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 0x638af6ba88d8e1d74fc77fba5cb8d17c63f57160f58566a69c7f03db0a9e0e26. 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/c7ecbb12-9c7b-44de-be36-19c8acbf9647.json and https://artists.proofprofile.net/proofs/artist/c7ecbb12-9c7b-44de-be36-19c8acbf9647.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 0x3d11d56ee65a1914996142245c41d11d281b2181ae8a4eacabbf890944cca055. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:14Z), 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/BGA411103014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877662f5f323a2e3c9edbae4d5638722a89facfe9b8a94e110e5f43622b48d7c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:16Z), 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/BGA411301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95e35d9c23421d5210ce82180f3ae06d8cfa95a8ad98ddb5dbd89f81471b3d. 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/BGZ411801876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ba9573b512ad4300152a69170f2dcd7de605767756940be93efb05e22facc9. 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/BGA411301019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb913e64e58de201d9c28761725ed5329288e8fb0e52a9327296136426043e181. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:49:55Z), 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/BGA411201042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaac6efe44a7a820a3e6f87c760487d27b1b562f32b6bc636649d9a415f7599. 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/BGA411103034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f3e186432dc484b88b313c2cd03dc05e77af64962b7fc63b4ecb75e6b0c44. 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/BGZ411801883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4647300bf0b149e821b5c6ff973b4fd47c2ac3de9fd8f51a83d791801b854. 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/BGZ411801860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727442391b9447fdfe5ac483bb549d45d5feed6d51f436da32f1ebeb8343b9ad. 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/BGZ411800996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ff794c71b826465c702eac5874723613c059221f85536d3c919482eec6258e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BGZ411800998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb04c36d52fcd385dd64ae37232b29df0b323218368a1eaac4a10ebf39fc32f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BGZ411800999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284acb073d99b24733aa31b53632f056d2461434832c1588998d44bce7f86f8. 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/BGZ411800995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727442391b9447fdfe5ac483bb549d45d5feed6d51f436da32f1ebeb8343b9ad. 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/BGZ411800996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319ff633ea739c85656cb9c342d3029d7a89dd942d8efa6d613fda709956400. 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/BGZ411800997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa76f5729d078a9bfbaff0750e1be6189f8a55281d49f83806905acbdc9ebe. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGZ411801001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdfa851a7743ae0ed05b58d80a8fea7e036b01b91fbd27eacb02563642ab870. 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/BGZ411800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56281e8a284480c52be86d0f2754d169ea6b13c065672cf56384a9a878f3fec2. 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/BGZ411800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdfa851a7743ae0ed05b58d80a8fea7e036b01b91fbd27eacb02563642ab870. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:06:55Z), 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/BGZ411800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f827aaf33e7cd4786dcd8cb8d04653f3b7976c83626ffb37fc8d3562bdf20b6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BGZ411800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f25e2ec24909f26aba2e41946224cd90b221847734f57a18d5c80b4947038b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/BGZ411800321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd0cf083c02f5a802849f95253bb4c08f38673d7b0b856ee1fce8bf2914fa81. 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/BGZ411800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838d8d81defd170ae99d80fb18b1c97de58cd0930db3dbc552e6c7b29f9fd95e. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/BGA412100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f827aaf33e7cd4786dcd8cb8d04653f3b7976c83626ffb37fc8d3562bdf20b6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:37Z), 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/BGZ411800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909a3ff514907a9e5ff4cbefe27f6cfca8739fb55825e58c01eaef0cd202798d. 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/BGA412000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89ff6a73481ae3a028f36c04f43fe1dec6c95798ef06cc7609f68dad5f591da. 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/BGA412400062.