec343103866af8ed7bc94477c9b577533cf304498a2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAFN2107372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca17806bac79980bffa4cedbbfe1eef75452870f61ac3f9cacd78963a18aaa0. 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/TCAFP2168300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb253802ed79faabb567e7b2982d8bd6e03654e075c4afccc238ab69e8c807. 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/TCAGC2288310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a15662cc83616fda47a2da8837052ff94a08032f27c4e97d3399199da1d26e. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:50:33Z), 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/TCAGR2202567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ba73c3811a4054daec2c1956ccde5de5fc878f1ad51927b69d936ddc6bdd43. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGT2376927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23a5dd56238c3e1d03b2376186dc440bbf683a9856c3aa3d271f69fc9b58c27. 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/TCAHB2352779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c468bb818071321717505336f5b574a1d18c40c7cd1fbe9d1e32ac11988ef6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAHL2381137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89da62ecc89261ed146b2f8e99756bad2976c3839e4ab39b8aaf2377b1d02f26. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:55Z), 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/TCAHP2395189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad194baaace854e245996a6cabd14bdf16b2e14fab7f7a1fc4b515ebc137a4. 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/TCAIQ2472213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e7d18b2430f7a6bd7590d601e411aa071a06eacc88ff3c5a3dec70494ad7a. 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/TCAIX2458884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22a015abff387782d0e9654e50cc4d484ca93d523cf1b0e81ef05f45ce394e. 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/TCAJC2418644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e73580b1c11185695f72f1d3e1b1b697e637424df6bf40b8b72bf182b14f3. 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/TCAJG2500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22a015abff387782d0e9654e50cc4d484ca93d523cf1b0e81ef05f45ce394e. 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/TCAJC2418644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1156da30abc127e6bf3e334d9b144048543ee14fe7495e9797c9bf364f064b4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJK2553420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e73580b1c11185695f72f1d3e1b1b697e637424df6bf40b8b72bf182b14f3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJG2500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22a015abff387782d0e9654e50cc4d484ca93d523cf1b0e81ef05f45ce394e. 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/TCAJC2418644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e7d18b2430f7a6bd7590d601e411aa071a06eacc88ff3c5a3dec70494ad7a. 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/TCAIX2458884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad194baaace854e245996a6cabd14bdf16b2e14fab7f7a1fc4b515ebc137a4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIQ2472213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9147283a814a681eb4d5ed752859a0e3c6516f909b972203c274c10d303164e. 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/TCAJR2562998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1156da30abc127e6bf3e334d9b144048543ee14fe7495e9797c9bf364f064b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJK2553420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22a015abff387782d0e9654e50cc4d484ca93d523cf1b0e81ef05f45ce394e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJC2418644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e7d18b2430f7a6bd7590d601e411aa071a06eacc88ff3c5a3dec70494ad7a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAIX2458884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad194baaace854e245996a6cabd14bdf16b2e14fab7f7a1fc4b515ebc137a4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIQ2472213.