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 0xc58b902ad267138a4212bdfd0acc6617ec07c00251fb3faddcd8f79d068c0c0a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05cc4b19-c508-4518-b1ee-dc1bf62b7baf.json and https://artists.proofprofile.net/proofs/artist/05cc4b19-c508-4518-b1ee-dc1bf62b7baf.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 0x8867fc47987cd2142afac4817117887af0d74f389652d7ae04d01d44e27413e6. 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/GBKQU1524080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f216ab1c4d22e4c795216f64a3c63271682714837b404e0834a4e37c4e3f9b. 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/GBKQU1932648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f3e713af365d702d068f6d3f72e1d6d8406ea6cf59e0a5d18bda5ee71aee18. 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/GBLV62028354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2554855aecd148d511863fb16d6331e5fc04d5af452029827c085628df6ca8df. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES50A2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de02ecb506315d9db730644862b0ecd37053d4b21bfd5ecc0c30f9ce7c50ad8. 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/US83Z2238895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e1d7e10962d6030c08b79e29fa3954218ac9fa67c596efc0a5ada7c45f8178. 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/US83Z2330122.
Мы говорим на разных языках (Бальмонт International)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0029724cfe8b6d766986f9e20d3d0e9807cfc1c457b793849e98bb3347a1bfae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA492403550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c01429b6c8aa89de518146ed6f47112d7695b45ba1e61355f6302321d078e. 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/AEA2Z2518531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a062af3e7e886c05880d3c9883a94356441fb2fb88ee0640d9b82b2743be74. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:30Z), 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/AEA2W2536851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f86e20f32d4ef3f09af9810689a6e02fe5f8e54476bbfc2eeb282752682dd8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US83Z2524569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce59b5c3b4f37143b68223293bf6c02c378434debb6cd26a32c46a9668279d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:22Z), 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/RUA492505439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c62a78fd068c4e2a3e3a2342266be40f5f66f9b7e4c5aa43c52965fa722e7b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:45Z), 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/AEA2W2539120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607f1fb2805da962cba8685e94b99ddf0264109a6a8240df41d8f36e12b7d401. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:27Z), 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/US83Z2516365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817c2f0b1b7f05a2dd055f8ba43842fc985aa99511e02868a6655c3d0a7c0d11. 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/US83Z2502949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe8a2c185473a0dbe26b7bd1921d23e1ef462184f7116907d9b703c4ddf3b83. 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/US83Z2345927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749e50a53fbb2bc240d7389b011303146fe633fa880bab0b7d8630001d0626fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US83Z2207580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ffc9aef3c0231419f99e55e853aaabc71fdcc1bbe2758fb5115b4e7f5a5c3. 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/US83Z2123291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45594b863592fae5f880ac6e6b0678693d88ae8a486f31e880247d8ea91953a9. 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/US83Z2502950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ef0812b8f6725118b567a329bcd164b7a80f0dd9199b0827edaae90ef7f84. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US83Z2110853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c8d25edc180f0dcb2c97142b33174d63ffd91053eb4ace8cb6921aa40f8393. 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/US83Z2238507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35eedfbdc4f02ea34427cd4ebe22147e3e794f70e439759a73f7bc6e1276068. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:32Z), 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/US83Z2238503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21754949275ee6e70ea928a8f9e6a74a2619be9e27ed7e10efe896514fc235. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA232501199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d03802bf604b7c0f4285b14d5a18c0da00cad0beb7a7d912e8650036378145. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:56Z), 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/US83Z2548026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ab4217fe30a0d8a525f2463982fa569ad27b45eef8f03e00ff4abb817cf64. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/US83Z2557849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abcadc7232de9bc2c6396618b5acbdfbd2249cba50ffdebc1a046c5f4573440. 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/US83Z2557942.