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 0x3abf9766c4a6122779358777d7455f8009501962b7badeb551fb0283c1433511. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f74868d9-f1e5-430e-a739-23146b46f947.json and https://artists.proofprofile.net/proofs/artist/f74868d9-f1e5-430e-a739-23146b46f947.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 0x9416422059656fd673a80e009066ee63636f3941ee34549994bce179c11542ca. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:37Z), 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/TCAEG1959685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5bf188200f95c234b8cd3893f7d37420eec2e07dd3620c287200b23e98066a. 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/TCAEI1967372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8150fc46b2b635c06a72e68c10c909bd7100996ac0dd3b57a21b04836e733a36. 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/TCAEK1939887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907bb246749f5721b1ba025c70f85d673fc0c670186c6c88c7a2c96e6331534f. 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/TCAEL1934495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f3bc6fa2575c7e85d80b758487366917839caf344526df97aae37d454e512. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAEL1953306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b7d901f52492da0ccfc81f8a423f8c2a2d87f16131810c391142d7a789790. 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/TCAEL1966126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad6d471cc891e56860ee4ee9d803f5541761fa8597ad77fc35e431bc1754580. 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/TCAEQ2005104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2fadf64b9c0e8b94caa7e5c4feedf622e7b589d984137753cf49b7b32eda12. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAEQ2005106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe9b8ec50960c8f5e2fadd8c8b80acf132322718d13eda601172aeab6439dd0. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAEQ2005109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba3ff423efc277067bce41d770f9a62471103d5f3cbc6f13a79e584203eb78. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAEQ2005115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c372fb205537400ebdbf8a2619a24f3096e7f6c750533da6090f3caa6a7e39. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:35Z), 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/TCAEQ2005122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db148b955525bc259fd3b6104f005631aff6505c608e21de6e3a85609195033. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAEQ2005181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a30a4da7f09e06685544be90e2735a3f9f261ef593398fbfbd9099f9bca165f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEQ2005186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b5782ada2f074ee00c9819b84a78e5f567accfbf8bb28173db98470325d264. 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/TCAEU2028366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294376eee35be4838ea0d6d3df18547d3099846b0ef60af2da6b7a078b3a542b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAFO2153431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c60649721a6de726d6b983945407e442e8b3324c71f0e9cbdbb8742d668dd0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAFQ2116983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97913d76588e6a06f2f02a5db6c1915cd4ea44a83e3e11c799cece5bf7a48e85. 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/TCAGE2231441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78e41c40e0e6cff2368624c13d48b13bc259ecf4a5d6c1206c321a7e9b434b. 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/TCAGO2223410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e8f3fd2d33bae357792d4d14300a752b0b54f490e4e0e4d30a5a4ac857a35. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAGP2210638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e15ece6d3139834b0b16294fc9d28213e59d53d9e0e470965f6a8f2372f35. 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/TCAHC2334876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0819a3e50009344adcd8490e17c37ac503268f2d270647318dc91d8712cf2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:16Z), 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/TCAIK2482818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfc43915ff827facfe5ebd47db998ece5183141be6665ed1caea6a759e25258. 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/TCAIU2416191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8753daf3b4cd810c5f236777130b95f0dd2dc55df582e8a346ca2af4c79db9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAIZ2471196.