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 0x03d3a74c4f04dcc3379f297fbea3e237f92b0797af7386e81304def9330bb325. 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/56767dcf-c1ab-4065-9635-afcf9a412356.json and https://artists.proofprofile.net/proofs/artist/56767dcf-c1ab-4065-9635-afcf9a412356.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 0xe3bda73eb3e49b04b812f5c3719e82832c474f4f995804417b3ccac1b39e6f34. 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/SE5BU2264952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81c0abde6112f565f973e7ef40a382ba101056f77658c9df10a824dad22ef55. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:44:16Z), 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/SE5BU2264954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2b031c6495e0b3d7c982cf9e2ebe2a04a54884ba1348c6227be559eb8a86b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE5BU2264959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03eb7af433f7c9e15c37a51bb73178bb7bc35118c6e5d546de9a850b1a3386b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5BU2264962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b3a6139d8ef629b6053eebdd6dc393c651c6707c1f9a7ac9666354a2acdc1. 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/SE5BU2264964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb281c6c216d29d2203536230eb1db4c985d6aee050eacc7c7e5685e626185078. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SE5BU2264970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6546eff9df5026dee0769b8f178050f23b3b19fa6229a4f015cc2244986944. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5BU2265113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ccdd7281642b2a91d33e95187b9302ee286a92e51d7257620353635b428551. 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/SE5BU2265235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654b0d4b783bad2ea7ca6562716d4d09808561204bf1ab2d8241e3538b8745ef. 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/SE5BU2265244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dc7ae6a0c062f0e92d3819e40b55edaa0acc41133afa3d937e3d27fc24cca7. 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/SE5BU2265588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ab937782e4e20fa2100db7307100a8521230ff5bb184e634d6315b87f1084. 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/SE5BU2265775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a93a24678c6d76e6043c3ecae43d38bb35cb8a05b4d7d3b5dd90347eb217a3c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:33Z), 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/SE5BU2375566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c71f525aeaa0074e8f19f0b092f5bf00c33d6a544851ffb8fd7bb302e4c4c1a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE5BU2375567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16601aaadd1e9afc2546c1d3111a1c9dfe25da25361ce64bf412c6b4c6e0ffbb. 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/SE6I32455248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff55d407c6ddb1f917b7d6ebb4b4ab4bf84d7fccba990a7c8c910a97b0c0b52. 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/SE6I32454059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc06fe04495189a797a89b0c3631add9db207f28f638df177b2112f7968a0fff. 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/SE6I32454065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca683c1124ac8f2e5a90ca4d4eb117a2c16be50f8fb52e33d9bff6a8e9adfbce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6I32453402.